A Synopsis of Sphagnum

Sphagnaceae, Bryophyta — 300 accepted species

Sphagnum L., Sp. Pl. 2: 1106. 1753. (Linnaeus 1753; Shaw et al. 2010)
- =Isocladus Lindb., Öfvers. Kongl. Vetensk.-Akad. Förh. 19: 133. 1862. (Lindberg 1862)
- =Sphagnopsis Trevis., Atti Soc. Ital. Sci. Nat. 19: 478. 1876, nom. illeg. (Trevisan de Saint-Léon 1876)
Sphagnum aciphyllum Müll. Hal., Flora 70: 419. 1887. (Müller 1887; Costa 2018)
- =Sphagnum uleanum Müll. Hal., Flora 70: 416. 1887. (Müller 1887; Costa 2018)
- =Sphagnum oxyphyllum Warnst., Hedwigia 29: 192. 1890. (Costa 2018)
- =Sphagnum itatiaiae Müll. Hal. & Warnst., Hedwigia 36: 146. 1897. (Costa 2018)
- =Sphagnum laceratum Müll. Hal. & Warnst., Hedwigia 36: 149. 1897. (Costa 2021)
- =Sphagnum cucullatum Warnst., Bot. Centralbl. 76: 417. 1898. (Costa 2018)
- =Sphagnum mosenii Warnst., Beih. Bot. Centralbl., Abt. 2, 20: 128. 1906. (Costa & Fares 2012)
- =Sphagnum weberbaueri Warnst., Hedwigia 47: 106. 1907. (Wijk et al. 1967)
- =Sphagnum itatiaiae var. purpurascens Warnst., Pflanzenr. 51: 105. 1911. (Warnstorf 1911)
- =Sphagnum itatiaiae var. roseum Warnst., Pflanzenr. 51: 105. 1911. (Warnstorf 1911)
- =Sphagnum itatiaiae var. versicolor Warnst., Pflanzenr. 51: 105. 1911. (Warnstorf 1911; Crum 1993b)
- =Sphagnum itatiaiae var. viride Warnst., Pflanzenr. 51: 105. 1911. (Warnstorf 1911)
- =Sphagnum aciphyllum var. pallescens Warnst., Pflanzenr. 51: 108. 1911. (Warnstorf 1911)
- =Sphagnum aciphyllum var. purpurascens Warnst., Pflanzenr. 51: 108. 1911. (Warnstorf 1911)
- =Sphagnum aciphyllum var. versicolor Warnst., Pflanzenr. 51: 108. 1911. (Warnstorf 1911)
- =Sphagnum aciphyllum var. viride Warnst., Pflanzenr. 51: 108. 1911. (Warnstorf 1911)
- =Sphagnum pendulirameum H.A. Crum, J. Hattori Bot. Lab. 63: 93. 1987. (Crum 1987b; Costa & Fares 2012)
- =Sphagnum triporosum H.A. Crum, Fragm. Florist. Geobot. 40: 173. 1995. (Crum 1995b; Costa 2018)
Sphagnum acutifolioides Warnst., Hedwigia 29: 192. 1890. (Warnstorf 1890c; Michaelis 2019)
Sphagnum acutirameum H.A. Crum, Bryologist 95: 423. 1992. (Crum 1992b; Costa 2021)
Sphagnum aequalipunctatum H.A. Crum, Bryologist 98: 589. 1995. (Crum 1995d; Costa 2021)

Replaced synonym: Sphagnum aequiporosum H.A. Crum, J. Hattori Bot. Lab. 77: 235. 1994, nom. illeg. (Crum 1994a)
Sphagnum aequiporosum Warnst., Hedwigia 57: 75. 1915. (Warnstorf 1915; Michaelis 2019)
Sphagnum affine Renauld & Cardot, Rev. Bryol. 12: 44. 1885. (Renauld & Cardot 1885; Hodgetts et al. 2020)

≡Sphagnum cymbifolium subsp. affine (Renauld & Cardot) Cardot, Bull. Soc. Roy. Bot. Belgique 26(1): 44. 1887. ≡Sphagnum imbricatum var. affine (Renauld & Cardot) Warnst., Hedwigia 28: 370. 1889. ≡Sphagnum austinii var. affine (Renauld & Cardot) Röll, Hedwigia 36: 55. 1897. ≡Sphagnum palustre var. affine (Renauld & Cardot) Bott., Atti Reale Accad. Lincei, Mem. Cl. Sci. Fis., ser. 5, 13(1): 74. 1919. ≡Sphagnum imbricatum subsp. affine (Renauld & Cardot) Flatberg, Kongel. Norske Vidensk. Selsk. Skr. (Trondheim) 1984(3): 46. 1984. (Flatberg 1984)
- =Sphagnum cymbifolium f. congestum Warnst., Eur. Torfm. (Warnstorf): 140. 1881, nom. illeg. ≡Sphagnum austinii var. congestum Warnst., Flora 67: 600. 1884. (Flatberg 1984) ≡Sphagnum cymbifolium var. congestum (Warnst.) Cardot, Bull. Soc. Roy. Bot. Belgique 25(1): 55, 109. 1886, nom. illeg. ≡Sphagnum imbricatum var. congestum (Warnst.) Cardot, Bull. Soc. Hist. Nat. Autun 10: 312 [Répert. Sphagnol. 80]. 1897. (Cardot 1897) ≡Sphagnum imbricatum f. congestum (Warnst.) Warnst., Pflanzenr. 51: 443. 1911.
- =Sphagnum cymbifolium f. roemeri Warnst., Eur. Torfm. (Warnstorf): 141. 1881. ≡Sphagnum austinii var. roemeri (Warnst.) Warnst., Flora 67: 600. 1884. (Flatberg 1984) ≡Sphagnum cymbifolium var. roemeri (Warnst.) Cardot, Bull. Soc. Roy. Bot. Belgique 25(1): 54, 109. 1886. ≡Sphagnum imbricatum var. roemeri (Warnst.) C.E.O. Jensen, Festskr. Bot. Foren. Kjøbenhavn: 68. 1890.
- =Sphagnum austinii var. flagellare Schlieph. ex Röll, Abh. Thüring. Bot. Vereins "Irmischia" 3: 30. 1884. ≡Sphagnum imbricatum var. flagellare (Schlieph. ex Röll) Cardot, Bull. Soc. Hist. Nat. Autun 10: 312 [Répert. Sphagnol. 80]. 1897. (Cardot 1897) ≡Sphagnum affine var. flagellare (Schlieph. ex Röll) L. Söderstr. & Hedenäs, Ann. Bot. Fenn. 29: 121. 1992. (Söderström et al. 1992; Hodgetts et al. 2020)
- =Sphagnum imbricatum var. laeve Warnst., Hedwigia 28: 370. 1889. (McQueen & Andrus 2007)
- =Sphagnum degenerans Warnst., Bot. Centralbl. 42: 102. 1890. (Flatberg 1984) ≡Sphagnum imbricatum f. degenerans (Warnst.) Warnst., Krypt.-Fl. Brandenburg, Leber- & Torfm.: 325. 1903.
- =Sphagnum degenerans var. immersum Warnst., Bot. Centralbl. 42: 102. 1890, nom. illeg. (Wijk et al. 1967)
- =Sphagnum turfaceum Warnst., Schriften Naturf. Ges. Danzig 9(2): 161, 165. 1896. (Michaelis 2019) ≡Sphagnum klinggraeffii var. squarrosulum Röll, Hedwigia 46: 244. 1907.
Sphagnum africanum Welw. & Duby, Mém. Soc. Phys. Genève 21: 216. 1872. (Duby 1872; Michaelis 2019)
- =Sphagnum rehmannii Warnst., Hedwigia 30: 16. 1891. (Eddy 1985)
- =Sphagnum transvaaliense Müll. Hal. ex Warnst., Hedwigia 30: 32. 1891. (Eddy 1985)
- =Sphagnum angolense Warnst., Bull. Herb. Boissier, sér. 2, 1: 1086. 1901. (Eddy 1985)
Sphagnum alaskense R.E. Andrus & Janssens, Bryologist 106: 435. 2003. (Andrus & Janssens 2003; Michaelis 2019)
Sphagnum alegrense Warnst., Hedwigia 47: 83. 1907. (Warnstorf 1907; Costa 2021)
- =Sphagnum bahiense var. sincorae Warnst., Pflanzenr. 51: 503. 1911. (Warnstorf 1911; Michaelis 2019)
Sphagnum amazonense H.A. Crum, Novon 12: 444. 2002. (Crum 2002; Michaelis 2019)
Sphagnum amazonicum H.A. Crum & W.R. Buck, Brittonia 44: 449. 1992. (Crum & Buck 1992; Costa 2021)
Sphagnum amoenoides H.A. Crum, Contr. Univ. Michigan Herb.: 147. 1997. (Crum 1997a; Costa 2021)
Sphagnum amoenum Warnst., Bot. Jahrb. Syst. 27: 252. 1899. (Costa 2021)
Sphagnum andersonianum R.E. Andrus, Bryologist 83: 60. 1980. (Andrus 1980b; McQueen & Andrus 2007)
Sphagnum andrusii (H.A. Crum) Flatberg, Lindbergia 30: 103. 2005. (Flatberg 2005b; Michaelis 2019)

Basionym: Sphagnum subsecundum var. andrusii H.A. Crum, N. Amer. Fl., ser. 2, 11: 62. 1984. (Crum 1984b)
Sphagnum angermanicum Melin, Svensk Bot. Tidskr. 13(1): 21. 1919. (Hodgetts et al. 2020)

≡Sphagnum nemoreum var. angermanicum (Melin) Rønning, Acta Boreal., A. 14: 19. 1958.
- =Sphagnum molle f. formosum Warnst., Sphagnol. Univ.: 132. 1911. (Michaelis 2019)
- =Sphagnum americanum Warnst. ex H.K.G. Paul, Biblioth. Bot. 88: 3. 1920. (Herzog 1921; Isoviita 1966)
- =Sphagnum paulianum H.A. Crum, Contr. Univ. Michigan Herb. 23: 114. 2001, nom. illeg. (Crum 2001; Isoviita 1966)
Sphagnum angustifolium (Russow) C.E.O. Jensen, Bih. Kongl. Svenska Vetensk.-Akad. Handl. 16 Afd. 3(9): 9, 46. 1891. (Tolf 1891; Hodgetts et al. 2020)

Basionym: Sphagnum recurvum subsp. angustifolium Russow, Sitzungsber. Naturf.-Ges. Univ. Dorpat 9: 99, 112. 1890.

≡Sphagnum recurvum var. angustifolium (Russow) Warnst., Nyt Mag. Naturvidensk. 31(3): 213. 1889. ≡Sphagnum brevifolium var. angustifolium (Russow) Röll, Hedwigia 51: 103. 1911. ≡Sphagnum fallax var. angustifolium (Russow) Nyholm, Ill. Moss Fl. Fennoscandia. II. Musci: 747. 1969. (Nyholm 1969)
- =Sphagnum recurvum var. tenue H. Klinggr., Schriften Königl. Phys.-Ökon. Ges. Königsberg 13: 5. 1872. (Michaelis 2019) ≡Sphagnum intermedium var. tenue (H. Klinggr.) Husn., Sphagnol. Eur.: 14. 1882. ≡Sphagnum variabile var. tenue (H. Klinggr.) Warnst., Sphagnoth. Eur. 3: no. 112. 1883. ≡Sphagnum cuspidatum var. tenue (H. Klinggr.) Hérib., Mém. Acad. Sci. Clermont-Ferrand, sér. 2, 14: 448. 1899. ≡Sphagnum parvifolium var. tenue (H. Klinggr.) Warnst., Verh. Bot. Vereins Prov. Brandenburg 41: 220. 1900. ≡Sphagnum brevifolium var. tenue (H. Klinggr.) Röll, Hedwigia 42(Beibl.): 26. 1903. ≡Sphagnum apiculatum var. tenue (H. Klinggr.) C.E.O. Jensen, Danmarks Mosser 1: 270. 1915. ≡Sphagnum flexuosum var. tenue (H. Klinggr.) Pilous, Fl. ČSSR, C, Bryol. 1: 285. 1971. (Pilous 1971)
- =Sphagnum variabile f. squamosum Ångstr., Eur. Torfm. (Warnstorf): 67. 1881. ≡Sphagnum recurvum var. squamosum (Ångstr.) Warnst., Flora 67: 608. 1884. ≡Sphagnum brevifolium var. squamosum (Ångstr.) Röll, Hedwigia 42(Beibl.): 26. 1903. ≡Sphagnum angustifolium var. squamosum (Ångstr.) C.E.O. Jensen, Danmarks Mosser 1: 271. 1915. (Jensen 1915)
- =Sphagnum intermedium var. rubricaule Warnst., Sphagnol. Eur.: 14. 1882. ≡Sphagnum recurvum var. rubricaule (Warnst.) Cardot, Bull. Soc. Roy. Bot. Belgique 22(2): 67. 1886. (Warnstorf 1911)
- =Sphagnum recurvum var. parvifolium Sendtn. ex Warnst., Flora 66: 374. 1883. ≡Sphagnum limprichtii var. parvifolium (Sendtn. ex Warnst.) Röll, Flora 69: 183. 1886. ≡Sphagnum recurvum subsp. parvifolium (Sendtn. ex Warnst.) Bom. & Broth., Herb. Mus. Fenn. (ed. 2), Musci: 25. 1894. (Bomansson & Brotherus 1894) ≡Sphagnum parvifolium (Sendtn. ex Warnst.) Warnst., Bot. Centralbl. 82: 8. 1900. (Daniels & Eddy 1990) ≡Sphagnum amblyphyllum var. parvifolium (Sendtn. ex Warnst.) Warnst., Pflanzenr. 51: 213. 1911. (Warnstorf 1911) ≡Sphagnum intermedium var. parvifolium (Sendtn. ex Warnst.) Guim., Cat. Descr. Briol. Portug.: 15. 1918.
- =Sphagnum intermedium var. broeckii Cardot, Rev. Bryol. 11: 56. 1884. (Cardot 1884; Wijk et al. 1967) ≡Sphagnum recurvum var. broeckii (Cardot) Warnst., Flora 67: 608. 1884.
- =Sphagnum recurvum var. warnstorfii C.E.O. Jensen, Hedwigia: 23. 1884. ≡Sphagnum recurvum f. warnstorfii (C.E.O. Jensen) Warnst., Verh. Bot. Vereins Prov. Brandenburg 32: 220. 1891. ≡Sphagnum parvifolium var. warnstorfii (C.E.O. Jensen) Zick., Bull. Soc. Imp. Naturalistes Moscou, n.s. 14: 279. 1900. (Zickendrath 1901) ≡Sphagnum brevifolium var. warnstorfii (C.E.O. Jensen) Röll, Hedwigia 46: 234. 1907. ≡Sphagnum amblyphyllum f. warnstorfii (C.E.O. Jensen) Warnst., Pflanzenr. 51: 214. 1911. ≡Sphagnum angustifolium var. warnstorfii (C.E.O. Jensen) C.E.O. Jensen, Danmarks Mosser 1: 271. 1915. (Jensen 1915)
- =Sphagnum recurvum var. roellii Schlieph., Flora 69: 186. 1886. (Ochyra et al. 2003) ≡Sphagnum brevifolium var. roellii (Schlieph.) Röll, Hedwigia 51: 103. 1911.
- =Sphagnum intermedium var. roellii Schlieph., Flora 69: 231. 1886. (Wijk et al. 1967)
- =Sphagnum recurvum var. venustum C.E.O. Jensen, Festskr. Bot. Foren. Kjøbenhavn: 104. 1890. (Jensen 1890)
- =Sphagnum elenkinii Semenov, Trudy Altaisk. Podotd. Russk. Geogr. Obshch. 1: 22, 25. 1921. (Semenov 1921; Michaelis 2019)
Sphagnum annulatum H. Lindb. ex Warnst., Bot. Centralbl. 76(13): 422. 1898. (Hodgetts et al. 2020)

≡Sphagnum jensenii var. annulatum (H. Lindb. ex Warnst.) Warnst., Pflanzenr. 51: 200. 1911. (Warnstorf 1911)
- =Sphagnum annulatum var. teretiramosum Warnst., Bot. Centralbl. 76: 423. 1898. (Flatberg 1988a) ≡Sphagnum jensenii f. teretiramosum (Warnst.) Warnst., Pflanzenr. 51: 200. 1911.
- =Sphagnum annulatum H. Lindb., Meddeland. Soc. Fauna Fl. Fenn. 24: 66, 200. 1900, nom. illeg. (Wijk et al. 1967)
- =Sphagnum propinquum H. Lindb., Sitzungsber. Deutsch. Naturwiss.-Med. Vereins Böhmen "Lotos" Prag 51: 136. 1903, nom. illeg. (Isoviita 1966)
Sphagnum antarense Wijk & Zanten, Nova Guinea, Bot. 10(16): 266. 1964. (Zanten 1964; Michaelis 2019)
Sphagnum antioquiense H.A. Crum, Bryologist 98: 583. 1995. (Crum 1995d; Michaelis 2019)
Sphagnum aongstroemii C. Hartm., Handb. Skand. Fl. (ed. 7) 7: 399. 1858. (Hartman 1858; Hodgetts et al. 2020)
- =Sphagnum cymbifolium var. cordifolium Hartm., Handb. Skand. Fl. (ed. 3) 2: 261. 1838. (Michaelis 2019) ≡Sphagnum latifolium var. cordifolium (Hartm.) Cardot, Bull. Soc. Hist. Nat. Autun 10: 316 [Répert. Sphagnol. 84]. 1897. (Cardot 1897)
- =Sphagnum insulosum Ångstr. ex Schimp., Syn. Musc. Eur.: 683. 1860. (Schimper 1860; Crum 1984b)
- =Sphagnum aongstroemii var. densum Röll, Flora 69: 331. 1886. (Warnstorf 1911) ≡Sphagnum aongstroemii f. densum (Röll) Warnst., Pflanzenr. 51: 139. 1911.
- =Sphagnum aongstroemii var. elegans Röll, Flora 69: 331. 1886. (Warnstorf 1911) ≡Sphagnum aongstroemii f. elegans (Röll) Warnst., Pflanzenr. 51: 139. 1911.
- =Sphagnum aongstroemii var. robustum Röll, Flora 69: 332. 1886. (Warnstorf 1911) ≡Sphagnum aongstroemii f. robustum (Röll) Warnst., Pflanzenr. 51: 139. 1911.
- =Sphagnum aongstroemii var. flavescens Warnst., Samml. Eur. Torfm.: no. 377. 1894. (Warnstorf 1911)
- =Sphagnum aongstroemii f. squarrosulum Russow ex Warnst., Samml. Eur. Torfm.: no. 378. 1894. (Warnstorf 1911)
- =Sphagnum aongstroemii var. glaucovirescens Russow ex Warnst., Pflanzenr. 51: 140 (Sphagnol. Univ. 140). 1911. (Warnstorf 1911)
Sphagnum apopenneysii B.C. Tan, Ignatov, Ignatova & Mishler, Philipp. J. Syst. Biol. 12(1): 34. 2018. (Tan et al. 2018)
Sphagnum arcticum Flatberg & Frisvoll, Bryologist 87: 143. 1984. (Flatberg & Frisvoll 1984b; Hodgetts et al. 2020)
Sphagnum atlanticum R.E. Andrus, Bryologist 110: 274. 2007. (Andrus 2007b; McQueen & Andrus 2007)
Sphagnum atroligneum H.A. Crum, Contr. Univ. Michigan Herb. 21: 147. 1997. (Crum 1997a; Costa 2021)
Sphagnum austinii Sull., Musci Appalach.: 2 [Schedae 3]. 1870. (Austin 1870; Hodgetts et al. 2020)

≡Sphagnum cymbifolium var. austinii (Sull.) Warnst., Eur. Torfm. (Warnstorf): 139. 1881. (Warnstorf 1881) ≡Sphagnum cymbifolium subsp. austinii (Sull.) Cardot, Bull. Soc. Roy. Bot. Belgique 25(1): 50. 1886. ≡Sphagnum imbricatum subsp. austinii (Sull.) Flatberg, Kongel. Norske Vidensk. Selsk. Skr. (Trondheim) 1984(3): 46. 1984. (Flatberg 1984)
- =Sphagnum austinii var. laxum Röll, Flora 69: 475. 1886. (Röll 1886d) ≡Sphagnum imbricatum var. laxum (Röll) Cardot, Bull. Soc. Hist. Nat. Autun 10: 312 [Répert. Sphagnol. 80]. 1897. (Cardot 1897)
- =Sphagnum austinii var. pycnocladum Röll, Flora 69: 475. 1886. (Röll 1886d) ≡Sphagnum imbricatum var. pycnocladum (Röll) Cardot, Bull. Soc. Hist. Nat. Autun 10: 312 [Répert. Sphagnol. 80]. 1897. (Cardot 1897)
- =Sphagnum austinii var. glaucum Röll, Hedwigia 36: 54. 1887. (Röll 1886d) ≡Sphagnum imbricatum var. glaucum (Röll) Wijk & Margad., Taxon 14: 198. 1965. (Wijk & Margadant 1965)
- =Sphagnum imbricatum var. cristatum Warnst., Hedwigia 28: 369. 1889. ≡Sphagnum austinii var. cristatum (Warnst.) Paris, Index Bryol.: 1179. 1898. (Paris 1894-1898)
- =Sphagnum imbricatum var. sublaeve Warnst., Hedwigia 28: 370. 1889. ≡Sphagnum austinii var. sublaeve (Warnst.) Paris, Index Bryol.: 1180. 1898. (Paris 1894-1898)
- =Sphagnum imbricatum var. fuscescens C.E.O. Jensen, Festskr. Bot. Foren. Kjøbenhavn: 68. 1890. (Jensen 1890)
- =Sphagnum imbricatum var. viride C.E.O. Jensen, Festskr. Bot. Foren. Kjøbenhavn: 68. 1890. (Jensen 1890)
- =Sphagnum imbricatum f. fuscescens Warnst., Krypt.-Fl. Brandenburg, Leber- & Torfm.: 324. 1903, nom. illeg. (Flatberg 1984)
- =Sphagnum imbricatum var. cuspidatum Röll, Hedwigia 46: 244. 1907. (Röll 1907b)
- =Sphagnum imbricatum var. tenellum Röll, Hedwigia 46: 244. 1907. (Röll 1907b)
- =Sphagnum imbricatum var. teres Röll, Hedwigia 46: 244. 1907. (Röll 1907b)
- =Sphagnum imbricatum f. spectabile Wheldon, Syn. Eur. Sphagna: 38. 1917. (Wheldon 1917)
Sphagnum australe Mitt., Fl. Tasman. 2: 162. 1859. (Hooker 1860; Michaelis 2019)

Replaced synonym: Sphagnum compactum var. ovatum Hook. f. & Wilson, Fl. Antarct. 1: 122. 1845. (Hooker 1844; Michaelis 2019)

≡Sphagnum antarcticum var. australe (Mitt.) Warnst., Pflanzenr. 51: 154. 1911, nom. illeg. (Warnstorf 1911)
- =Sphagnum campbellii Schimp., Vers. Entw.-Gesch. Torfm.: 82. 1858, nom. dub. (Schimper 1858; Michaelis 2019)
- =Sphagnum confertum Mitt., Fl. Tasman. 2: 163. 1859. (Hooker 1860; McCarthy 2006)
- =Sphagnum antarcticum Mitt., J. Proc. Linn. Soc., Bot. 4: 100. 1859. (Mitten 1859a; McCarthy 2006)
- =Sphagnum macrorigidum Müll. Hal., Flora 70: 417. 1887. (Müller 1887; Wijk et al. 1967)
- =Sphagnum helmsii Warnst., Hedwigia 29: 239, 244. 1890. (Warnstorf 1890d; McCarthy 2006) ≡Sphagnum antarcticum var. helmsii (Warnst.) Warnst., Pflanzenr. 51: 155. 1911. (Warnstorf 1911)
- =Sphagnum erosum Warnst., Hedwigia 29: 242. 1890. (Warnstorf 1890d; Fife 1996)
- =Sphagnum guatemalense Warnst., Hedwigia 29: 243. 1890. (Warnstorf 1890d; Wijk et al. 1967)
- =Sphagnum antarcticum var. fluctuans Warnst., Hedwigia 29: 254. 1890. (Warnstorf 1890d; Warnstorf 1911)
- =Sphagnum macrocephalum Warnst., Hedwigia 32: 7. 1893. (McCarthy 2006) ≡Sphagnum antarcticum var. macrocephalum (Warnst.) Warnst., Pflanzenr. 51: 155. 1911. (Warnstorf 1911)
- =Sphagnum densicaule Warnst., Hedwigia 39: 105. 1900. (Wijk et al. 1967)
- =Sphagnum antarcticum var. ericetorum Warnst., Pflanzenr. 51: 155. 1911. (Warnstorf 1911)
- =Sphagnum antarcticum f. densissimum Warnst., Pflanzenr. 51: 157. 1911. ≡Sphagnum antarcticum var. densissimum (Warnst.) Rodway, Pap. & Proc. Roy. Soc. Tasmania 1913: 254. 1914. (Streimann & Klazenga 2002)
- =Sphagnum antarcticum var. subsquarrosum Warnst. ex Rodway, Pap. & Proc. Roy. Soc. Tasmania 1913: 255. 1914. (Streimann & Klazenga 2002)
- =Sphagnum weymouthii Warnst. ex Rodway, Pap. & Proc. Roy. Soc. Tasmania 1913: 255. 1914. (McCarthy 2006)
Sphagnum austroamericanum H.A. Crum, J. Hattori Bot. Lab. 74: 151. 1993. (Crum 1993a; Michaelis 2019)
Sphagnum azuayense H.A. Crum, J. Hattori Bot. Lab. 63: 94. 1987. (Crum 1987b; Michaelis 2019)
Sphagnum balslevii H.A. Crum, J. Hattori Bot. Lab. 77: 249. 1994. (Crum 1994a; Michaelis 2019)
Sphagnum balticum (Russow) C.E.O. Jensen, Festskr. Bot. Foren. Kjøbenhavn: 100. 1890. (Hodgetts et al. 2020)

Basionym: Sphagnum recurvum subsp. balticum Russow, Sitzungsber. Naturf.-Ges. Univ. Dorpat 9(1): 99, 111. 1890.
- =Sphagnum cuspidatum var. mollissimum Russow, Beitr. Torfm.: 61. 1865. (Michaelis 2019) ≡Sphagnum intermedium var. mollissimum (Russow) Broth. & Saelan, Acta Soc. Fauna Fl. Fenn. 6: 42. 1890. ≡Sphagnum recurvum var. mollissimum (Russow) Warnst., Verh. Bot. Vereins Prov. Brandenburg 32: 221. 1891. ≡Sphagnum recurvum subsp. mollissimum (Russow) Bom. & Broth., Herb. Mus. Fenn. (ed. 2), Musci: 25. 1894. (Bomansson & Brotherus 1894)
- =Sphagnum cuspidatum var. roellii Schlieph., Flora 69: 233. 1886. ≡Sphagnum schliephackei var. roellii (Schlieph.) G. Roth, Eur. Torfm. (Roth): 38. 1906. (Roth 1906) ≡Sphagnum roellii (Schlieph.) G. Roth, Hedwigia 47: 324. 1908. (Crum 1984b) ≡Sphagnum fallax var. roellii (Schlieph.) Warnst., Pflanzenr. 51: 253. 1911. (Warnstorf 1911)
- =Sphagnum recurvum f. elegans Russow ex Warnst., Samml. Eur. Torfm.: no. 194. 1890. (Warnstorf 1911) ≡Sphagnum balticum var. elegans (Russow ex Warnst.) C.E.O. Jensen, Bih. Kongl. Svenska Vetensk.-Akad. Handl. 3(10): 40. 1896. (Arnell & Jensen 1896) ≡Sphagnum balticum f. elegans (Russow ex Warnst.) Warnst., Pflanzenr. 51: 228. 1911.
- =Sphagnum recurvum f. delicatulum Warnst., Verh. Bot. Vereins Prov. Brandenburg 32: 222. 1891. ≡Sphagnum balticum var. delicatulum (Warnst.) Warnst., Pflanzenr. 51: 228 (Sphagnol. Univ. 228). 1911. (Warnstorf 1911)
- =Sphagnum recurvum f. livonicum Russow ex Warnst., Samml. Eur. Torfm. 3: 250. 1892. ≡Sphagnum livonicum (Russow ex Warnst.) G. Roth, Hedwigia 47: 325. 1908. (Crum 1984b) ≡Sphagnum balticum var. livonicum (Russow ex Warnst.) Warnst., Pflanzenr. 51: 227 (Sphagnol. Univ. 227). 1911. (Warnstorf 1911)
- =Sphagnum balticum var. polyporum Warnst., Krypt.-Fl. Brandenburg, Leber- & Torfm.: 397. 1903. (Warnstorf 1902–1903)
- =Sphagnum balticum var. capitatum Röll, Hedwigia 46: 233. 1907. (Röll 1907b)
- =Sphagnum balticum var. gracile Röll, Hedwigia 46: 233. 1907. (Röll 1907b)
- =Sphagnum balticum var. longifolium Röll, Hedwigia 46: 233. 1907. (Röll 1907b)
- =Sphagnum ruppinense Warnst., Hedwigia 47: 115. 1908. (Crum 1984b) ≡Sphagnum balticum var. ruppinense (Warnst.) Pilous, Fl. ČSSR, C, Bryol. 1: 302. 1971. (Pilous 1971)
- =Sphagnum balticum var. dasycladum Warnst., Pflanzenr. 51: 227 (Sphagnol. Univ. 227). 1911. (Warnstorf 1911)
- =Sphagnum balticum var. congestum Röll, Hedwigia 51: 107. 1911. (Röll 1911b)
- =Sphagnum balticum var. deflexum Röll, Hedwigia 51: 107. 1911. (Röll 1911b)
- =Sphagnum balticum var. homocladum Röll, Hedwigia 51: 107. 1911. (Röll 1911b)
- =Sphagnum balticum var. molluscum Röll, Hedwigia 51: 107. 1911. (Röll 1911b)
- =Sphagnum balticum var. pseudorecurvum Röll, Hedwigia 51: 107. 1911. (Röll 1911b)
- =Sphagnum balticum var. recurvum Röll, Hedwigia 51: 107. 1911. (Röll 1911b)
- =Sphagnum balticum var. robustum Röll, Hedwigia 51: 107. 1911. (Röll 1911b)
- =Sphagnum balticum var. strictiforme Röll, Hedwigia 51: 107. 1911. (Röll 1911b)
- =Sphagnum balticum var. submersum Röll, Hedwigia 51: 107. 1911. (Röll 1911b)
- =Sphagnum balticum var. tenellum Röll, Hedwigia 51: 107. 1911. (Röll 1911b)
- =Sphagnum livonicum var. congestum Röll, Hedwigia 51: 108. 1911. (Röll 1911b)
- =Sphagnum livonicum var. gracile Röll, Hedwigia 51: 108. 1911. (Röll 1911b)
- =Sphagnum livonicum var. homocladum Röll, Hedwigia 51: 108. 1911. (Röll 1911b)
- =Sphagnum livonicum var. recurvum Röll, Hedwigia 51: 108. 1911. (Röll 1911b)
- =Sphagnum livonicum var. strictiforme Röll, Hedwigia 51: 108. 1911. (Röll 1911b)
- =Sphagnum livonicum var. submersum Röll, Hedwigia 51: 108. 1911. (Röll 1911b)
- =Sphagnum livonicum var. tenue Röll, Hedwigia 51: 108. 1911. (Röll 1911b)
- =Sphagnum roellii var. compactum Röll, Hedwigia 56: 74. 1915. (Röll 1915)
- =Sphagnum roellii var. recurvum Röll, Hedwigia 56: 74. 1915. (Röll 1915)
- =Sphagnum balticum var. falcatum Röll, Hedwigia 56: 80. 1915. (Röll 1915)
- =Sphagnum balticum var. macrophyllum Röll, Hedwigia 59: 295. 1917. (Röll 1917)
- =Sphagnum roellii var. macrocephalum Röll, Hedwigia 59: 297. 1917. (Röll 1917)
- =Sphagnum roellii var. capitatum Röll, Hedwigia 59: 298. 1917. (Röll 1917)
- =Sphagnum roellii var. immersum Röll, Hedwigia 59: 298. 1917. (Röll 1917)
- =Sphagnum roellii var. flagellare Röll, Hedwigia 60: 25. 1918. (Röll 1918)
- =Sphagnum roellii var. squarrosulum Röll, Hedwigia 60: 25. 1918. (Röll 1918)
- =Sphagnum roellii var. tenellum Röll, Hedwigia 60: 25. 1918. (Röll 1918)
- =Sphagnum roellii var. deflexum Röll, Hedwigia 60: 48. 1918. (Röll 1918)
- =Sphagnum roellii var. patulum Röll, Hedwigia 60: 48. 1918. (Röll 1918)
- =Sphagnum roellii var. cuspidatum Röll, Hedwigia 64: 226. 1923. (Röll 1923b)
- =Sphagnum balticum var. crispulum Röll, Hedwigia 64: 227. 1923. (Röll 1923b)
Sphagnum barclayae H.A. Crum, J. Bryol. 15: 531. 1989. (Crum 1989a; Michaelis 2019)
Sphagnum bartlettianum Warnst., Pflanzenr. 51: 105. 1911. (McQueen & Andrus 2007)
- =Sphagnum bartlettianum var. roseum Warnst., Pflanzenr. 51: 519. 1911. (Warnstorf 1911; McQueen & Andrus 2007)
Sphagnum beothuk R.E. Andrus, Sida 22: 966. 2006. (Andrus 2006; Hodgetts et al. 2020)
Sphagnum bergianum R.E. Andrus, Sida 22: 964. 2006. (Andrus 2006; McQueen & Andrus 2007)
Sphagnum beringiense A.J. Shaw, R.E. Andrus & B. Shaw, Syst. Bot. 33: 471. 2008. (Shaw et al. 2008; Michaelis 2019)
Sphagnum billbuckii H.A. Crum, Contr. Univ. Michigan Herb. 21: 150. 1997. (Crum 1997a; Costa 2021)
Sphagnum boliviae Warnst., Hedwigia 47: 96. 1907. (Michaelis 2019)
- =Sphagnum boliviae var. virescens Warnst., Hedwigia 47: 96. 1907. (Crum 1990c)
Sphagnum boomii H.A. Crum, Mem. New York Bot. Gard. 64: 185. 1990. (Buck 1990; Michaelis 2019)
Sphagnum boyacanum H.A. Crum, Contr. Univ. Michigan Herb. 20: 133. 1995. (Crum 1995a; Michaelis 2019)
Sphagnum brachybolax Müll. Hal. ex Warnst., Hedwigia 30: 150. 1891. (Costa 2021)
Sphagnum brasiliense Warnst., Hedwigia 30: 150. 1891. (Warnstorf 1891a; Costa 2021)
- =Sphagnum brasiliense var. glaucescens Warnst., Hedwigia 30: 150. 1891. (Warnstorf 1891a; Warnstorf 1911)
- =Sphagnum brasiliense var. carneum Warnst., Hedwigia 30: 151. 1891. (Warnstorf 1891a; Costa 2021)
- =Sphagnum brasiliense var. chlorinum Warnst., Hedwigia 30: 151. 1891. (Warnstorf 1891a; Warnstorf 1911)
- =Sphagnum brasiliense var. pallescens Warnst., Pflanzenr. 51: 493. 1911. (Warnstorf 1911)
- =Sphagnum columniforme H.A. Crum, J. Hattori Bot. Lab. 77: 233. 1994. (Crum 1994a; Costa 2021)
Sphagnum breedlovei H.A. Crum, Contr. Univ. Michigan Herb. 23: 113. 2001. (Crum 2001; Michaelis 2019)
Sphagnum brevirameum Hampe, Vidensk. Meddel. Dansk Naturhist. Foren. Kjøbenhavn ser. 3, 6: 129. 1875. (Hampe 1875; Costa 2021)
- =Sphagnum medium var. papillosum Warnst., Hedwigia 29: 186. 1890. (Crum 1989a)
Sphagnum calymmatophyllum Warnst. & Cardot, Bull. Herb. Boissier, sér. 2, 7: 711. 1907. (Cardot 1907; Michaelis 2019)
- =Sphagnum ovalifolium var. japonicum Warnst., Hedwigia 47: 97. 1907. (Michaelis 2019)
Sphagnum capense Hornsch., Linnaea 15: 113. 1841. (Hornschuch 1841; Michaelis 2019)
- =Sphagnum obtusifolium var. capense Sw., Adnot. Bot.: 71. 1829, nom. dub. (Swartz 1829; O'Shea 2006)
- =Sphagnum mollissimum Müll. Hal., Flora 70: 418. 1887. (Müller 1887; Eddy 1985) ≡Sphagnum capense var. mollissimum (Müll. Hal.) Warnst., Pflanzenr. 51: 430. 1911. (Warnstorf 1911)
- =Sphagnum pandurifolium Müll. Hal., Flora 70: 418. 1887. (Müller 1887; Eddy 1985)
- =Sphagnum austromolle Müll. Hal., Flora 70: 419. 1887. (Eddy 1985) ≡Sphagnum capense var. austromolle (Müll. Hal.) Warnst., Pflanzenr. 51: 430. 1911. (Warnstorf 1911)
- =Sphagnum wenckei Röll, Oesterr. Bot. Z. 57: 7. 1907. (Eddy 1985)
- =Sphagnum capense var. multiporosum Warnst., Pflanzenr. 51: 428. 1911. (Warnstorf 1911; Eddy 1985)
- =Sphagnum humbertii Cardot, Bull. Mus. Natl. Hist. Nat. 22(6): 342. 1916. (Eddy 1985)
- =Sphagnum bourbonense H.A. Crum, Bryologist 95: 276. 1992. (Crum 1992a; Michaelis 2019)
Sphagnum capillifolium (Ehrh.) Hedw., Fund. Hist. Nat. Musc. Frond. 2: 86. 1782. (Hedwig 1782; Hodgetts et al. 2020)

Basionym: Sphagnum palustre subsp. capillifolium Ehrh., Hannover. Mag. 18(15): 235. 1780. (Ehrhart 1780)

≡Sphagnum acutifolium var. capillifolium (Ehrh.) Funck, Deutschl. Moose (Funck): 5. 1820. (Funck 1820)
- =Sphagnum palustre var. capillaceum Weiss, Pl. Crypt. Fl. Gott.: 265. 1770. (Weiss 1770) ≡Sphagnum capillaceum (Weiss) Schrank, Baier. Fl. 2: 435. 1789. (Schrank 1789; Crum 1984b)
- =Sphagnum nemoreum Scop., Fl. Carniol. (ed. 2) 2: 305. 1772, nom. dub. (Isoviita 1966)
- =Sphagnum intermedium Hoffm., Deutschl. Fl. 2: 22. 1795[1796], nom. illeg. (Hoffmann 1796; Crum 1984b) ≡Sphagnum palustre var. intermedium (Hoffm.) Lilj., Utkast Sv. Fl. (ed. 2): 393. 1798. (Liljeblad 1798) ≡Sphagnum variabile subsp. intermedium (Hoffm.) Warnst., Flora 65: 550. 1882, nom. illeg.
- =Sphagnum acutifolium Ehrh. ex Schrad., Syst. Samm. Cryptog. Gew. 1: 8. 1796. (Schrader 1796; Isoviita 1966) ≡Sphagnum nemoreum subsp. acutifolium (Ehrh. ex Schrad.) Bott., Atti Reale Accad. Lincei, Mem. Cl. Sci. Fis., ser. 5, 13(1): 20. 1919.
- =Sphagnum gracile Michx., Fl. Bor.-Amer. 2: 285. 1803. (Michaux 1803; Crum 1984b)
- =Gymnostomum intermedium Rebent., Prodr. Fl. Neomarch.: 252. 1804, nom. illeg. (Rebentisch 1804; Wijk et al. 1962)
- =Gymnostomum intermedium var. compactum Rebent., Prodr. Fl. Neomarch.: 252. 1804. (Rebentisch 1804; Lindberg 1882)
- =Sphagnum subulatum Brid., Muscol. Recent. Suppl. 1: 18. 1806. (Bridel 1806–1817; Crum 1984b) ≡Sphagnum acutifolium var. subulatum (Brid.) Nees & Hornsch., Bryol. Germ. 1: 21. 1823. (Nees von Esenbeck et al. 1823) ≡Sphagnum capillifolium var. subulatum (Brid.) Steud., Nomencl. Bot. 2: 397. 1824. (Steudel 1824)
- =Sphagnum capillifolium var. brevisetum Brid., Muscol. Recent. Suppl. 4: 2. 1819[1818]. (Bridel 1819)
- =Sphagnum capillifolium var. schkuhrii Brid., Muscol. Recent. Suppl. 4: 2. 1819[1818]. (Bridel 1819; Wijk et al. 1967) ≡Sphagnum acutifolium var. schkuhrii (Brid.) Brid., Bryol. Univ. 2: 822. 1827. (Bridel 1827b)
- =Sphagnum capillaceum var. densum Hartm., Handb. Skand. Fl.: 381. 1820. (Hartman 1820; Wijk et al. 1967)
- =Sphagnum acutifolium var. robustum Blandow ex Nees & Hornsch., Bryol. Germ. 1: 21. 1823. (Nees von Esenbeck et al. 1823; Wijk et al. 1967) ≡Sphagnum capillifolium var. robustum (Blandow ex Nees & Hornsch.) Steud., Nomencl. Bot. 2: 397. 1824. (Steudel 1824)
- =Sphagnum capillifolioides Breutel, Flora 7: 438. 1824. (Crum 1984b) ≡Sphagnum capillifolium var. capillifolioides (Breutel) Steud., Nomencl. Bot. 2: 397. 1824. (Steudel 1824)
- =Sphagnum aschenbachianum Breutel, Flora 7: 439. 1824. (Crum 1984b)
- =Sphagnum capillaceum subsp. plumosum Wahlenb., Fl. Suec. (Wahlenberg) 2: 776. 1826. (Wahlenberg 1826)
- =Sphagnum acutifolium var. gracile Weinm., Bull. Soc. Imp. Naturalistes Moscou 18(2): 435. 1845. (Weinmann 1845)
- =Sphagnum acutifolium var. commune Bayrh., Jahrb. Vereins Naturk. Herzogth. Nassau 5: 35. 1849. (Bayrhoffer 1849)
- =Sphagnum acutifolium var. rubicundulum Bayrh., Jahrb. Vereins Naturk. Herzogth. Nassau 5: 35. 1849. (Bayrhoffer 1849)
- =Sphagnum acutifolium var. commune Bayrh., Jahrb. Vereins Naturk. Herzogth. Nassau 5: 36. 1849. (Bayrhoffer 1849)
- =Sphagnum acutifolium var. rubrum Bayrh., Jahrb. Vereins Naturk. Herzogth. Nassau 5: 36. 1849. (Bayrhoffer 1849)
- =Sphagnum acutifolium var. squalidum Bayrh., Jahrb. Vereins Naturk. Herzogth. Nassau 5: 36. 1849. (Bayrhoffer 1849)
- =Sphagnum acutifolium var. elongatum Bayrh., Jahrb. Vereins Naturk. Herzogth. Nassau 5: 36 [line 13]. 1849. (Bayrhoffer 1849)
- =Sphagnum acutifolium var. elongatum Bayrh., Jahrb. Vereins Naturk. Herzogth. Nassau 5: 36 [line 3]. 1849. (Bayrhoffer 1849)
- =Sphagnum acutifolium var. deustum Poech, Lotos 1: 179. 1851. (Keil 1851)
- =Sphagnum acutifolium var. laterale Keil, Lotos 1: 179. 1851. (Keil 1851)
- =Sphagnum acutifolium var. variegatum Poech, Lotos 1: 179. 1851. (Keil 1851)
- =Sphagnum acutifolium var. deflexum Schimp., Mém. Hist. Nat. Sphaignes: 62. 1857. (Ochyra et al. 2003) ≡Sphagnum nemoreum var. deflexum (Schimp.) Venturi & Bott., Atti Soc. Crittog. Ital. 3: 226. 1884. ≡Sphagnum acutifolium f. deflexum (Schimp.) Warnst., Pflanzenr. 51: 101. 1911.
- =Sphagnum acutifolium var. tenellum A.A. Fisch. Waldh., Bull. Soc. Imp. Naturalistes Moscou 37(3): 60. 1864, nom. illeg. (Fischer von Waldheim 1864)
- =Sphagnum subrigidum Hampe & Lorentz, Bot. Zeitung (Berlin) 16: 795. 1868. (Michaelis 2019)
- =Sphagnum acutifolium var. alpinum Milde, Bryol. Siles.: 382. 1869. ≡Sphagnum acutiforme var. alpinum (Milde) Warnst., Flora 67: 605. 1884. ≡Sphagnum nemoreum var. alpinum (Milde) Wijk & Margad., Taxon 14: 198. 1965. (Wijk & Margadant 1965; Ireland, Jr. et al. 1987)
- =Sphagnum acutifolium var. elegans Braithw., Sphagnac. Eur.: 72. 1880. (Braithwaite 1878; Michaelis 2019) ≡Sphagnum acutiforme var. elegans (Braithw.) Warnst., Flora 67: 605. 1884. ≡Sphagnum nemoreum var. elegans (Braithw.) Wijk & Margad., Taxon 14: 198. 1965. (Wijk & Margadant 1965)
- =Sphagnum acutifolium var. secundum Warnst., Eur. Torfm. (Warnstorf): 43. 1881. (Warnstorf 1881; Cardot 1897)
- =Sphagnum acutifolium var. fuscovirescens Warnst., Eur. Torfm. (Warnstorf): 49. 1881. (Warnstorf 1881; Cardot 1897) ≡Sphagnum acutiforme var. fuscovirescens (Warnst.) Warnst., Flora 67: 605. 1884. ≡Sphagnum plumulosum var. fuscovirescens (Warnst.) Röll, Flora 69: 91. 1886.
- =Sphagnum acutifolium var. schimperi Warnst., Eur. Torfm. (Warnstorf): 51. 1881. (Warnstorf 1881; Michaelis 2019) ≡Sphagnum acutiforme var. schimperi (Warnst.) Warnst., Flora 67: 605. 1884. ≡Sphagnum nemoreum subsp. schimperi (Warnst.) Bott., Atti Reale Accad. Lincei, Mem. Cl. Sci. Fis., ser. 5, 13(1): 20. 1919. ≡Sphagnum nemoreum var. schimperi (Warnst.) Pilous, Fl. ČSSR, C, Bryol. 1: 396. 1971. (Pilous 1971)
- =Sphagnum acutifolium var. strictum Warnst., Eur. Torfm. (Warnstorf): 52. 1881, nom. illeg. (Warnstorf 1881) ≡Sphagnum nemoreum var. strictum (Warnst.) Venturi & Bott., Atti Soc. Crittog. Ital. 3: 226. 1884, nom. illeg. (Wijk et al. 1967)
- =Sphagnum acutifolium var. congestum Grav. ex Warnst., Eur. Torfm. (Warnstorf): 54. 1881. (Warnstorf 1881; Cardot 1897)
- =Sphagnum variabile var. intermedium Warnst., Eur. Torfm. (Warnstorf): 60. 1881. (Warnstorf 1881; Wijk et al. 1967)
- =Sphagnum acutifolium var. rubrum Brid. ex Warnst., Bot. Centralbl. 23: 100. 1882, nom. illeg. (Warnstorf 1911)
- =Sphagnum acutifolium var. albescens Schlieph. ex Warnst., Flora 65: 206. 1882. (Warnstorf 1911) ≡Sphagnum plumulosum var. albescens (Schlieph. ex Warnst.) Röll, Flora 69: 91. 1886.
- =Sphagnum acutifolium var. schliephackeanum Warnst., Flora 65: 464. 1882. ≡Sphagnum schliephackeanum (Warnst.) Röll, Flora 69: 43. 1886. (Crum 1984b)
- =Sphagnum acutifolium var. pycnocladum Schlieph., Irmischia 2: 64. 1882. (Schliephacke 1882; Warnstorf 1911) ≡Sphagnum schimperi var. pycnocladum (Schlieph.) Röll, Flora 69: 41. 1886.
- =Sphagnum acutifolium var. capitatum Ångstr., Sphagnoth. Eur. 2: no. 53. 1882. (Cardot 1897)
- =Sphagnum acutifolium var. sanguineum Sendtn. ex Warnst., Flora 66: 372. 1883. (Warnstorf 1911) ≡Sphagnum acutiforme var. sanguineum (Sendtn. ex Warnst.) Warnst., Flora 67: 605. 1884.
- =Sphagnum acutifolium var. atroviride Schlieph., Abh. Thüring. Bot. Vereins "Irmischia" 3: 21. 1884. ≡Sphagnum wilsonii var. atroviride (Schlieph.) Röll, Flora 69: 80. 1886. ≡Sphagnum nemoreum var. atroviride (Schlieph.) Wijk & Margad., Taxon 14: 198. 1965. (Wijk & Margadant 1965)
- =Sphagnum acutiforme var. pseudoschimperi Warnst., Flora 67: 605. 1884. ≡Sphagnum acutifolium var. pseudoschimperi (Warnst.) Cardot, Bull. Soc. Roy. Bot. Belgique 25(1): 87, 116. 1886. (Cardot 1886) ≡Sphagnum schimperi var. pseudoschimperi (Warnst.) Röll, Flora 69: 40. 1886.
- =Sphagnum acutifolium var. densum Warnst., Hedwigia 23: 116. 1884. (Warnstorf 1884b) ≡Sphagnum schimperi var. densum (Warnst.) Röll, Flora 69: 39. 1886. (Cardot 1897)
- =Sphagnum acutifolium var. caerulescens Bosw. ex Curn., Trans. Penzance Nat. Hist. Antiq. Soc. 1: 386. 1884. (Curnow 1884)
- =Sphagnum acutifolium var. speciosum Warnst., Bull. Soc. Roy. Bot. Belgique 25(1): 85, 115. 1886. ≡Sphagnum schimperi var. speciosum (Warnst.) Röll, Hedwigia 42(Beibl): 25. 1903. (Röll 1903a)
- =Sphagnum schliephackeanum var. polycladum Cardot ex Röll, Flora 69: 44. 1886. ≡Sphagnum acutifolium var. polycladum (Cardot ex Röll) Cardot, Bull. Soc. Roy. Bot. Belgique 25(1): 87, 116. 1886. (Cardot 1886)
- =Sphagnum acutifolium f. congestum Warnst. ex Cardot, Bull. Soc. Roy. Bot. Belgique 25: 116. 1886, nom. illeg. (Cardot 1886)
- =Sphagnum acutifolium var. cardotii Warnst., Bull. Soc. Roy. Bot. Belgique 25: 85. 1886. (Cardot 1897)
- =Sphagnum schimperi Röll, Flora 69: 39. 1886. (Düll 1984) ≡Sphagnum capillifolium var. schimperi (Röll) Düll, Bryol. Beitr. 4: 9. 1984. (Düll 1984)
- =Sphagnum schimperi var. compactum Röll, Flora 69: 39. 1886. (Cardot 1897)
- =Sphagnum schimperi var. deflexum Röll, Flora 69: 39. 1886. (Cardot 1897)
- =Sphagnum schimperi var. parvulum Röll, Flora 69: 39. 1886. (Cardot 1897)
- =Sphagnum schimperi var. repens Röll, Flora 69: 39. 1886. (Cardot 1897)
- =Sphagnum schimperi var. squarrosulum Röll, Flora 69: 40. 1886. (Cardot 1897)
- =Sphagnum schimperi var. squarrosum Röll, Flora 69: 40. 1886. (Cardot 1897)
- =Sphagnum schimperi var. strictum Röll, Flora 69: 40. 1886. (Cardot 1897)
- =Sphagnum schimperi var. laxum Röll, Flora 69: 41. 1886. (Warnstorf 1911)
- =Sphagnum schimperi var. plumosum Röll, Flora 69: 41. 1886. (Cardot 1897)
- =Sphagnum schimperi var. roseum Röll, Flora 69: 41. 1886. (Cardot 1897)
- =Sphagnum schimperi var. teretiusculum Röll, Flora 69: 41. 1886. (Cardot 1897)
- =Sphagnum schliephackeanum var. congestum Röll, Flora 69: 44. 1886. (Cardot 1897)
- =Sphagnum schliephackeanum var. gracile Röll, Flora 69: 44. 1886. (Cardot 1897)
- =Sphagnum schliephackeanum var. rotundifolium Röll, Flora 69: 44. 1886. (Cardot 1897)
- =Sphagnum acutifolium f. gracilescens Röll, Flora 69: 74. 1886. (Röll 1886e)
- =Sphagnum acutifolium f. flagelliforme Röll, Flora 69: 75. 1886. ≡Sphagnum acutifolium var. flagelliforme (Röll) Röll, Hedwigia 56: 56. 1915. (Röll 1915)
- =Sphagnum acutifolium f. versicolor Röll, Flora 69: 75. 1886. (Röll 1886e)
- =Sphagnum acutifolium var. cruentum Röll, Flora 69: 76. 1886. (Warnstorf 1911)
- =Sphagnum diblastum Müll. Hal., Flora 70: 416. 1887. (Müller 1887; Matteri 2003) ≡Sphagnum acutifolium f. diblastum (Müll. Hal.) Warnst. ex Paris, Actes Soc. Linn. Bordeaux 51: 212. 1897.
- =Sphagnum acutifolium var. flavescens Warnst., Verh. Bot. Vereins Prov. Brandenburg 30: 114. 1888. (Warnstorf 1911)
- =Sphagnum acutifolium var. griseum Warnst., Verh. Bot. Vereins Prov. Brandenburg 30: 114. 1888. (Warnstorf 1911)
- =Sphagnum acutifolium var. obscurum Warnst., Verh. Bot. Vereins Prov. Brandenburg 30: 114. 1888. (Warnstorf 1911)
- =Sphagnum acutifolium var. pallescens Warnst., Verh. Bot. Vereins Prov. Brandenburg 30: 114. 1888. (Warnstorf 1911)
- =Sphagnum acutifolium var. versicolor Warnst., Verh. Bot. Vereins Prov. Brandenburg 30: 114. 1888, nom. illeg. (Ochyra et al. 2003)
- =Sphagnum acutifolium var. viride Warnst., Verh. Bot. Vereins Prov. Brandenburg 30: 114. 1888, nom. illeg. ≡Sphagnum capillifolium var. viride Jenn., Man. Mosses W. Pennsylvania: 39. 1913. (Jennings 1913; Michaelis 2019)
- =Sphagnum acutifolium var. corbierei Cardot, Mém. Soc. Sci. Nat. Math. Cherbourg 26: 208, 364. 1889. (Corbière 1889)
- =Sphagnum acutifolium var. flavorubellum Warnst., Bot. Gaz. 15: 193. 1890. (Warnstorf 1911)
- =Sphagnum acutifolium var. fuscum Röll, Bot. Centralbl. 46: 255. 1891, nom. illeg. (Röll 1891a)
- =Sphagnum acutifolium var. schlotthaueri Röll, Bot. Centralbl. 46: 255. 1891. (Röll 1891a)
- =Sphagnum acutifolium var. villardii Röll, Bot. Centralbl. 46: 255. 1891. (Röll 1891a)
- =Sphagnum acutifolium var. coloratum Röll, Bot. Centralbl. 46: 256. 1891. (Röll 1891a)
- =Sphagnum acutifolium var. gracile Röll, Bot. Centralbl. 46: 373. 1891, nom. illeg. (Röll 1891b)
- =Sphagnum densum Müll. Hal. & Warnst., Hedwigia 36: 147. 1897. (Yano 1996)
- =Sphagnum oxyphyllum var. nanum Müll. Hal. & Warnst., Hedwigia 36: 150. 1897. ≡Sphagnum acutifolium var. nanum (Müll. Hal. & Warnst.) Paris, Index Bryol.: 1177. 1898. ≡Sphagnum parvulum Warnst., Hedwigia 47: 110. 1907. (Yano 1996)
- =Sphagnum schimperi var. capitatum Röll, Hedwigia 36: 325. 1897. (Röll 1897a)
- =Sphagnum schimperi var. dimorphum Röll, Hedwigia 36: 325. 1897. (Röll 1897a)
- =Sphagnum acutifolium var. flavoglaucescens Warnst., Schriften Naturf. Ges. Danzig 9(2): 153. 1897. (Warnstorf 1897)
- =Sphagnum acutifolium var. fuscoglaucescens Warnst., Schriften Naturf. Ges. Danzig 9(2): 154. 1897. (Warnstorf 1897)
- =Sphagnum acutifolium var. pallidoglaucescens Warnst., Schriften Naturf. Ges. Danzig 9(2): 154. 1897. (Warnstorf 1897)
- =Sphagnum acutifolium var. rubelliforme Cypers, Verh. K.K. Zool.-Bot. Ges. Wien 47: 184. 1897. (Cypers von Landrey 1897) ≡Sphagnum acutifolium f. rubelliforme (Cypers) Kavina, Sitzungsber. Königl. Böhm. Ges. Wiss. Prag, Math.-Naturwiss. Cl. 1912(11): 148. 1913.
- =Sphagnum schimperi var. flagellatum Röll, Verh. K.K. Zool.-Bot. Ges. Wien 47: 666. 1898. (Röll 1897b)
- =Sphagnum acutifolium var. roseum Warnst., Verh. Bot. Vereins Prov. Brandenburg 41: 37. 1899, nom. illeg. (Warnstorf 1899)
- =Sphagnum brunnescens Warnst., Beih. Bot. Centralbl., Abt. 2, 20: 129. 1906. (Yano 1996) ≡Sphagnum aciphyllum var. brunnescens (Warnst.) Warnst., Pflanzenr. 51: 109. 1911. (Warnstorf 1911)
- =Sphagnum acutifolium var. roseum Péterfi, Magyar Bot. Lapok 5: 265. 1906, nom. illeg. (Péterfi 1906)
- =Sphagnum eatonii Warnst., Hedwigia 47: 100. 1907. (Crum 1984b)
- =Sphagnum versicolor Warnst., Hedwigia 47: 108. 1907. (Yano 1996)
- =Sphagnum versicolor var. rubrum Warnst., Hedwigia 47: 109. 1907. (Warnstorf 1911)
- =Sphagnum versicolor var. viride Warnst., Hedwigia 47: 109. 1907. (Warnstorf 1907)
- =Sphagnum evansii Warnst., Hedwigia 47: 99. 1907. (Crum 1984b)
- =Sphagnum acutifolium var. roseum Warnst., Pflanzenr. 51: 101. 1911, nom. illeg. (Warnstorf 1911)
- =Sphagnum acutifolium var. intricatum Schlieph., Pflanzenr. 51: 120. 1911. (Warnstorf 1911)
- =Sphagnum tenerum var. pseudorussowii Warnst., Pflanzenr. 51: 124. 1911, nom. illeg. (Warnstorf 1911; Crum 1984b)
- =Sphagnum tenerum var. pycnocladum Warnst., Pflanzenr. 51: 544. 1911. (Warnstorf 1911)
- =Sphagnum tenerum var. roseum Warnst., Pflanzenr. 51: 544. 1911. (Warnstorf 1911)
- =Sphagnum versicolor var. virescens Warnst., Pflanzenr. 51: 90 (Sphagnol. Univ. 90). 1911, nom. illeg. (Warnstorf 1911)
- =Sphagnum acutifolium var. tenellum Röll, Hedwigia 51: 90. 1911, nom. illeg. (Röll 1911b)
- =Sphagnum schimperi var. strictiforme Röll, Hedwigia 51: 90. 1911. (Röll 1911b)
- =Sphagnum acutifolium f. densum Wheldon, Syn. Eur. Sphagna: 9. 1917, nom. illeg. (Wheldon 1917)
- =Sphagnum acutifolium f. spiciforme Ingham & Wheldon, Syn. Eur. Sphagna: 9. 1917. (Wheldon 1917)
- =Sphagnum acutifolium f. venustum Wheldon, Syn. Eur. Sphagna: 9. 1917. (Wheldon 1917)
- =Sphagnum acutifolium var. microcephalum Röll, Hedwigia 60: 47. 1918. (Röll 1918)
- =Sphagnum acutifolium var. laxum Bott., Atti Reale Accad. Lincei, Mem. Cl. Sci. Fis., ser. 5, 13(1): 25. 1919, nom. illeg. (Bottini 1919)
- =Sphagnum pulvinatum H.A. Crum, Cryptog. Bryol. Lichénol. 6: 183. 1985. (Crum 1985; Costa 2018)
Sphagnum carolinianum R.E. Andrus, Bryologist 86: 257. 1983. (Andrus 1983; Shaw et al. 2012)

≡Sphagnum subsecundum var. carolinianum (R.E. Andrus) H.A. Crum, N. Amer. Fl., ser. 2, 11: 65. 1984. (Crum 1984b)
Sphagnum cavernulosum Flatberg & Whinam, J. Bryol. 33(2): 107. 2011. (Flatberg et al. 2011; Michaelis 2019)
Sphagnum centrale C.E.O. Jensen, Bih. Kongl. Svenska Vetensk.-Akad. Handl. 21, Afd. 3(10): 34. 1896. (Arnell & Jensen 1896; Hodgetts et al. 2020)

Replaced synonym: Sphagnum papillosum var. intermedium Warnst., Hedwigia 30: 160. 1891. (Warnstorf 1891a)

≡Sphagnum intermedium (Warnst.) Russow, Arch. Naturk. Liv- Ehst- Kurlands, Ser. 2, Biol. Naturk. 10: 468. 1894, nom. illeg. (Russow 1894; Crum 1984b) ≡Sphagnum palustre var. centrale (C.E.O. Jensen) A. Eddy, Handb. Eur. Sphagna: 50. 1985. (Daniels & Eddy 1985)
- =Sphagnum centrale var. flavofuscescens Russow ex Warnst., Schriften Naturf. Ges. Danzig 9(2): 162. 1897. (Warnstorf 1897)
- =Sphagnum centrale var. fuscescens Warnst., Schriften Naturf. Ges. Danzig 9(2): 162. 1897. (Warnstorf 1897) ≡Sphagnum subbicolor var. fuscescens (Warnst.) Warnst., Krypt.-Fl. Brandenburg, Leber- & Torfm.: 333. 1903.
- =Sphagnum centrale var. fuscoflavescens Russow ex Warnst., Schriften Naturf. Ges. Danzig 9(2): 162. 1897. (Warnstorf 1897)
- =Sphagnum centrale var. glaucescens Russow ex Warnst., Schriften Naturf. Ges. Danzig 9(2): 162. 1897. (Warnstorf 1897)
- =Sphagnum centrale var. pallescens Warnst., Schriften Naturf. Ges. Danzig 9(2): 162. 1897. (Warnstorf 1897)
- =Sphagnum cymbifolium var. carneum Warnst., Verh. Bot. Vereins Prov. Brandenburg 41: 28. 1899. ≡Sphagnum centrale var. carneum (Warnst.) Zick., Bull. Soc. Imp. Naturalistes Moscou, n.s. 14: 282. 1900. (Zickendrath 1901; Wijk & Margadant 1965) ≡Sphagnum subbicolor var. carneum (Warnst.) Wijk & Margad., Taxon 14: 198. 1965. (Wijk & Margadant 1965)
- =Sphagnum centrale var. compactum Warnst., Bull. Soc. Imp. Naturalistes Moscou, n.s. 14: 282. 1900. (Zickendrath 1901)
- =Sphagnum subbicolor var. flavescens Warnst., Krypt.-Fl. Brandenburg, Leber- & Torfm.: 333. 1903. (Warnstorf 1902–1903)
- =Sphagnum subbicolor var. virescens Warnst., Krypt.-Fl. Brandenburg, Leber- & Torfm.: 333. 1903. (Warnstorf 1911)
- =Sphagnum subbicolor var. subcarneum Warnst., Krypt.-Fl. Brandenburg, Leber- & Torfm.: 334. 1903, nom. illeg. (Warnstorf 1902–1903) ≡Sphagnum centrale var. subcarneum (Warnst.) Warnst., Zprávy Komis. Přír. Výzk. Moravy Slezska Odděl. Bot. 5: 9. 1908, nom. illeg. (Wijk et al. 1967)
- =Sphagnum subbicolor f. glaucofuscescens Russow ex Warnst., Pflanzenr. 51: 482. 1911. (Warnstorf 1911)
- =Sphagnum subbicolor f. flavofuscescens Russow ex Warnst., Pflanzenr. 51: 482 (Sphagnol. Univ. 482). 1911. (Warnstorf 1911)
- =Sphagnum subbicolor var. brachycladum Röll ex Bott., Atti Soc. Tosc. Sci. Nat. Pisa Processi Verbali 24: 29. 1915. (Bottini 1915)
- =Sphagnum subbicolor var. submersum Röll, Hedwigia 64: 28. 1923. (Röll 1923a)
Sphagnum ceylonicum Mitt. ex Warnst., Hedwigia 29: 195. 1890. (Michaelis 2019)
- =Sphagnum ceylonicum var. brachycladum Warnst., Pflanzenr. 51: 134. 1911. (Warnstorf 1911; Eddy 1977a)
- =Sphagnum ceylonicum var. robustum Warnst., Pflanzenr. 51: 134. 1911. (Warnstorf 1911; Eddy 1977a)
- =Sphagnum kerstenii Hampe, Pflanzenr. 51: 135. 1911. (Warnstorf 1911; Eddy 1985)
- =Sphagnum keniae Dixon, Smithsonian Misc. Collect. 69(2): 7. 1918. (Dixon 1918; Eddy 1985)
- =Sphagnum vandenbroeckii Naveau, Natuurw. Tijdschr., Antwerp 4: 144. 1922. (Eddy 1985)
- =Sphagnum ugandense J. Taylor & A. Thomps., Kew Bull. 9(4): 517. 1954. (Eddy 1985)
Sphagnum chi-chiense H.A. Crum, J. Hattori Bot. Lab. 77: 236. 1994. (Crum 1994a; Michaelis 2019)
Sphagnum chi-chiense H.A. Crum var. chi-chiense
Sphagnum chi-chiense var. uvidulum H.A. Crum, J. Hattori Bot. Lab. 77: 237. 1994. (Crum 1994a; Costa 2021)
Sphagnum cleefii H.A. Crum, Bryologist 92: 100. 1989. (Crum 1989b; Michaelis 2019)
Sphagnum comosum Müll. Hal., Flora 70: 413. 1887. (Müller 1887; Karlin et al. 2008)
Sphagnum compactum DC., Fl. Franç. (ed. 3) 2: 443. 1805. (Lamarck & Candolle 1805; Hodgetts et al. 2020)

≡Sphagnum cymbifolium var. compactum (DC.) Schultz, Prodr. Fl. Starg. Suppl.: 64. 1819. ≡Sphagnum latifolium var. compactum (DC.) Spreng., Syst. Veg. [Sprengel] 4(1): 147. 1827. (Sprengel 1827) ≡Sphagnum obtusifolium var. compactum (DC.) Sw., Adnot. Bot.: 72. 1829. (Swartz 1829) ≡Sphagnum cymbifolium subsp. compactum (DC.) Hartm., Handb. Skand. Fl. (ed. 5): 403. 1849. (Hartman 1849) ≡Sphagnum rigidum var. compactum (DC.) Schimp., Mém. Hist. Nat. Sphaignes: 72. 1857, nom. illeg.
- =Sphagnum intermedium var. compactum Roth, Tent. Fl. Germ. 3(1): 120. 1800, nom. illeg. (Roth 1800; Michaelis 2019)
- =Sphagnum helveticum Schkuhr, Deutschl. Krypt. Gew. 2(1): 12. 1810. (Isoviita 1966)
- =Sphagnum obtusifolium var. minus Hook. & Taylor, Muscol. Brit.: 3. 1818. (Hooker & Taylor 1818; Michaelis 2019) ≡Sphagnum cymbifolium var. minus (Hook. & Taylor) Hampe, Flora 20: 287. 1837.
- =Sphagnum praemorsum Zenker & D. Dietr., Musci Thur. 1: 6 [no. 18]. 1821. (Zenker & Dietrich 1821–1825; Isoviita 1966) ≡Sphagnum compactum var. praemorsum (Zenker & D. Dietr.) Brid., Bryol. Univ. 1: 17. 1826. (Bridel 1826)
- =Sphagnum immersum Nees & Hornsch., Bryol. Germ. 1: 11. 1823. (Nees von Esenbeck et al. 1823; Crum 1984b) ≡Sphagnum rigidum var. immersum (Nees & Hornsch.) Hampe, Flora 20: 287. 1837, nom. illeg. ≡Sphagnum compactum var. immersum (Nees & Hornsch.) Rabenh., Deutschl. Krypt.-Fl. 2(3): 76. 1848.
- =Sphagnum compactum var. rigidum Nees & Hornsch., Bryol. Germ. 1: 14. 1823. (Nees von Esenbeck et al. 1823) ≡Sphagnum rigidum (Nees & Hornsch.) Hampe, Prodr. Fl. Hercyn.: 63. 1836. ≡Sphagnum compactum f. rigidum (Nees & Hornsch.) Pilous, Fl. ČSSR, C, Bryol. 1: 241. 1971. (Pilous 1971)
- =Sphagnum tristichum Schultz, Syll. Pl. Nov. 2: 120. 1828. (Schultz 1828; Crum 1984b)
- =Sphagnum ambiguum Huebener, Muscol. Germ.: 25. 1833. (Huebener 1833; Crum 1984b)
- =Sphagnum compactum var. robustum Müll. Hal., Syn. Musc. Frond. 1: 99. 1848. (Müller 1848) ≡Sphagnum rigidum var. robustum (Müll. Hal.) Cardot, Bull. Soc. Hist. Nat. Autun 10: 378 [Répert. Sphagnol. 146]. 1897. (Cardot 1897)
- =Sphagnum compactum var. elongatum I.G. Borshch. & G.G. Borshch., Musci Taimyr., Bogan. et Ochot.: 137. 1856[1855]. (Borshchow & Borshchow 1856)
- =Sphagnum rigidum var. daldinianum De Not., Erb. Crittog. Ital. 24: 157 (1157). 1864. (Bottini 1919)
- =Sphagnum rigidum var. squarrosum Russow, Arch. Naturk. Liv- Ehst- Kurlands, Ser. 2, Biol. Naturk. 7: 155. 1865. ≡Sphagnum compactum var. squarrosulum Limpr., Laubm. Deutschl. 1: 118. 1885, nom. illeg. (Limpricht 1885–1903) ≡Sphagnum compactum var. squarrosum (Russow) Warnst., Bot. Gaz. 15: 226. 1890. (Ochyra et al. 2003)
- =Sphagnum rigidum var. squarrosum Milde, Bryol. Siles.: 391. 1869, nom. illeg. (Ochyra et al. 2003)
- =Sphagnum rigidum [unranked] submersum Limpr., Bot. Centralbl. 7: 315. 1881. ≡Sphagnum compactum f. submersum (Limpr.) Limpr., Laubm. Deutschl. 1: 118. 1885. (Warnstorf 1911) ≡Sphagnum compactum var. submersum (Limpr.) Röll, Hedwigia 56: 84. 1915. (Röll 1915)
- =Sphagnum rigidum f. reflexum Warnst., Eur. Torfm. (Warnstorf): 100. 1881. ≡Sphagnum compactum f. reflexum (Warnst.) Warnst., Pflanzenr. 51: 148. 1911. (Warnstorf 1911)
- =Sphagnum rigidum f. strictum Warnst., Eur. Torfm. (Warnstorf): 100. 1881. ≡Sphagnum rigidum var. strictum (Warnst.) Röll, Flora 69: 329. 1886. ≡Sphagnum compactum var. strictum (Warnst.) Dalla Torre & Sarnth., Fl. Tirol 5: 102. 1902. ≡Sphagnum compactum f. strictum (Warnst.) Warnst., Pflanzenr. 51: 148. 1911. (Warnstorf 1911)
- =Sphagnum rigidum var. laxifolium Warnst., Flora 66: 377. 1883. (Wijk et al. 1967)
- =Sphagnum rigidum f. purpurascens Warnst., Hedwigia 23: 103. 1884. (Cardot 1886)
- =Sphagnum rigidum f. densum Schlieph. ex Röll, Flora 69: 329. 1886. (Warnstorf 1911) ≡Sphagnum compactum f. densum (Schlieph. ex Röll) Warnst., Pflanzenr. 51: 148. 1911, nom. illeg. ≡Sphagnum compactum var. densum (Schlieph. ex Röll) Röll, Hedwigia 56: 84. 1915, nom. illeg. (Röll 1915)
- =Sphagnum rigidum f. turgidum Röll, Flora 69: 329. 1886. ≡Sphagnum compactum var. turgidum (Röll) Röll, Hedwigia 36: 65. 1897. (Warnstorf 1911) ≡Sphagnum rigidum var. turgidum (Röll) Paris, Index Bryol. Suppl.: 311. 1900.
- =Sphagnum rigidum var. brachycladum Röll, Flora 69: 330. 1886. ≡Sphagnum compactum var. brachycladum (Röll) Bott., Webbia 4: 127. 1913. (Bottini 1913)
- =Sphagnum rigidum f. capitatum Röll, Flora 69: 330. 1886. ≡Sphagnum compactum var. capitatum (Röll) Röll, Hedwigia 56: 84. 1915. (Röll 1915)
- =Sphagnum rigidum f. densum Cardot ex Röll, Flora 69: 330. 1886. (Röll 1907b) ≡Sphagnum compactum f. densum (Cardot ex Röll) Röll, Hedwigia 46: 235. 1907.
- =Sphagnum rigidum var. gracile Schlieph. & Röll, Flora 69: 330. 1886. (Warnstorf 1911) ≡Sphagnum compactum var. gracile (Schlieph. & Röll) Dalla Torre & Sarnth., Fl. Tirol 5: 102. 1902.
- =Sphagnum rigidum f. laxum Cardot ex Röll, Flora 69: 330. 1886. ≡Sphagnum compactum var. laxum (Cardot ex Röll) Röll, Hedwigia 46: 235. 1907. (Röll 1907b)
- =Sphagnum compactum var. imbricatum Warnst., Bot. Gaz. 15: 226. 1890. (McQueen & Andrus 2007) ≡Sphagnum rigidum var. imbricatum (Warnst.) Cardot, Bull. Soc. Hist. Nat. Autun 10: 378 [Répert. Sphagnol. 146]. 1897. (Cardot 1897)
- =Sphagnum compactum var. subsquarrosum Warnst., Bot. Gaz. 15: 226. 1890. (Ochyra et al. 2003) ≡Sphagnum rigidum var. subsquarrosum (Warnst.) Renauld & Cardot, Rev. Bryol. 19: 67. 1892. (Renauld & Cardot 1892)
- =Sphagnum compactum var. cymbifolioides C.E.O. Jensen, Festskr. Bot. Foren. Kjøbenhavn: 82. 1890. ≡Sphagnum rigidum var. cymbifolioides (C.E.O. Jensen) Cardot, Bull. Soc. Hist. Nat. Autun 10: 378 [Répert. Sphagnol. 146]. 1897. (Cardot 1897)
- =Sphagnum compactum var. fuscum C.E.O. Jensen, Festskr. Bot. Foren. Kjøbenhavn: 82. 1890. ≡Sphagnum rigidum var. fuscum (C.E.O. Jensen) Cardot, Bull. Soc. Hist. Nat. Autun 10: 378 [Répert. Sphagnol. 146]. 1897. (Cardot 1897)
- =Sphagnum compactum var. viride C.E.O. Jensen, Festskr. Bot. Foren. Kjøbenhavn: 82. 1890. ≡Sphagnum rigidum var. viride (C.E.O. Jensen) Cardot, Bull. Soc. Hist. Nat. Autun 10: 378 [Répert. Sphagnol. 146]. 1897. (Cardot 1897)
- =Sphagnum compactum var. congestum Röll, Hedwigia 46: 235. 1907. (Röll 1907b)
- =Sphagnum compactum f. subsimplex Wheldon, Syn. Eur. Sphagna: 12. 1917. (Wheldon 1917; Röll 1917)
- =Sphagnum compactum f. flavescens Wheldon, Syn. Eur. Sphagna: 13. 1917. (Wheldon 1917)
- =Sphagnum compactum var. isophyllum Wheldon, Syn. Eur. Sphagna: 13. 1917. (Wheldon 1917)
Sphagnum complanatum Flatberg & Whinam, J. Bryol. 33(2): 112. 2011. (Flatberg et al. 2011; Michaelis 2019)
Sphagnum concinnum (Berggr.) Flatberg, Lindbergia 32: 88. 2007. (Flatberg 2007a; Michaelis 2019)

Basionym: Sphagnum teres var. concinnum Berggr., Kongl. Svenska Vetensk. Acad. Handl., n.s. 13(7): 94. 1875. (Berggren 1875)

≡Sphagnum fimbriatum var. concinnum (Berggr.) Warnst., Flora 66: 377. 1883. ≡Sphagnum fimbriatum subsp. concinnum (Berggr.) Flatberg & Frisvoll, J. Hattori Bot. Lab. 56: 308. 1984. (Flatberg & Frisvoll 1984a)
- =Sphagnum fimbriatum var. arcticum C.E.O. Jensen, Cat. Pl. Soc. Bot. Copenh., Adnot.: 23. 1883. (Jensen 1883; McQueen & Andrus 2007)
Sphagnum condensatum Brid., Muscol. Recent. 2(1): 26. 1798. (Bridel 1798; O'Shea 2006)

≡Sphagnum obtusifolium var. condensatum (Brid.) Sw., Adnot. Bot.: 72. 1829. (Swartz 1829) ≡Sphagnum acutifolium var. condensatum (Brid.) Lindb., Öfvers. Kongl. Vetensk.-Akad. Förh. 23: 559. 1867.
- =Sphagnum cymbifolium var. condensatum Hook. f. & Wilson, Fl. Antarct. 2: 398. 1847, nom. dub. (Müller 2009)
Sphagnum conflatum Müll. Hal. ex Warnst., Pflanzenr. 51: 391. 1911. (Warnstorf 1911; Michaelis 2019)
Sphagnum connectens Warnst. & Cardot, Bull. Herb. Boissier, sér. 2, 7: 711. 1907. (Cardot 1907; Michaelis 2019)
Sphagnum contortulum H.A. Crum, Bryologist 94: 301. 1991. (Crum 1991; Costa 2021)
Sphagnum contortum Schultz, Prodr. Fl. Starg. Suppl.: 64. 1819. (Schultz 1819; Hodgetts et al. 2020)

≡Sphagnum subsecundum var. contortum (Schultz) Huebener, Muscol. Germ.: 27. 1833. (Huebener 1833) ≡Sphagnum acutifolium var. contortum (Schultz) Hartm., Handb. Skand. Fl. (ed. 3) 2: 262. 1838. (Hartman 1838) ≡Sphagnum subsecundum subsp. contortum (Schultz) C. Hartm., Handb. Skand. Fl. (ed. 6): 436. 1854. (Hartman 1854) ≡Sphagnum cavifolium var. contortum (Schultz) Warnst., Flora 65: 550. 1882, nom. illeg. ≡Sphagnum cavifolium subsp. contortum (Schultz) Russow, Schriften Naturf.-Ges. Univ. Dorpat. 3: 29. 1887. (Russow 1887)
- =Sphagnum contortum var. albicans Bayrh., Jahrb. Vereins Naturk. Herzogth. Nassau 5: 36. 1849. (Bayrhoffer 1849)
- =Sphagnum contortum var. commune Bayrh., Jahrb. Vereins Naturk. Herzogth. Nassau 5: 36. 1849. (Bayrhoffer 1849)
- =Sphagnum contortum var. compactum Bayrh., Jahrb. Vereins Naturk. Herzogth. Nassau 5: 36. 1849. (Bayrhoffer 1849)
- =Sphagnum contortum var. elongatum Bayrh., Jahrb. Vereins Naturk. Herzogth. Nassau 5: 36. 1849. (Bayrhoffer 1849)
- =Sphagnum contortum var. rubrum Bayrh., Jahrb. Vereins Naturk. Herzogth. Nassau 5: 36. 1849. (Bayrhoffer 1849)
- =Sphagnum contortum var. subsecundum Bayrh., Jahrb. Vereins Naturk. Herzogth. Nassau 5: 36. 1849. (Bayrhoffer 1849)
- =Sphagnum contortum var. viridulum Bayrh., Jahrb. Vereins Naturk. Herzogth. Nassau 5: 36. 1849. (Bayrhoffer 1849)
- =Sphagnum contortum var. laricinum Wilson, Bryol. Brit.: 23. 1855. (Wilson 1855) ≡Sphagnum laricinum (Wilson) Spruce ex Lindb., Öfvers. Kongl. Vetensk.-Akad. Förh. 19: 142. 1862. (Lindberg 1862; Daniels & Eddy 1990) ≡Sphagnum recurvum var. laricinum (Wilson) Hobk., Syn. Brit. Mosses: 25. 1873. (Hobkirk 1873) ≡Sphagnum cavifolium var. laricinum (Wilson) Warnst., Eur. Torfm. (Warnstorf): 86. 1881, nom. illeg. (Warnstorf 1881) ≡Sphagnum cavifolium subsp. laricinum (Wilson) Warnst., Flora 65: 551. 1882, nom. illeg. ≡Sphagnum subsecundum subsp. laricinum (Wilson) Cardot, Bull. Soc. Roy. Bot. Belgique 25(1): 71, 112. 1886.
- =Sphagnum neglectum Ångstr., Öfvers. Kongl. Vetensk.-Akad. Förh. 21: 201. 1864. (Ångström 1864; Crum 1984b)
- =Sphagnum subsecundum var. isophyllum Russow, Beitr. Torfm.: 73. 1865. (Isoviita 1966) ≡Sphagnum isophyllum (Russow) Russow, Arch. Naturk. Liv- Ehst- Kurlands, Ser. 2, Biol. Naturk. 10: 391, 415. 1894. (Russow 1894)
- =Sphagnum curvifolium Wilson, Mem. Lit. Soc. Manchester ser. 3, 3: 233. 1868. (Michaelis 2019)
- =Sphagnum cavifolium f. strictum Grav. ex Warnst., Eur. Torfm. (Warnstorf): 83. 1881. ≡Sphagnum subsecundum f. strictum (Grav. ex Warnst.) Cardot, Bull. Soc. Roy. Bot. Belgique 25: 112. 1886. ≡Sphagnum rufescens var. strictum (Grav. ex Warnst.) Cardot, Bull. Soc. Hist. Nat. Autun 10: 388 [Répert. Sphagnol. 156]. 1897. (Cardot 1897) ≡Sphagnum contortum var. strictum (Grav. ex Warnst.) Röll, Hedwigia 56: 90. 1915. (Röll 1915)
- =Sphagnum cavifolium f. gracile Warnst., Eur. Torfm. (Warnstorf): 91. 1881. ≡Sphagnum cavifolium var. gracilie (Warnst.) Warnst., Flora 65: 551. 1882. ≡Sphagnum laricinum var. gracile (Warnst.) Husn., Sphagnol. Eur.: 10. 1882. ≡Sphagnum contortum var. gracile (Warnst.) Warnst., Samml. Eur. Torfm. 3: no. 285, 286. 1892, nom. illeg. (Wijk et al. 1967) ≡Sphagnum subsecundum var. gracile (Warnst.) Hérib., Mém. Acad. Sci. Clermont-Ferrand, sér. 2, 14: 453. 1899, nom. illeg.
- =Sphagnum laricinum f. fluitans C.E.O. Jensen, Cat. Pl. Soc. Bot. Copenh., Adnot.: 23. 1883. (Jensen 1883; Warnstorf 1911) ≡Sphagnum laricinum var. fluitans (C.E.O. Jensen) Warnst., Flora 67: 602. 1884. ≡Sphagnum subsecundum var. fluitans (C.E.O. Jensen) Cardot, Bull. Soc. Roy. Bot. Belgique 25(1): 72, 113. 1886, nom. illeg. ≡Sphagnum platyphyllum var. fluitans (C.E.O. Jensen) Cardot, Bull. Soc. Hist. Nat. Autun 10: 357 [Répert. Sphagnol. 125]. 1897, nom. illeg. (Cardot 1897)
- =Sphagnum laricinum var. crispulum Schlieph., Hedwigia 23: 101. 1884. (Warnstorf 1884b) ≡Sphagnum subsecundum var. crispulum (Schlieph.) Cardot, Bull. Soc. Roy. Bot. Belgique 25(1): 112. 1886, nom. illeg. (Cardot 1886) ≡Sphagnum contortum var. crispulum (Schlieph.) Paris, Index Bryol. (ed. 2) 4: 266. 1905. (Paris 1904-1906; Warnstorf 1911) ≡Sphagnum contortum f. crispulum (Schlieph.) Warnst., Pflanzenr. 51: 377. 1911.
- =Sphagnum laricinum var. falcatum Schlieph. ex Warnst., Hedwigia 23: 101. 1884. (Warnstorf 1884b; Warnstorf 1911) ≡Sphagnum contortum var. falcatum (Schlieph. ex Warnst.) Paris, Index Bryol. (ed. 2) 4: 267. 1905, nom. illeg. (Paris 1904-1906) ≡Sphagnum contortum f. falcatum (Schlieph. ex Warnst.) Warnst., Pflanzenr. 51: 376. 1911, nom. illeg.
- =Sphagnum laricinum var. tenellum Röll, Flora 69: 336. 1886. (Cardot 1897)
- =Sphagnum laricinum var. laxum Röll, Flora 69: 337. 1886. (Cardot 1897)
- =Sphagnum contortum f. heterophyllum Röll, Flora 69: 360. 1886. ≡Sphagnum contortum var. heterophyllum (Röll) Röll, Allg. Bot. Z. Syst. 13: 201. 1907. (Röll 1907a)
- =Sphagnum contortum f. fuscum Röll, Flora 69: 362. 1886. (Röll 1886c)
- =Sphagnum contortum f. robustum Röll, Flora 69: 363. 1886. (Röll 1886c)
- =Sphagnum laricinum var. natans Schiffn., Lotos 35: 70. 1887. (Schiffner & Schmidt 1887)
- =Sphagnum contortum f. aquaticum C.E.O. Jensen, Festskr. Bot. Foren. Kjøbenhavn: 76. 1890. ≡Sphagnum laricinum var. aquaticum (C.E.O. Jensen) Röll, Hedwigia 56: 94. 1915. (Röll 1915)
- =Sphagnum contortum var. fuscum C.E.O. Jensen, Festskr. Bot. Foren. Kjøbenhavn: 76. 1890, nom. illeg. (Wijk et al. 1967)
- =Sphagnum contortum var. luteofuscescens C.E.O. Jensen, Festskr. Bot. Foren. Kjøbenhavn: 76. 1890. (Jensen 1890)
- =Sphagnum contortum var. majus C.E.O. Jensen, Festskr. Bot. Foren. Kjøbenhavn: 76. 1890. (Warnstorf 1911)
- =Sphagnum contortum var. reinkei Russow, Arch. Naturk. Liv- Ehst- Kurlands, Ser. 2, Biol. Naturk. 10: 34. 1894. (Russow 1894; Warnstorf 1911) ≡Sphagnum contortum f. reinkei (Russow) Warnst., Pflanzenr. 51: 375. 1911.
- =Sphagnum laricinum var. congestum C.E.O. Jensen ex Warnst., Hedwigia 23: 102. 1894. (Warnstorf 1884b) ≡Sphagnum contortum var. congestum (C.E.O. Jensen ex Warnst.) Paris, Index Bryol. (ed. 2) 4: 266. 1905. (Paris 1904-1906)
- =Sphagnum contortum var. natans Schiffn., Sitzungsber. Deutsch. Naturwiss.-Med. Vereins Böhmen "Lotos" Prag 44: 276. 1896. (Schiffner 1896)
- =Sphagnum laricinum var. patulum Röll, Hedwigia 36: 329. 1897. (Röll 1897a)
- =Sphagnum neglectum var. molluscum Röll, Hedwigia 36: 63. 1897. (Röll 1896)
- =Sphagnum contortum var. robustum Warnst., Verh. Bot. Vereins Prov. Brandenburg 41: 33. 1899, nom. illeg. (Warnstorf 1911)
- =Sphagnum contortum var. cuspidatum Röll, Hedwigia 42(Beibl.): 28. 1903. (Röll 1903a)
- =Sphagnum contortum var. capitatum Röll, Hedwigia 46: 241. 1907. (Röll 1907b)
- =Sphagnum falcifolium G. Roth, Hedwigia 47: 327. 1908. (Michaelis 2019) ≡Sphagnum laricinum var. falcifolium (G. Roth) Röll, Allg. Bot. Z. Syst. 17: 21. 1911.
- =Sphagnum falcifolium var. gracile G. Roth, Hedwigia 47: 327. 1908. (Roth 1908)
- =Sphagnum artariae Warnst., Pflanzenr. 51: 350. 1911. (Crum 1984b) ≡Sphagnum subsecundum subsp. artariae (Warnst.) Bott., Atti Reale Accad. Lincei, Mem. Cl. Sci. Fis., ser. 5, 13(1): 22. 1919.
- =Sphagnum contortum var. permagnum Warnst., Pflanzenr. 51: 375, 526. 1911. (Warnstorf 1911)
- =Sphagnum contortum subf. densum Warnst., Pflanzenr. 51: 376. 1911. ≡Sphagnum laricinum var. densum (Warnst.) Bott., Atti Reale Accad. Lincei, Mem. Cl. Sci. Fis., ser. 5, 13(1): 66. 1919. (Bottini 1919)
- =Sphagnum contortum var. microphyllum Warnst., Pflanzenr. 51: 376 (Sphagnol. Univ. 376). 1911, nom. illeg. (Warnstorf 1911; Wijk et al. 1967)
- =Sphagnum contortum var. sibiricum C.E.O. Jensen, Ark. Bot. 13(2): 24. 1913. (Arnell 1913)
- =Sphagnum laricinum var. capitatum Röll ex Bott., Webbia 4: 128. 1913. (Bottini 1913)
- =Sphagnum laricinum var. squarrosulum Röll ex Bott., Webbia 4: 129. 1913. (Bottini 1913)
- =Sphagnum contortum var. pseudobesum Röll, Hedwigia 60: 46. 1918. (Röll 1918)
- =Sphagnum laricinum var. plumosum Bott., Atti Reale Accad. Lincei, Mem. Cl. Sci. Fis., ser. 5, 13(1): 67. 1919. (Bottini 1919)
- =Sphagnum contortum var. densum Röll, Hedwigia 64: 211. 1923, nom. illeg. (Röll 1923b)
- =Sphagnum contortum var. limosum Röll, Hedwigia 64: 211. 1923. (Röll 1923b)
Sphagnum costae H.A. Crum, Cryptog. Bryol. Lichénol. 15: 111. 1994. (Crum & Costa 1994; Costa 2021)
- =Sphagnum costae var. confertorameum H.A. Crum & D.P. Costa, Cryptog. Bryol. Lichénol. 15: 112. 1994. (Crum & Costa 1994; Costa 2021)
- =Sphagnum costae var. seriatum H.A. Crum & D.P. Costa, Cryptog. Bryol. Lichénol. 15: 114. 1994. (Crum & Costa 1994; Costa 2021)
†Sphagnum crassiangulatum Griazeva, Trudy Vsesojuzn. Naučno-Issl. Geol. Razved. Inst. 239: 109. 1964. (Griazeva 1964)
Sphagnum cribriforme H.A. Crum, Bryologist 96: 458. 1993. (Crum 1993b; Michaelis 2019)

Replaced synonym: Sphagnum perforatum var. rotundifolium Warnst., Hedwigia 34: 130. 1895. (Brotherus 1895)
Sphagnum cribrosum Lindb., Eur. Hvitmoss.: 74. 1882. (Lindberg 1882; Michaelis 2019)
- =Sphagnum macrophyllum var. floridanum Austin, Bull. Torrey Bot. Club 7: 15. 1880. ≡Sphagnum floridanum (Austin) Cardot, Bull. Soc. Roy. Bot. Belgique 26(1): 60. 1887. (McQueen & Andrus 2007)
Sphagnum cristatum Hampe, Linnaea 38: 661. 1874. (Hampe 1874; Michaelis 2019)
- =Sphagnum wilcoxii Müll. Hal., Flora 70: 407. 1887. (Müller 1887; McCarthy 2006)
- =Sphagnum leionotum Müll. Hal., Flora 70: 408. 1887. (Müller 1887; McCarthy 2006)
- =Sphagnum whiteleggei Müll. Hal., Flora 70: 408. 1887. (Müller 1887; McCarthy 2006)
- =Sphagnum australe Schimp., Bot. Gaz. 15: 250. 1890, nom. illeg. (McCarthy 2006) ≡Sphagnum maximum Warnst., Hedwigia 30: 160. 1891. (Warnstorf 1891a; McCarthy 2006)
- =Sphagnum pseudomedium Warnst., Hedwigia 30: 164. 1891. (Warnstorf 1891a; Michaelis 2019)
- =Sphagnum microcephalum Müll. Hal., Hedwigia 39: 106. 1900. (Wijk et al. 1967)
- =Sphagnum dielsianum Warnst., Beih. Bot. Centralbl. 16: 249. 1904. (Wijk et al. 1967)
- =Sphagnum otagoense Warnst., Beih. Bot. Centralbl. 16: 250. 1904. (Wijk et al. 1967)
- =Sphagnum decipiens Warnst., Hedwigia 47: 78. 1907. (McCarthy 2006)
- =Sphagnum cymbophylloides Warnst., Hedwigia 47: 79. 1907. (Wijk et al. 1967)
- =Sphagnum decipiens var. obovatum Warnst., Hedwigia 47: 79. 1907. (Streimann & Klazenga 2002)
- =Sphagnum decipiens var. rotundatum Warnst., Hedwigia 47: 79. 1907. (Streimann & Klazenga 2002)
- =Sphagnum wardellense Warnst., Hedwigia 47: 81. 1907. (McCarthy 2006)
- =Sphagnum maximum var. squarrosulum Warnst., Pflanzenr. 51: 459. 1911. (Warnstorf 1911)
Sphagnum crumii Schäf.-Verw., Nova Hedwigia 67: 410. 1998. (Schäfer-Verwimp 1998; Costa 2021)
Sphagnum cuculliforme H.A. Crum, Contr. Univ. Michigan Herb. 16: 141. 1987. (Crum 1987a; Michaelis 2019)
Sphagnum cundinamarcanum H.A. Crum, Contr. Univ. Michigan Herb. 20: 129. 1995. (Crum 1995a; Michaelis 2019)
Sphagnum curicuriariense H.A. Crum & W.R. Buck, Brittonia 44: 458. 1992. (Crum & Buck 1992; Costa 2021)
Sphagnum curvatulum H.A. Crum, J. Hattori Bot. Lab. 74: 145. 1993. (Crum 1993a; Michaelis 2019)
Sphagnum curvatulum H.A. Crum var. curvatulum
Sphagnum curvatulum var. steereanum H.A. Crum, Bryologist 98: 589. 1995. (Crum 1995d; Michaelis 2019)

Replaced synonym: Sphagnum steerei H.A. Crum, J. Hattori Bot. Lab. 74: 148. 1993, nom. illeg. (Crum 1993a; Crum 1995d)
Sphagnum cuspidatulum Müll. Hal., Linnaea 38: 549. 1874. (Müller 1874a; Michaelis 2019)
- =Sphagnum rufulum Müll. Hal., Linnaea 38: 548. 1874. (Müller 1874a; Eddy 1977a)
- =Sphagnum malaccense Warnst., Hedwigia 31: 175. 1892. (Eddy 1977a) ≡Sphagnum cuspidatulum var. malaccense (Warnst.) Warnst., Pflanzenr. 51: 187. 1911. (Warnstorf 1911) ≡Sphagnum cuspidatum var. malaccense (Warnst.) Dixon, Gard. Bull. Straits Settlem., ser. 3, 4: 2. 1926. (Dixon 1926) ≡Sphagnum cuspidatum var. malaccense (Warnst.) Wijk & Margad., Taxon 14: 198. 1965, nom. illeg. (Wijk & Margadant 1965)
- =Sphagnum acutum Warnst., Allg. Bot. Z. Syst. 1: 136. 1895. (Eddy 1977a)
- =Sphagnum cuspidatulum var. fibrosum Warnst., Pflanzenr. 51: 187. 1911. (Warnstorf 1911; Michaelis 2019)
- =Sphagnum cuspidatulum var. fuscescens Warnst., Pflanzenr. 51: 188. 1911. (Warnstorf 1911; Michaelis 2019)
- =Sphagnum acutum var. hakusanense Warnst., Pflanzenr. 51: 192. 1911. (Warnstorf 1911; Suzuki 2016)
Sphagnum cuspidatum Ehrh. ex Hoffm., Deutschl. Fl. 2: 22. 1795[1796]. (Hoffmann 1796; Michaelis 2019)

≡Sphagnum capillifolium var. cuspidatum (Ehrh. ex Hoffm.) Brid., Muscol. Recent. 2(1): 26. 1798. (Bridel 1798) ≡Sphagnum palustre var. cuspidatum (Ehrh. ex Hoffm.) Lilj., Utkast Sv. Fl. (ed. 2): 393. 1798. (Liljeblad 1798) ≡Sphagnum capillaceum var. cuspidatum (Ehrh. ex Hoffm.) Wahlenb., Fl. Lapp.: 381. 1812. (Wahlenberg 1812) ≡Sphagnum acutifolium var. cuspidatum (Ehrh. ex Hoffm.) Brid., Bryol. Univ. 1: 822. 1827, nom. illeg. (Bridel 1827a) ≡Sphagnum recurvum subsp. cuspidatum (Ehrh. ex Hoffm.) C. Hartm., Handb. Skand. Fl. (ed. 9) 2: 83. 1864, nom. illeg. (Hartman 1864) ≡Sphagnum variabile var. cuspidatum (Ehrh. ex Hoffm.) Warnst., Eur. Torfm. (Warnstorf): 69. 1881, nom. illeg. (Warnstorf 1881) ≡Sphagnum variabile subsp. cuspidatum (Ehrh. ex Hoffm.) Warnst., Flora 55: 550. 1882, nom. illeg.
- =Sphagnum alpinum Schrank, Baier. Fl. 2: 435. 1789. (Schrank 1789; Wijk et al. 1967)
- =Sphagnum cuspidatum var. plumosum Nees & Hornsch., Bryol. Germ. 1: 24. 1823. (Nees von Esenbeck et al. 1823) ≡Sphagnum laxifolium Müll. Hal., Syn. Musc. Frond. 1: 97. 1848. (Müller 1848; Crum 1984b) ≡Sphagnum cuspidatum var. laxifolium (Müll. Hal.) Austin, Amer. J. Sci. Arts, ser. 2, 35(104): 255. 1863, nom. illeg. ≡Sphagnum cuspidatum subsp. laxifolium (Müll. Hal.) Lindb., Eur. Hvitmoss.: 69. 1882. (Lindberg 1882) ≡Sphagnum recurvum var. plumosum (Nees & Hornsch.) Cardot, Bull. Soc. Roy. Bot. Belgique 25(1): 101, 119. 1886. (Cardot 1886)
- =Sphagnum cuspidatiforme Breutel, Flora 7: 437. 1824. (Crum 1984b)
- =Sphagnum cuspidatum var. hypnoides A. Braun ex Bruch, Flora 8: 629. 1825. ≡Sphagnum hypnoides (A. Braun ex Bruch) Brid., Bryol. Univ. 1: 752. 1827. (Bridel 1827a; Crum 1984b) ≡Sphagnum laxifolium var. hypnoides (A. Braun ex Bruch) Müll. Hal., Syn. Musc. Frond. 1: 98. 1848. (Müller 1848)
- =Sphagnum cuspidatum var. fluitans Fiedl., Syn. Laubm. Mecklenb.: 34. 1844. (Fiedler 1844)
- =Sphagnum cuspidatum var. immersum Schimp., Mém. Hist. Nat. Sphaignes: 16. 1857, nom. illeg. (Wijk et al. 1967)
- =Sphagnum cuspidatum var. submersum Schimp., Mém. Hist. Nat. Sphaignes: 67. 1857. (Ireland, Jr. et al. 1987) ≡Sphagnum variabile var. submersum (Schimp.) Warnst., Flora 65: 550. 1882. ≡Sphagnum recurvum var. submersum (Schimp.) Cardot, Bull. Soc. Roy. Bot. Belgique 25(1): 100, 119. 1886, nom. illeg. (Cardot 1886)
- =Sphagnum cuspidatum var. plumulosum Schimp., Mém. Hist. Nat. Sphaignes: 68. 1857. (Warnstorf 1911) ≡Sphagnum variabile var. plumulosum (Schimp.) Warnst., Sphagnoth. Eur. 3: no. 118. 1883. ≡Sphagnum recurvum f. plumulosum (Schimp.) Cardot, Bull. Soc. Roy. Bot. Belgique 25: 119. 1886. ≡Sphagnum laxifolium var. plumulosum (Schimp.) C.E.O. Jensen, Festskr. Bot. Foren. Kjøbenhavn: 106. 1890.
- =Sphagnum cuspidatum var. plumosum Austin, Amer. J. Sci. Arts, ser. 2, 35(104): 255. 1863, nom. illeg. (Austin 1863)
- =Sphagnum cuspidatum var. falcatum Russow, Arch. Naturk. Liv- Ehst- Kurlands, Ser. 2, Biol. Naturk. 7: 137. 1865. ≡Sphagnum variabile var. falcatum (Russow) Warnst., Flora 65: 550. 1882. ≡Sphagnum recurvum var. falcatum (Russow) Cardot, Bull. Soc. Roy. Bot. Belgique 25(1): 100, 119. 1886, nom. illeg. (Cardot 1886) ≡Sphagnum laxifolium var. falcatum (Russow) Röll, Flora 69: 235. 1886. ≡Sphagnum falcatum (Russow) Limpr., Laubm. Deutschl. 1: 626. 1888. (Limpricht 1885–1903; Greene 1986)
- =Sphagnum laxifolium var. comosum Schlieph., Verh. K.K. Zool.-Bot. Ges. Wien 15: 397. 1865. (Warnstorf 1911)
- =Sphagnum laxifolium var. polyphyllum Schlieph., Verh. K.K. Zool.-Bot. Ges. Wien 15: 397. 1865. (Warnstorf 1911) ≡Sphagnum cuspidatum var. polyphyllum (Schlieph.) Schlieph., Irmischia 2: 66. 1882. (Schliephacke 1882) ≡Sphagnum recurvum f. polyphyllum (Schlieph.) Cardot, Bull. Soc. Roy. Bot. Belgique 25: 119. 1886. ≡Sphagnum cuspidatum subf. polyphyllum (Schlieph.) Warnst., Pflanzenr. 51: 265. 1911.
- =Sphagnum variabile Warnst., Verh. Bot. Vereins Prov. Brandenburg 22: 72. 1881, nom. illeg.
- =Sphagnum variabile f. monocladon H. Klinggr. ex Warnst., Hedwigia 21: 2. 1882. ≡Sphagnum cuspidatum var. monocladon (H. Klinggr. ex Warnst.) Warnst., Verh. Bot. Vereins Prov. Brandenburg 32: 208. 1891. ≡Sphagnum laxifolium var. monocladon (H. Klinggr. ex Warnst.) H. Klinggr., Leber- Laubm. W.-Ostpreuss.: 94. 1893. (Klinggräff 1893) ≡Sphagnum monocladon (H. Klinggr. ex Warnst.) Warnst., Verh. Bot. Vereins Prov. Brandenburg 42: 70. 1900. (Crum 1984b) ≡Sphagnum obesum var. klinggraeffii H.K.G. Paul, Rev. Bryol., n.s. 2: 145. 1930. ≡Sphagnum gravetii f. monocladon (H. Klinggr. ex Warnst.) L.I. Savicz, Fl. Sporov. Rast. SSSR 1: 143. 1952.
- =Sphagnum cuspidatum f. pumilum Grav. ex Warnst., Hedwigia 23: 125. 1884. (Warnstorf 1911) ≡Sphagnum cuspidatum subf. pumilum (Grav. ex Warnst.) Warnst., Pflanzenr. 51: 266. 1911.
- =Sphagnum cuspidatum var. tenellum Warnst., Hedwigia 23: 125. 1884. (Warnstorf 1884b) ≡Sphagnum schliephackei var. tenellum (Warnst.) Röll, Hedwigia 56: 71. 1915. (Röll 1915)
- =Sphagnum intermedium f. laxum Röll, Flora 69: 231. 1886. ≡Sphagnum pseudomolluscum var. laxum (Röll) Röll, Hedwigia 56: 70. 1915. (Röll 1915)
- =Sphagnum cuspidatum var. recurvum Röll, Flora 69: 232. 1886, nom. illeg. (Cardot 1897)
- =Sphagnum cuspidatum var. dimorphum Röll, Flora 69: 233. 1886. (Cardot 1897)
- =Sphagnum cuspidatum var. macrophyllum Röll, Flora 69: 233. 1886. (Cardot 1897)
- =Sphagnum cuspidatum var. majus Schlieph. & Röll, Flora 69: 233. 1886, nom. illeg. ≡Sphagnum schliephackei var. majus Röll, Hedwigia 56: 71. 1915. (Röll 1915)
- =Sphagnum cuspidatum var. robustum Röll, Flora 69: 233. 1886. ≡Sphagnum riparium var. robustum (Röll) Loeske, Moosfl. Harz.: 112. 1903. (Loeske 1903) ≡Sphagnum schliephackei var. robustum (Röll) Röll, Hedwigia 56: 71. 1915. (Röll 1915)
- =Sphagnum cuspidatum var. flagellare Röll, Flora 69: 234. 1886. (Cardot 1897)
- =Sphagnum cuspidatum var. rigidulum Röll, Flora 69: 234. 1886. (Cardot 1897)
- =Sphagnum laxifolium f. acutifolium Röll, Flora 69: 235. 1886. ≡Sphagnum cuspidatum var. acutifolium (Röll) Röll, Hedwigia 56: 72. 1915. (Röll 1915)
- =Sphagnum laxifolium f. stellare Röll, Flora 69: 236. 1886. ≡Sphagnum cuspidatum var. stellare (Röll) Röll, Hedwigia 46: 225. 1907. (Röll 1907b)
- =Sphagnum laxifolium f. strictum Röll, Flora 69: 236. 1886. ≡Sphagnum cuspidatum var. strictum (Röll) Röll, Hedwigia 46: 225. 1907, nom. illeg. (Röll 1907b)
- =Sphagnum cuspidatum f. molle Warnst., Verh. Bot. Vereins Prov. Brandenburg 32: 207. 1891. (Warnstorf 1911)
- =Sphagnum lonchophyllum Müll. Hal., Hedwigia 36: 152. 1897. (Yano 1996)
- =Sphagnum subundulatum Müll. Hal. & Warnst., Hedwigia 36: 152. 1897. (Yano 1996)
- =Sphagnum cuspidatum Renauld, Prodr. Fl. Bryol. Madagascar: 277. 1897, nom. illeg. (Renauld 1897; Eddy 1985)
- =Sphagnum bernieri Besch. ex Renauld & Cardot, Hist. Phys. Madagascar, Mousses: Atlas 2: 142. 1899. (Renauld & Cardot 1898–1913; Eddy 1985)
- =Sphagnum virginianum Warnst., Hedwigia 39: 101. 1900. (Crum 1984b)
- =Sphagnum ikongense Warnst., Magyar Bot. Lapok 1: 46. 1902. (Eddy 1985)
- =Sphagnum cuspidatum var. krausei C.E.O. Jensen, Meddel. Grønland 30: 312. 1906. (Jensen 1906)
- =Sphagnum intermedium var. flagellare Röll, Hedwigia 46: 221. 1907. ≡Sphagnum schliephackei var. flagellare (Röll) Röll, Hedwigia 56: 71. 1915. (Röll 1915)
- =Sphagnum schliephackei var. capitatum Röll, Hedwigia 46: 222. 1907. (Röll 1907b)
- =Sphagnum schliephackei var. falcatum Röll, Hedwigia 46: 222. 1907. (Röll 1907b)
- =Sphagnum schliephackei var. recurvum Röll, Hedwigia 46: 222. 1907. (Röll 1907b)
- =Sphagnum aloysii-sabaudiae G. Negri, Ann. Bot. (Rome) 7: 161. 1908. (Eddy 1985)
- =Sphagnum faxonii Warnst., Hedwigia 47: 117. 1908. (Crum 1984b)
- =Sphagnum faxonii var. crispatulum Warnst., Pflanzenr. 51: 231. 1911. (Warnstorf 1911)
- =Sphagnum lehmannii Warnst., Pflanzenr. 51: 232. 1911. (Warnstorf 1911; Griffin III 1981)
- =Sphagnum pusillum Warnst., Pflanzenr. 51: 259. 1911. (Warnstorf 1911; Wijk et al. 1967)
- =Sphagnum gabonense Besch., Pflanzenr. 51: 269. 1911. (Warnstorf 1911; Eddy 1985)
- =Sphagnum cuspidatum var. deflexum Röll, Hedwigia 51: 100. 1911, nom. illeg. (Röll 1911b)
- =Sphagnum pseudomolluscum Röll, Allg. Bot. Z. Syst. 19: 171. 1913, nom. dub. (Michaelis 2019)
- =Sphagnum lehmannii var. equiporosum Irmsch., Mém. Soc. Sci. Nat. Neuchâtel 5: 997. 1914. (Florschütz-de Waard & Florschütz 1979)
- =Sphagnum schliephackei var. pulchrum Röll, Hedwigia 56: 71. 1915. (Röll 1915)
- =Sphagnum stollei Röll, Hedwigia 56: 74. 1915, nom. dub. (Röll 1915; Michaelis 2019)
- =Sphagnum stollei var. flagellare Röll, Hedwigia 56: 75. 1915. (Röll 1915)
- =Sphagnum stollei var. molle Röll, Hedwigia 56: 75. 1915. (Röll 1915)
- =Sphagnum stollei var. robustum Röll, Hedwigia 56: 75. 1915. (Röll 1915)
- =Sphagnum pseudomolluscum var. patulum Röll, Hedwigia 59: 294. 1917. (Röll 1917)
- =Sphagnum schliephackei Röll, Hedwigia 59: 294. 1917, nom. illeg. (Wijk et al. 1967)
- =Sphagnum pseudomolluscum var. submersum Röll, Hedwigia 60: 13, 16. 1918. (Röll 1918)
- =Sphagnum pseudomolluscum var. falcatum Röll, Hedwigia 60: 16. 1918. (Röll 1918)
- =Sphagnum pseudomolluscum var. densum Röll, Hedwigia 60: 25. 1918. (Röll 1918)
- =Sphagnum schliephackei var. imbricatum Röll, Hedwigia 60: 32. 1918. (Röll 1918)
- =Sphagnum cuspidatum var. limosum Röll, Hedwigia 60: 41. 1918. (Röll 1918)
- =Sphagnum cuspidatum var. macrocephalum Röll, Hedwigia 60: 42. 1918. (Röll 1918)
- =Sphagnum cuspidatum var. microcephalum Röll, Hedwigia 60: 48. 1918. (Röll 1918)
- =Sphagnum cuspidatum var. tenellum Röll, Hedwigia 60: 48. 1918, nom. illeg. (Röll 1918)
- =Sphagnum cuspidatum var. flagellare Bott., Atti Reale Accad. Lincei, Mem. Cl. Sci. Fis., ser. 5, 13(1): 41. 1919, nom. illeg. (Bottini 1919)
- =Sphagnum pseudomolluscum var. crispulum Röll, Hedwigia 64: 207, 216. 1923. (Röll 1923b)
- =Sphagnum pseudomolluscum var. compactum Röll, Hedwigia 64: 216. 1923. (Röll 1923b)
- =Sphagnum pseudomolluscum var. molluscum Röll, Hedwigia 64: 216. 1923. (Röll 1923b)
- =Sphagnum torreyanum var. densum Röll, Hedwigia 64: 223. 1923. (Röll 1923b)
- =Sphagnum cuspidatum var. septiculatum Åberg, Meddel. Värmlands Naturhist. Fören. 4: 20. 1933. (Åberg 1933)
- =Sphagnum bohemicum Jež., Preslia 26: 143. 1954. (Ježek 1954; Corley et al. 1981)
Sphagnum cuspidatum Ehrh. ex Hoffm. subsp. cuspidatum
Sphagnum cuspidatum Ehrh. ex Hoffm. var. cuspidatum
Sphagnum cuspidatum var. serrulatum (Schlieph.) Schlieph., Irmischia 2: 67. 1882. (Schliephacke 1882; Michaelis 2019)

Basionym: Sphagnum laxifolium var. serrulatum Schlieph., Verh. K.K. Zool.-Bot. Ges. Wien 15: 397. 1865. (Schliephacke 1865)

≡Sphagnum serratum var. serrulatum (Schlieph.) Warnst., Pflanzenr. 51: 247. 1911. (Warnstorf 1911) ≡Sphagnum cuspidatum f. serrulatum (Schlieph.) Pilous, Fl. ČSSR, C, Bryol. 1: 278. 1971. (Pilous 1971)
- =Sphagnum longifolium Saut., Flora 35: 580. 1852. (Michaelis 2019)
- =Sphagnum cuspidatum var. truncatum Schlieph. ex Cardot, Bull. Soc. Roy. Bot. Belgique 25: 101. 1886. (Warnstorf 1911)
- =Sphagnum sordidum Müll. Hal. ex Warnst., Bot. Jahrb. Syst. 27: 251. 1899, nom. dub. (Michaelis 2019)
- =Sphagnum trinitense var. crispulum Röll, Hedwigia 46: 225. 1907. ≡Sphagnum pseudoserratum var. crispulum (Röll) Röll, Hedwigia 51: 101. 1911. (Röll 1911b)
- =Sphagnum trinitense var. plumulosum Röll, Hedwigia 46: 226. 1907. ≡Sphagnum pseudoserratum var. plumulosum (Röll) Röll, Hedwigia 51: 101. 1911. (Röll 1911b)
- =Sphagnum sordidum var. humile Warnst., Pflanzenr. 51: 246. 1911. (Warnstorf 1911)
- =Sphagnum pseudoserratum Röll, Hedwigia 51: 100. 1911. (Michaelis 2019)
- =Sphagnum pseudoserratum var. plumosum Röll, Hedwigia 51: 101. 1911. (Röll 1911b)
- =Sphagnum pseudoserratum var. submersum Röll, Hedwigia 51: 101. 1911. (Röll 1911b)
Sphagnum cuspidatum subsp. subrecurvum (Warnst.) A. Eddy, Bull. Brit. Mus. (Nat. Hist.), Bot. 5: 413. 1977. (Eddy 1977a; Michaelis 2019)

Basionym: Sphagnum subrecurvum Warnst., Allg. Bot. Z. Syst. 1: 134. 1895. (Eddy 1977a)

≡Sphagnum cuspidatum var. subrecurvum (Warnst.) A. Eddy, Bull. Brit. Mus. (Nat. Hist.), Bot. 5: 413. 1977. (Eddy 1977a)
- =Sphagnum seemannii Müll. Hal., J. Mus. Godeffroy 3(6): 56. 1874. (Eddy 1977a)
- =Sphagnum weberi Warnst., Hedwigia 29: 217. 1890. (Warnstorf 1890d; Michaelis 2019) ≡Sphagnum seemannii var. weberi (Warnst.) Warnst., Pflanzenr. 51: 224. 1911. (Warnstorf 1911)
- =Sphagnum recurviforme Warnst., Allg. Bot. Z. Syst. 1: 116. 1895. (Eddy 1977a)
- =Sphagnum javanicum Warnst., Hedwigia 47: 120. 1907. (Eddy 1977a) ≡Sphagnum subrecurvum var. javanicum (Warnst.) Warnst., Pflanzenr. 51: 263. 1911. (Warnstorf 1911)
- =Sphagnum subrecurvum var. borneense Dixon, J. Linn. Soc., Bot. 50: 66. 1935. (Dixon 1935; Michaelis 2019)
- =Sphagnum cuspidatulum var. trengganense A. Johnson, Gard. Bull. Singapore 17(2): 316. 1959. (Johnson 1959; Michaelis 2019)
- =Sphagnum flaccidifolium Dixon ex A. Johnson, Gard. Bull. Singapore 17: 316. 1959. (Johnson 1959; Michaelis 2019) ≡Sphagnum cuspidatum var. flaccidifolium (Dixon ex A. Johnson) A. Eddy, Bull. Brit. Mus. (Nat. Hist.), Bot. 5: 416. 1977. (Eddy 1977a)
Sphagnum cuspidatum var. viride (Flatberg) Lönnell & K. Hassel, Phytotaxa 369(1): 57. 2018. (Lönnell & Hassel 2018; Hodgetts et al. 2020)

Basionym: Sphagnum viride Flatberg, Kongel. Norske Vidensk. Selsk. Skr. (Trondheim) 1988(1): 9. 1988. (Flatberg 1988c; Lönnell & Hassel 2018)
Sphagnum cyclocladum Warnst., Bot. Jahrb. Syst. 27: 257. 1899. (Michaelis 2019)
Sphagnum cyclophyllum Sull. & Lesq., Manual (ed. 2): 611. 1856. (Sullivant 1856; McQueen & Andrus 2007)

Replaced synonym: Sphagnum cymbifolium var. turgidum Wilson & Hook., Musci Amer., S. States: no. 17. 1841, nom. illeg. (Wilson & Hooker 1841)

≡Sphagnum laricinum var. cyclophyllum (Sull. & Lesq.) Lindb., Contr. Fl. Crypt. As.: 280. 1872[1873]. (Lindberg 1872) ≡Sphagnum rigidum var. cyclophyllum (Sull. & Lesq.) Husn., Sphagnol. Eur.: 6. 1882. ≡Sphagnum subsecundum var. cyclophyllum (Sull. & Lesq.) Dixon, Stud. Handb. Brit. Mosses: 13. 1896. (Dixon 1896)
- =Sphagnum caldense Müll. Hal., Bot. Zeitung (Berlin) 20: 327. 1862. (Crum 1984b)
- =Sphagnum caldense var. normale Hampe, Vidensk. Meddel. Dansk Naturhist. Foren. Kjøbenhavn ser. 3, 6: 130. 1875. (Crum 1984b)
- =Sphagnum caldense var. scorpioides Hampe, Vidensk. Meddel. Dansk Naturhist. Foren. Kjøbenhavn ser. 3, 6: 130. 1875. ≡Sphagnum scorpioides (Hampe) H.A. Crum, Fragm. Florist. Geobot. 40: 173. 1995. (Crum 1995b; Costa 2021)
Sphagnum davidii Warnst., Allg. Bot. Z. Syst. 11: 99. 1905. (Michaelis 2019)
- =Sphagnum davidii var. brachydasycladum Warnst., Wiss. Ergebn. Deut. Zentr.-Afr. Exped., Bot. 2: 135. 1910. (Brotherus 1910; Eddy 1985)
- =Sphagnum chevalieri Warnst., Pflanzenr. 51: 311. 1911. (Warnstorf 1911; Eddy 1985)
- =Sphagnum davidii var. flavofuscescens Warnst., Pflanzenr. 51: 383. 1911. (Warnstorf 1911; Eddy 1985)
- =Sphagnum davidii var. viride Warnst., Pflanzenr. 51: 383. 1911. (Warnstorf 1911; Eddy 1985)
- =Sphagnum afrocrassicladum Dixon & Sherrin, J. Bot. 76: 218. 1938. (Dixon 1938; Eddy 1985)
Sphagnum delamboyense Schäf.-Verw., Nova Hedwigia 67: 412. 1998. (Schäfer-Verwimp 1998; Costa 2021)
Sphagnum denticulatum Brid., Bryol. Univ. 1: 10. 1826. (Bridel 1826; Dirkse & Isoviita 1986)

≡Sphagnum subsecundum var. turgidum Müll. Hal., Syn. Musc. Frond. 1: 101. 1848. (Müller 1848) ≡Sphagnum contortum var. denticulatum (Brid.) Dozy & Molk., Ned. Kruidk. Arch. 2: 112. 1850. ≡Sphagnum subsecundum var. denticulatum (Brid.) Dozy & Molk., Prodr. Fl. Bat. 2(1): 76. 1851. ≡Sphagnum contortum var. turgidum (Müll. Hal.) Warnst., Flora 67: 600. 1884. ≡Sphagnum subsecundum f. turgidum (Müll. Hal.) Cardot, Bull. Soc. Roy. Bot. Belgique 25: 112. 1886. ≡Sphagnum turgidum (Müll. Hal.) Röll, Flora 69: 366. 1886, nom. illeg. ≡Sphagnum rufescens var. turgidum (Müll. Hal.) Warnst., Krypt.-Fl. Brandenburg, Leber- & Torfm.: 466. 1903. (Warnstorf 1902–1903) ≡Sphagnum aquatile var. turgidum (Müll. Hal.) Warnst., Pflanzenr. 51: 343. 1911. (Warnstorf 1911) ≡Sphagnum subsecundum subsp. turgidum (Müll. Hal.) Bott., Atti Reale Accad. Lincei, Mem. Cl. Sci. Fis., ser. 5, 13(1): 22. 1919. (Bottini 1919)
- =Sphagnum contortum var. rufescens Nees & Hornsch., Bryol. Germ. 1: 15. 1823. (Nees von Esenbeck et al. 1823) ≡Sphagnum squarrosum var. rufescens (Nees & Hornsch.) Brid., Bryol. Univ. 2: 823. 1827. (Bridel 1827b) ≡Sphagnum subsecundum var. rufescens (Nees & Hornsch.) Huebener, Muscol. Germ.: 26. 1833. (Huebener 1833) ≡Sphagnum cavifolium f. rufescens (Nees & Hornsch.) Warnst., Sphagnoth. Eur. 2: no. 63. 1882. ≡Sphagnum turgidum var. rufescens (Nees & Hornsch.) Röll, Flora 69: 368. 1886. ≡Sphagnum rufescens (Nees & Hornsch.) Warnst., Hedwigia 27: 267. 1888. (Ignatov & Afonina 1992) ≡Sphagnum subsecundum subsp. rufescens (Nees & Hornsch.) Meyl., Bull. Soc. Vaud. Sci. Nat. 41: 72. 1905. ≡Sphagnum lescurii var. rufescens (Nees & Hornsch.) Düll, Bryol. Beitr. 4: 11. 1984. (Düll 1984) ≡Sphagnum denticulatum var. rufescens (Nees & Hornsch.) Plăm., Fl. Briol. Româiei Cl. Musci 1(1): 70. 1998. (Plămadă 1998)
- =Sphagnum subsecundum var. fluitans Hampe, Prodr. Fl. Bat. 2(1): 76. 1851. (Jansen & Wachter 1943)
- =Sphagnum contortum var. obesum Wilson, Bryol. Brit.: 22. 1855. (Wilson 1855) ≡Sphagnum subsecundum var. obesum (Wilson) Schimp., Syn. Musc. Eur. (ed. 2): 844. 1876. (Schimper 1876) ≡Sphagnum cavifolium var. obesum (Wilson) Warnst., Flora 65: 550. 1882, nom. illeg. ≡Sphagnum obesum (Wilson) Warnst., Bot. Gaz. 15: 247. 1890. (Brugués et al. 2007) ≡Sphagnum platyphyllum var. obesum (Wilson) Bom. & Broth., Herb. Mus. Fenn. (ed. 2), Musci: 20. 1894. (Bomansson & Brotherus 1894) ≡Sphagnum subsecundum subsp. obesum (Wilson) Hérib., Mém. Acad. Sci. Clermont-Ferrand, sér. 2, 14: 453. 1899. ≡Sphagnum turgidum var. obesum (Wilson) Röll, Hedwigia 56: 92. 1915. (Röll 1915) ≡Sphagnum crassicladum var. obesum (Wilson) Jansen & Wacht., Ned. Kruidk. Arch. 53: 207. 1943.
- =Sphagnum auriculatum Schimp., Mém. Hist. Nat. Sphaignes: 79. 1857. (Corley & Crundwell 1991) ≡Sphagnum subsecundum var. auriculatum (Schimp.) Schlieph., Verh. K.K. Zool.-Bot. Ges. Wien 15: 411. 1865. ≡Sphagnum cavifolium var. auriculatum (Schimp.) Warnst., Flora 65: 550. 1882, nom. illeg. ≡Sphagnum contortum var. auriculatum (Schimp.) Warnst., Flora 67: 601. 1884. ≡Sphagnum subsecundum f. auriculatum (Schimp.) Cardot, Bull. Soc. Roy. Bot. Belgique 25: 112. 1886. ≡Sphagnum rufescens var. auriculatum (Schimp.) Cardot, Bull. Soc. Hist. Nat. Autun 10: 387 [Répert. Sphagnol. 155]. 1897. (Cardot 1897) ≡Sphagnum subsecundum subsp. auriculatum (Schimp.) Meyl., Bull. Soc. Vaud. Sci. Nat. 41: 72. 1905. ≡Sphagnum denticulatum var. auriculatum (Schimp.) Plăm., Fl. Briol. Româiei Cl. Musci 1(1): 70. 1998. (Plămadă 1998)
- =Sphagnum cymbifolium var. tenellum C. Hartm., Handb. Skand. Fl. (ed. 7): 398. 1858, nom. illeg. (Hartman 1858; Wijk et al. 1967)
- =Sphagnum subsecundum var. simplicissimum Milde, Bryol. Siles.: 393. 1869. ≡Sphagnum rufescens var. simplicissimum (Milde) Cardot, Bull. Soc. Hist. Nat. Autun 10: 387 [Répert. Sphagnol. 155]. 1897. (Cardot 1897)
- =Sphagnum subsecundum var. viride Boulay, Fl. Crypt. Est, Musc.: 713. 1872. ≡Sphagnum rufescens var. viride (Boulay) Cardot, Bull. Soc. Hist. Nat. Autun 10: 388 [Répert. Sphagnol. 156]. 1897. (Cardot 1897)
- =Sphagnum cavifolium f. fluitans Grav. ex Warnst., Eur. Torfm. (Warnstorf): 84. 1881. ≡Sphagnum cavifolium var. contortum-fluitans Warnst., Sphagnoth. Eur. 3: no. 122. 1883. (Warnstorf 1911) ≡Sphagnum subsecundum var. fluitans (Grav. ex Warnst.) Cardot, Bull. Soc. Roy. Bot. Belgique 25(1): 68, 112. 1886, nom. illeg. ≡Sphagnum contortum var. fluitans (Grav. ex Warnst.) Röll, Flora 69: 363. 1886. ≡Sphagnum aquatile var. fluitans (Grav. ex Warnst.) Röll, Hedwigia 46: 241. 1907. ≡Sphagnum crassicladum f. fluitans (Grav. ex Warnst.) Warnst., Pflanzenr. 51: 388. 1911. (Warnstorf 1911)
- =Sphagnum cavifolium f. squarrosulum Grav. ex Warnst., Eur. Torfm. (Warnstorf): 84. 1881. ≡Sphagnum subsecundum var. squarrosulum (Grav. ex Warnst.) Husn., Sphagnol. Eur.: 8. 1882. ≡Sphagnum cavifolium var. contortum-squarrosulum Warnst., Sphagnoth. Eur. 3: no. 125. 1883. (Warnstorf 1911) ≡Sphagnum contortum var. squarrosulum (Grav. ex Warnst.) Warnst., Hedwigia 23: 100. 1884. ≡Sphagnum subsecundum f. squarrosulum (Grav. ex Warnst.) Cardot, Bull. Soc. Roy. Bot. Belgique 25: 112. 1886. ≡Sphagnum rufescens var. squarrosulum (Grav. ex Warnst.) Cardot, Bull. Soc. Hist. Nat. Autun 10: 388 [Répert. Sphagnol. 156]. 1897. (Cardot 1897) ≡Sphagnum turgidum var. squarrosulum (Grav. ex Warnst.) Bott., Atti Reale Accad. Lincei, Mem. Cl. Sci. Fis., ser. 5, 13(1): 64. 1919.
- =Sphagnum subsecundum var. obesum-denudatum Husn., Sphagnol. Eur.: 8. 1882. ≡Sphagnum obesum var. denudatum Cardot, Bull. Soc. Hist. Nat. Autun 10: 343 [Répert. Sphagnol. 111]. 1897, nom. illeg. (Cardot 1897)
- =Sphagnum cavifolium f. plumosum Warnst., Sphagnoth. Eur. 2: no. 62. 1882. ≡Sphagnum subsecundum var. obesum-plumosum Husn., Sphagnol. Eur.: 8. 1882. ≡Sphagnum subsecundum f. plumosum (Warnst.) Cardot, Bull. Soc. Roy. Bot. Belgique 25: 69, 127. 1886. ≡Sphagnum turgidum var. plumosum (Warnst.) Röll, Flora 69: 367. 1886. ≡Sphagnum obesum var. plumosum (Warnst.) Cardot, Bull. Soc. Hist. Nat. Autun 10: 343 [Répert. Sphagnol. 111]. 1897. (Cardot 1897) ≡Sphagnum turgidum var. laxum Röll, Hedwigia 56: 92. 1915. (Röll 1915)
- =Sphagnum cavifolium var. contortum-obesum Warnst., Sphagnoth. Eur. 3: no. 120. 1883. (Warnstorf 1911)
- =Sphagnum cavifolium var. contortum-albescens Warnst., Sphagnoth. Eur. 3: no. 123. 1883. (Warnstorf 1911)
- =Sphagnum cavifolium var. contortum-auriculatum Warnst., Sphagnoth. Eur. 3: no. 124. 1883. (Warnstorf 1911)
- =Sphagnum cavifolium var. contortum-beckmannii Warnst., Sphagnoth. Eur. 3: no. 126. 1883. (Wijk et al. 1967)
- =Sphagnum cavifolium var. contortum-rufescens Warnst., Sphagnoth. Eur. 3: no. 127. 1883. (Warnstorf 1911)
- =Sphagnum cavifolium var. contortum-brachycladum Warnst., Sphagnoth. Eur. 3: no. 129. 1883. (Warnstorf 1911)
- =Sphagnum subsecundum var. algerianum Cardot, Rev. Bryol. 11: 54. 1884. (Cardot 1884; Eddy 1985) ≡Sphagnum contortum var. algerianum (Cardot) Warnst., Flora 67: 601. 1884. ≡Sphagnum rufescens var. algerianum (Cardot) Cardot, Bull. Soc. Hist. Nat. Autun 10: 387 [Répert. Sphagnol. 155]. 1897. (Cardot 1897)
- =Sphagnum contortum var. albescens Warnst., Hedwigia 23: 100. 1884. (Warnstorf 1884b) ≡Sphagnum subsecundum f. albescens (Warnst.) Cardot, Bull. Soc. Roy. Bot. Belgique 25: 111. 1886. ≡Sphagnum subsecundum var. albescens (Warnst.) Warnst., Festskr. Bot. Foren. Kjøbenhavn: 75. 1890. ≡Sphagnum rufescens var. albescens (Warnst.) Cardot, Bull. Soc. Hist. Nat. Autun 10: 387 [Répert. Sphagnol. 155]. 1897. (Cardot 1897)
- =Sphagnum contortum var. brachycladum Warnst., Hedwigia 23: 101. 1884. (Warnstorf 1884b) ≡Sphagnum subsecundum f. brachycladum (Warnst.) Cardot, Bull. Soc. Roy. Bot. Belgique 25: 111. 1886. ≡Sphagnum rufescens var. brachycladum (Warnst.) Cardot, Bull. Soc. Hist. Nat. Autun 10: 387 [Répert. Sphagnol. 155]. 1897. (Cardot 1897)
- =Sphagnum contortum var. deflexum Grav. ex Warnst., Hedwigia 23: 101. 1884. (Warnstorf 1884b) ≡Sphagnum subsecundum f. deflexum (Grav. ex Warnst.) Cardot, Bull. Soc. Roy. Bot. Belgique 25: 112. 1886. ≡Sphagnum rufescens var. deflexum (Grav. ex Warnst.) Cardot, Bull. Soc. Hist. Nat. Autun 10: 387 [Répert. Sphagnol. 155]. 1897. (Cardot 1897)
- =Sphagnum contortum var. beckmannii Warnst., Hedwigia: 23. 1884. ≡Sphagnum subsecundum var. beckmannii (Warnst.) Warnst. ex C.E.O. Jensen, Festskr. Bot. Foren. Kjøbenhavn: 75. 1890. ≡Sphagnum rufescens var. beckmannii (Warnst.) Cardot, Bull. Soc. Hist. Nat. Autun 10: 387 [Répert. Sphagnol. 155]. 1897. (Cardot 1897) ≡Sphagnum aquatile var. beckmannii (Warnst.) Warnst., Pflanzenr. 51: 344. 1911. (Warnstorf 1911)
- =Sphagnum subsecundum var. camusii Cardot, Bull. Soc. Roy. Bot. Belgique 25(1): 69, 111. 1886. ≡Sphagnum inundatum var. camusii (Cardot) G. Roth, Eur. Torfm. (Roth): 63. 1906. (Roth 1906) ≡Sphagnum camusii (Cardot) Warnst., Pflanzenr. 51: 394. 1911. (Warnstorf 1911; Michaelis 2019)
- =Sphagnum subsecundum var. insolitum Cardot, Bull. Soc. Roy. Bot. Belgique 25(1): 69, 112. 1886. ≡Sphagnum turgidum var. insolitum (Cardot) Röll, Flora 69: 367. 1886. ≡Sphagnum obesum var. insolitum (Cardot) Cardot, Bull. Soc. Hist. Nat. Autun 10: 343 [Répert. Sphagnol. 111]. 1897. (Cardot 1897; Warnstorf 1911)
- =Sphagnum subsecundum f. rufescens Warnst. ex Cardot, Bull. Soc. Roy. Bot. Belgique 25: 111. 1886, nom. illeg. (Cardot 1897)
- =Sphagnum subsecundum f. rufescens Warnst. ex Cardot, Bull. Soc. Roy. Bot. Belgique 25: 112. 1886, nom. illeg. (Cardot 1886)
- =Sphagnum subsecundum f. compactum Warnst. ex Cardot, Bull. Soc. Roy. Bot. Belgique 25: 66, 111. 1886. ≡Sphagnum contortum var. compactum (Warnst. ex Cardot) Warnst., Flora 69: 360. 1886, nom. illeg. ≡Sphagnum rufescens var. compactum (Warnst. ex Cardot) Cardot, Bull. Soc. Hist. Nat. Autun 10: 387 [Répert. Sphagnol. 155]. 1897. (Cardot 1897)
- =Sphagnum subsecundum var. bernetii Cardot, Bull. Soc. Roy. Bot. Belgique 25: 69, 111. 1886. ≡Sphagnum rufescens var. bernetti (Cardot) G. Roth, Eur. Torfm. (Roth): 68. 1906. (Roth 1906) ≡Sphagnum pseudoturgidum var. bernetii (Cardot) Röll, Hedwigia 46: 240. 1907.
- =Sphagnum subsecundum var. abbreviatum Röll, Flora 69: 355. 1886. (Warnstorf 1911)
- =Sphagnum subsecundum var. fallax Röll, Flora 69: 358. 1886. ≡Sphagnum pseudoturgidum var. fallax (Röll) Röll, Hedwigia 46: 240. 1907. (Röll 1907b)
- =Sphagnum subsecundum var. imbricatum Röll, Flora 69: 358. 1886. ≡Sphagnum pseudoturgidum var. imbricatum (Röll) Röll, Hedwigia 46: 240. 1907. (Röll 1907b)
- =Sphagnum subsecundum var. natans Schlieph. ex Röll, Flora 69: 358. 1886. ≡Sphagnum pseudoturgidum var. natans (Schlieph. ex Röll) Röll, Hedwigia 46: 240. 1907. (Röll 1907b)
- =Sphagnum subsecundum var. cuspidatum Röll, Flora 69: 359. 1886. ≡Sphagnum pseudoturgidum var. cuspidatum (Röll) Röll, Hedwigia 46: 240. 1907. (Röll 1907b)
- =Sphagnum contortum var. gracile Röll, Flora 69: 360. 1886. ≡Sphagnum rufescens var. gracile (Röll) Cardot, Bull. Soc. Hist. Nat. Autun 10: 387 [Répert. Sphagnol. 155]. 1897. (Cardot 1897) ≡Sphagnum cupressiforme var. gracile (Röll) Röll, Hedwigia 56: 87. 1915. (Röll 1915) ≡Sphagnum inundatum var. gracile (Röll) Röll, Hedwigia 56: 88. 1915, nom. illeg. (Röll 1915) ≡Sphagnum subsecundum var. gracile (Röll) Bott., Atti Reale Accad. Lincei, Mem. Cl. Sci. Fis., ser. 5, 13(1): 57. 1919, nom. illeg.
- =Sphagnum contortum var. tenellum Röll, Flora 69: 360. 1886. ≡Sphagnum rufescens var. tenellum (Röll) Cardot, Bull. Soc. Hist. Nat. Autun 10: 388 [Répert. Sphagnol. 156]. 1897. (Cardot 1897)
- =Sphagnum contortum var. abbreviatum Röll, Flora 69: 361. 1886. ≡Sphagnum rufescens var. abbreviatum (Röll) Cardot, Bull. Soc. Hist. Nat. Autun 10: 387 [Répert. Sphagnol. 155]. 1897. (Cardot 1897) ≡Sphagnum cornutum var. abbreviatum (Röll) G. Roth, Eur. Torfm. (Roth): 70. 1906. (Roth 1906)
- =Sphagnum contortum var. laxum Röll, Flora 69: 361. 1886, nom. illeg. ≡Sphagnum rufescens var. laxum Cardot, Bull. Soc. Hist. Nat. Autun 10: 387 [Répert. Sphagnol. 155]. 1897. (Cardot 1897) ≡Sphagnum inundatum var. auriculatum G. Roth, Eur. Torfm. (Roth): 62. 1906.
- =Sphagnum contortum var. ambiguum Röll, Flora 69: 362. 1886. ≡Sphagnum rufescens var. ambiguum (Röll) Cardot, Bull. Soc. Hist. Nat. Autun 10: 387 [Répert. Sphagnol. 155]. 1897. (Cardot 1897)
- =Sphagnum contortum var. teretiusculum Röll, Flora 69: 362. 1886. ≡Sphagnum rufescens var. teretiusculum (Röll) Cardot, Bull. Soc. Hist. Nat. Autun 10: 388 [Répert. Sphagnol. 156]. 1897. (Cardot 1897) ≡Sphagnum inundatum var. teretiusculum (Röll) Röll, Hedwigia 56: 88. 1915. (Röll 1915) ≡Sphagnum subsecundum var. teretiusculum (Röll) Bott., Atti Reale Accad. Lincei, Mem. Cl. Sci. Fis., ser. 5, 13(1): 57. 1919, nom. illeg.
- =Sphagnum contortum f. turgescens Röll, Flora 69: 363. 1886. ≡Sphagnum contortum var. turgescens (Röll) Röll, Hedwigia 46: 241. 1907. ≡Sphagnum turgidum var. turgescens (Röll) Bott., Atti Reale Accad. Lincei, Mem. Cl. Sci. Fis., ser. 5, 13(1): 64. 1919. (Bottini 1919)
- =Sphagnum contortum var. warnstorfii Röll, Flora 69: 364. 1886, nom. illeg. (Wijk et al. 1967)
- =Sphagnum contortum var. corniculatum Röll, Flora 69: 365. 1886. ≡Sphagnum rufescens var. corniculatum (Röll) Cardot, Bull. Soc. Hist. Nat. Autun 10: 387 [Répert. Sphagnol. 155]. 1897. (Cardot 1897) ≡Sphagnum auriculatum var. corniculatum (Röll) Röll, Hedwigia 46: 241. 1907. (Röll 1907b)
- =Sphagnum contortum var. cymbifolium Röll, Flora 69: 365. 1886. ≡Sphagnum rufescens var. cymbifolium (Röll) Cardot, Bull. Soc. Hist. Nat. Autun 10: 387 [Répert. Sphagnol. 155]. 1897. (Cardot 1897)
- =Sphagnum contortum var. revolvens Röll, Flora 69: 365. 1886. ≡Sphagnum rufescens var. revolvens (Röll) Cardot, Bull. Soc. Hist. Nat. Autun 10: 387 [Répert. Sphagnol. 155]. 1897. (Cardot 1897)
- =Sphagnum contortum var. rigidum Schlieph. ex Röll, Flora 69: 365. 1886. ≡Sphagnum rufescens var. rigidum (Schlieph. ex Röll) Cardot, Bull. Soc. Hist. Nat. Autun 10: 387 [Répert. Sphagnol. 155]. 1897. (Cardot 1897) ≡Sphagnum auriculatum var. rigidum (Schlieph. ex Röll) Röll, Hedwigia 46: 241. 1907. (Röll 1907b)
- =Sphagnum contortum var. subauriculatum Buyss. ex Röll, Flora 69: 366. 1886. ≡Sphagnum rufescens var. subauriculatum (Buyss. ex Röll) Cardot, Bull. Soc. Hist. Nat. Autun 10: 388 [Répert. Sphagnol. 156]. 1897. (Cardot 1897)
- =Sphagnum turgidum var. compactum Röll, Flora 69: 367. 1886. (Cardot 1897)
- =Sphagnum turgidum var. gracile Warnst. ex Röll, Flora 69: 367. 1886. (Cardot 1897)
- =Sphagnum turgidum f. robustum Röll, Flora 69: 367. 1886. ≡Sphagnum turgidum var. robustum (Röll) Röll, Hedwigia 60: 15, 18. 1918. (Röll 1918)
- =Sphagnum turgidum var. albescens Röll, Flora 69: 368. 1886. (Warnstorf 1911)
- =Sphagnum turgidum var. fuscoater Röll, Flora 69: 368. 1886. (Wijk et al. 1967)
- =Sphagnum turgidum var. fuscoviride Röll, Flora 69: 368. 1886. (Warnstorf 1911)
- =Sphagnum turgidum var. heterophyllum Röll, Flora 69: 368. 1886. (Warnstorf 1911)
- =Sphagnum turgidum var. sanguineum Röll, Flora 69: 368. 1886. (Warnstorf 1911)
- =Sphagnum crassicladum Warnst., Bot. Centralbl. 40: 165. 1889. (Michaelis 2019) ≡Sphagnum subsecundum var. crassicladum (Warnst.) C.E.O. Jensen, Bot. Faeröes 1: 139. 1901. ≡Sphagnum subsecundum subsp. crassicladum (Warnst.) J.J. Amann, Fl. Mouss. Suisse 1: 197. 1918. (Amann & Meylan 1918)
- =Sphagnum contortum var. lindbergii Röll, Bot. Centralbl. 46: 409. 1891. ≡Sphagnum rufescens var. lindbergii (Röll) Cardot, Bull. Soc. Hist. Nat. Autun 10: 387 [Répert. Sphagnol. 155]. 1897. (Cardot 1897)
- =Sphagnum crassicladum var. fluctuans Warnst., Samml. Eur. Torfm. 3: no. 299, 300. 1892. (Warnstorf 1911) ≡Sphagnum crassicladum f. fluctuans (Warnst.) Warnst., Pflanzenr. 51: 387. 1911.
- =Sphagnum gravetii Russow, Arch. Naturk. Liv- Ehst- Kurlands, Ser. 2, Biol. Naturk. 10: 392, 423. 1894. (Russow 1894; Brugués et al. 2007) ≡Sphagnum subsecundum var. gravetii (Russow) C.E.O. Jensen, Bot. Faeröes 1: 139. 1901.
- =Sphagnum flavicans Warnst., Allg. Bot. Z. Syst. 1: 205. 1895. (Michaelis 2011)
- =Sphagnum batumense Warnst., Schriften Naturf. Ges. Danzig 9(2): 160. 1896. (Ignatov & Afonina 1992) ≡Sphagnum rufescens var. batumense (Warnst.) Warnst., Krypt.-Fl. Brandenburg, Leber- & Torfm.: 465. 1903. (Warnstorf 1902–1903)
- =Sphagnum rufescens var. warnstorfii Cardot, Bull. Soc. Hist. Nat. Autun 10: 388 [Répert. Sphagnol. 156]. 1897. (Cardot 1897; Wijk et al. 1967)
- =Sphagnum aquatile Warnst., Verh. Bot. Vereins Prov. Brandenburg 41: 31. 1899. (Michaelis 2019) ≡Sphagnum rufescens var. aquatile (Warnst.) Warnst., Krypt.-Fl. Brandenburg, Leber- & Torfm.: 465. 1903. (Warnstorf 1902–1903) ≡Sphagnum inundatum var. aquatile (Warnst.) H.K.G. Paul, Süsswasserflora (ed. 2) 14: 12. 1931.
- =Sphagnum auriculatum var. ovatum Warnst., Krypt.-Fl. Brandenburg, Leber- & Torfm.: 460. 1903. (Warnstorf 1902–1903)
- =Sphagnum turgidulum Warnst., Krypt.-Fl. Brandenburg, Leber- & Torfm.: 462. 1903. (Warnstorf 1902–1903; Michaelis 2019) ≡Sphagnum subsecundum subsp. turgidulum (Warnst.) J.J. Amann, Fl. Mouss. Suisse 1: 197. 1918. (Amann & Meylan 1918)
- =Sphagnum turgidulum var. immersum Warnst., Krypt.-Fl. Brandenburg, Leber- & Torfm.: 463. 1903. (Warnstorf 1902–1903)
- =Sphagnum auriculatum var. stellatum G. Roth, Eur. Torfm. (Roth): 66. 1906. (Roth 1906)
- =Sphagnum turgidum G. Roth, Eur. Torfm. (Roth): 66. 1906, nom. illeg. (Roth 1906; Isoviita 1966)
- =Sphagnum rufescens var. fulvum G. Roth, Eur. Torfm. (Roth): 68. 1906. (Roth 1906) ≡Sphagnum turgidulum var. fulvum (G. Roth) Warnst., Pflanzenr. 51: 410. 1911. (Warnstorf 1911)
- =Sphagnum cornutum G. Roth, Eur. Torfm. (Roth): 69. 1906. (Roth 1906; Ignatov & Afonina 1992)
- =Sphagnum cupressiforme Röll, Hedwigia 46: 239. 1907. (Michaelis 2019)
- =Sphagnum pseudoturgidum Röll, Hedwigia 46: 239. 1907, nom. dub. (Warnstorf 1911)
- =Sphagnum pseudoturgidum var. contortum Röll, Hedwigia 46: 239. 1907. (Röll 1907b)
- =Sphagnum pseudoturgidum var. falcatum Röll, Hedwigia 46: 240. 1907. (Röll 1907b)
- =Sphagnum pseudoturgidum var. laxum Röll, Hedwigia 46: 240. 1907. (Röll 1907b)
- =Sphagnum turgidum var. brachycladum Röll, Hedwigia 46: 241. 1907. (Röll 1907b)
- =Sphagnum obesum var. laxum Röll, Hedwigia 46: 242. 1907. (Röll 1907b)
- =Sphagnum turgidum var. cymbifolium Röll, Hedwigia 46: 242. 1907. (Röll 1907b)
- =Sphagnum turgidum var. stellatum G. Roth, Hedwigia 46: 242. 1907. (Wijk et al. 1967)
- =Sphagnum alabamae Warnst., Hedwigia 47: 94. 1907. (Michaelis 2011)
- =Sphagnum cupressiforme Röll, Oesterr. Bot. Z. 57(3): 103. 1907, nom. illeg. (Ignatov & Afonina 1992)
- =Sphagnum cornutum var. laxifolium G. Roth, Hedwigia 47: 328. 1908. (Roth 1908)
- =Sphagnum gravetii var. immersum G. Roth, Hedwigia 47: 328. 1908. (Roth 1908)
- =Sphagnum gravetii var. laxum G. Roth, Hedwigia 47: 328. 1908. (Roth 1908)
- =Sphagnum turgidulum var. macrophyllum Warnst., Pflanzenr. 51: 283. 1911. (Warnstorf 1911)
- =Sphagnum holtii Warnst., Pflanzenr. 51: 300. 1911, nom. dub. (Warnstorf 1911; Michaelis 2019)
- =Sphagnum holtii var. subcrispulum Warnst., Pflanzenr. 51: 300. 1911. (Warnstorf 1911)
- =Sphagnum obesum var. luxurians Warnst., Pflanzenr. 51: 302. 1911. (Warnstorf 1911) ≡Sphagnum subsecundum var. luxurians (Warnst.) Bott., Atti Reale Accad. Lincei, Mem. Cl. Sci. Fis., ser. 5, 13(1): 65. 1919.
- =Sphagnum obesum var. natans Warnst., Pflanzenr. 51: 302. 1911. (Warnstorf 1911)
- =Sphagnum obesum var. macrocephalum Warnst., Pflanzenr. 51: 303. 1911. (Warnstorf 1911)
- =Sphagnum obesum var. mastigocladum Warnst., Pflanzenr. 51: 303. 1911. (Warnstorf 1911)
- =Sphagnum obesum var. sanguineum Warnst., Pflanzenr. 51: 303. 1911. (Warnstorf 1911) ≡Sphagnum subsecundum var. sanguineum (Warnst.) Bott., Atti Reale Accad. Lincei, Mem. Cl. Sci. Fis., ser. 5, 13(1): 65. 1919.
- =Sphagnum obesum var. teretiramosum Warnst., Pflanzenr. 51: 303. 1911. (Warnstorf 1911) ≡Sphagnum subsecundum var. teretiramosum (Warnst.) Bott., Atti Reale Accad. Lincei, Mem. Cl. Sci. Fis., ser. 5, 13(1): 65. 1919.
- =Sphagnum obesum var. brachycladum Warnst., Pflanzenr. 51: 304. 1911. (Warnstorf 1911)
- =Sphagnum obesum var. canovirens Warnst., Pflanzenr. 51: 304. 1911. (Warnstorf 1911)
- =Sphagnum obesum var. hemiisophyllum Warnst., Pflanzenr. 51: 304. 1911. (Warnstorf 1911)
- =Sphagnum obesum var. monocladum Warnst., Pflanzenr. 51: 304. 1911. (Warnstorf 1911) ≡Sphagnum subsecundum var. monocladum (Warnst.) Bott., Atti Reale Accad. Lincei, Mem. Cl. Sci. Fis., ser. 5, 13(1): 65. 1919.
- =Sphagnum auriculatum f. brachycladum Warnst., Pflanzenr. 51: 340. 1911. ≡Sphagnum auriculatum var. brachyladum (Warnst.) Bott., Atti Reale Accad. Lincei, Mem. Cl. Sci. Fis., ser. 5, 13(1): 62. 1919. (Bottini 1919)
- =Sphagnum auriculatum var. tenellum Warnst., Pflanzenr. 51: 340. 1911. (Warnstorf 1911)
- =Sphagnum auriculatum var. laxifolium Warnst., Pflanzenr. 51: 341. 1911. (Warnstorf 1911)
- =Sphagnum auriculatum f. pallidoflavum Warnst., Pflanzenr. 51: 341. 1911. (Warnstorf 1911)
- =Sphagnum auriculatum var. canovirescens Warnst., Pflanzenr. 51: 341 (Sphagnol. Univ. 341). 1911. (Warnstorf 1911)
- =Sphagnum auriculatum var. fluitans Warnst., Pflanzenr. 51: 342. 1911. (Warnstorf 1911)
- =Sphagnum auriculatum var. plumosum Warnst., Pflanzenr. 51: 342. 1911. (Warnstorf 1911)
- =Sphagnum auriculatum var. racemosum Warnst., Pflanzenr. 51: 342. 1911. (Warnstorf 1911)
- =Sphagnum auriculatum var. submersum Warnst., Pflanzenr. 51: 342. 1911. (Warnstorf 1911)
- =Sphagnum aquatile var. intortum Warnst., Pflanzenr. 51: 344. 1911. (Warnstorf 1911)
- =Sphagnum aquatile var. mastigocladum Warnst., Pflanzenr. 51: 344. 1911. (Warnstorf 1911)
- =Sphagnum aquatile var. sanguinale Warnst., Pflanzenr. 51: 344. 1911. (Warnstorf 1911)
- =Sphagnum aquatile var. pallidum Warnst., Pflanzenr. 51: 345. 1911. (Warnstorf 1911) ≡Sphagnum auriculatum var. pallidum (Warnst.) Bott., Atti Reale Accad. Lincei, Mem. Cl. Sci. Fis., ser. 5, 13(1): 63. 1919. (Bottini 1919)
- =Sphagnum aquatile var. plumosum Warnst., Pflanzenr. 51: 345. 1911. (Warnstorf 1911)
- =Sphagnum aquatile var. remotum Warnst., Pflanzenr. 51: 345. 1911. (Warnstorf 1911)
- =Sphagnum aquatile var. subfuscum Warnst., Pflanzenr. 51: 345. 1911. (Warnstorf 1911)
- =Sphagnum aquatile var. ochraceoviolascens Warnst., Pflanzenr. 51: 346. 1911. (Warnstorf 1911)
- =Sphagnum aquatile var. pauperatum Warnst., Pflanzenr. 51: 346. 1911. (Warnstorf 1911) ≡Sphagnum auriculatum var. pauperatum (Warnst.) Bott., Atti Reale Accad. Lincei, Mem. Cl. Sci. Fis., ser. 5, 13(1): 63. 1919. (Bottini 1919)
- =Sphagnum alabamae var. humile Warnst., Pflanzenr. 51: 370. 1911. (Warnstorf 1911; Michaelis 2011)
- =Sphagnum crassicladum var. magnifolium Warnst., Pflanzenr. 51: 387. 1911, nom. illeg. (Warnstorf 1911; Wijk et al. 1967)
- =Sphagnum crassicladum var. diversifolium Warnst., Pflanzenr. 51: 388. 1911, nom. illeg. (Warnstorf 1911; Wijk et al. 1967)
- =Sphagnum crassicladum f. versicolor Warnst., Pflanzenr. 51: 388. 1911. (Warnstorf 1911)
- =Sphagnum crassicladum var. intermedium Warnst., Pflanzenr. 51: 389. 1911. (Warnstorf 1911)
- =Sphagnum camusii var. crispatum Warnst., Pflanzenr. 51: 396. 1911. (Warnstorf 1911)
- =Sphagnum camusii var. plumosum Warnst., Pflanzenr. 51: 396. 1911. (Warnstorf 1911)
- =Sphagnum camusii var. pyrenaicum Warnst., Pflanzenr. 51: 396. 1911. (Warnstorf 1911)
- =Sphagnum camusii var. venustum Warnst., Pflanzenr. 51: 397. 1911. (Warnstorf 1911)
- =Sphagnum rufescens f. bicolor Warnst., Pflanzenr. 51: 403. 1911. (Warnstorf 1911)
- =Sphagnum rufescens var. magnifolium Warnst., Pflanzenr. 51: 403 (Sphagnol. Univ. 403). 1911, nom. illeg. (Warnstorf 1911; Wijk et al. 1967)
- =Sphagnum rufescens f. dimorphum Warnst., Pflanzenr. 51: 405. 1911. (Warnstorf 1911)
- =Sphagnum rufescens var. parvulum Warnst., Pflanzenr. 51: 405. 1911. (Warnstorf 1911)
- =Sphagnum turgidulum var. laxifolium Warnst., Pflanzenr. 51: 409. 1911. (Warnstorf 1911)
- =Sphagnum turgidulum var. plumosum Warnst., Pflanzenr. 51: 409. 1911. (Warnstorf 1911)
- =Sphagnum turgidulum var. brevirameum Warnst., Pflanzenr. 51: 410. 1911. (Warnstorf 1911)
- =Sphagnum turgidulum var. insignitum Warnst., Pflanzenr. 51: 410. 1911. (Warnstorf 1911)
- =Sphagnum turgidulum var. sanguinale Warnst., Pflanzenr. 51: 410. 1911. (Warnstorf 1911)
- =Sphagnum turgidulum var. sordidofuscoatrum Warnst., Pflanzenr. 51: 410. 1911. (Warnstorf 1911)
- =Sphagnum turgidulum var. tenuissimum Warnst., Pflanzenr. 51: 410. 1911. (Warnstorf 1911)
- =Sphagnum turgidulum var. teretiusculum Warnst., Pflanzenr. 51: 410. 1911. (Warnstorf 1911)
- =Sphagnum turgidulum var. isophyllum Warnst., Pflanzenr. 51: 411. 1911. (Warnstorf 1911)
- =Sphagnum turgidulum var. remotum Warnst., Pflanzenr. 51: 411. 1911. (Warnstorf 1911)
- =Sphagnum turgidulum var. subsquarrosum Warnst., Pflanzenr. 51: 411. 1911. (Warnstorf 1911)
- =Sphagnum pseudoturgidum var. brachycladum Röll, Hedwigia 51: 112. 1911. (Röll 1911b)
- =Sphagnum auriculatum var. gracile Röll, Hedwigia 51: 113. 1911. (Warnstorf 1911)
- =Sphagnum turgidum var. fluitans A. Braun ex Röll, Hedwigia 51: 113. 1911. (Röll 1911b)
- =Sphagnum turgidum var. submersum Warnst. ex Röll, Hedwigia 51: 113. 1911. (Röll 1911b)
- =Sphagnum pseudobesum Röll, Hedwigia 51: 114. 1911. (Michaelis 2019)
- =Sphagnum turgidum var. contortum Röll ex Bott., Webbia 4: 133. 1913. (Bottini 1913)
- =Sphagnum cupressiforme var. ambiguum Röll, Hedwigia 56: 87. 1915. (Röll 1915)
- =Sphagnum cupressiforme var. patulum Röll, Hedwigia 56: 88. 1915. (Röll 1915)
- =Sphagnum auriculatum var. compactum Röll, Hedwigia 56: 91. 1915. (Röll 1915)
- =Sphagnum auriculatum var. laxum Röll, Hedwigia 56: 91. 1915. (Röll 1915)
- =Sphagnum auriculatum var. teretiusculum Röll, Hedwigia 56: 91. 1915. (Röll 1915)
- =Sphagnum auriculatum var. flagellare Röll, Hedwigia 56: 92. 1915. (Röll 1915)
- =Sphagnum obesum f. parvifolium Wheldon, Syn. Eur. Sphagna: 26. 1917. (Wheldon 1917)
- =Sphagnum turgidum var. scorpioides Röll, Hedwigia 60: 47. 1918. (Röll 1918)
- =Sphagnum auriculatum var. deflexum Bott., Atti Reale Accad. Lincei, Mem. Cl. Sci. Fis., ser. 5, 13(1): 63. 1919. (Bottini 1919)
- =Sphagnum auriculatum f. immersum Wheldon, J. Bot. 57: 144. 1919. (Wheldon 1919)
- =Sphagnum obesum var. devoniense Sherrin & Wheldon, J. Bot. 59: 185. 1921. (Wheldon 1921)
- =Sphagnum auriculatum var. densum Röll, Hedwigia 64: 211. 1923. (Röll 1923b)
- =Sphagnum turgidum var. patens Röll, Hedwigia 64: 212. 1923. (Röll 1923b)
- =Sphagnum auriculatum var. patulum Röll, Hedwigia 64: 212, 219. 1923. (Röll 1923b)
- =Sphagnum cupressiforme var. brachycladum Röll, Hedwigia 64: 27. 1923. (Röll 1923a)
- =Sphagnum rufescens f. compactum Pichl., Acta Bot. Inst. Bot. Univ. Zagreb. 3: 55. 1928, nom. illeg. (Pichler 1928)
- =Sphagnum subsecundum var. yuennanense C.E.O. Jensen, Symb. Sin. 4: 8. 1929. (Brotherus 1929; Gao et al. 1999)
Sphagnum denticulatum Brid. var. denticulatum
Sphagnum denticulatum var. monocladum J.-P. Frahm & Sabovlj., Trop. Bryol. 27: 117. 2006. (Frahm & Sabovljević 2006)
Sphagnum diabolicum A.J. Shaw, Aguero & Nieto-Lugilde, Bryologist 126(1): 88. 2023. (Shaw et al. 2023)
Sphagnum diblastoides H.A. Crum, Contr. Univ. Michigan Herb. 23: 114. 2001. (Crum 2001; Michaelis 2019)

Replaced synonym: Sphagnum austroamericanum H.A. Crum, Bryologist 98: 588. 1995, nom. illeg. (Crum 1995d)
Sphagnum dicladum Warnst., Hedwigia 47: 109. 1907. (Michaelis 2019)
Sphagnum dimorphophyllum H.A. Crum & W.R. Buck, Brittonia 44: 451. 1992. (Crum & Buck 1992; Costa 2021)
Sphagnum divinum Flatberg & K. Hassel, J. Bryol. 40(3): 206. 2018. (Hassel et al. 2018; Hodgetts et al. 2020)
Sphagnum divisum H.A. Crum, Bryologist 95: 424. 1992. (Crum 1992b; Costa 2021)
Sphagnum dominii Kavina, Sitzungsber. Königl. Böhm. Ges. Wiss. Prag, Math.-Naturwiss. Cl. 1915(9): 2. 1916. (Michaelis 2019)
Sphagnum efibrillosum A.L. Andrews, Bryologist 40: 36. 1937. (Michaelis 2019)
Sphagnum engelii H.A. Crum, Bryologist 98: 265. 1995. (Crum 1995c; Michaelis 2019)
Sphagnum ericetorum Brid., Muscol. Recent. Suppl. 1: 19. 1806. (Bridel 1806–1817; Michaelis 2019)

≡Sphagnum obtusifolium var. ericetorum (Brid.) Sw., Adnot. Bot.: 72. 1829. (Swartz 1829)
Sphagnum exile H.A. Crum, Contr. Univ. Michigan Herb. 20: 135. 1995. (Crum 1995a; Costa 2021)
- =Sphagnum laxiramosum H.A. Crum, Contr. Univ. Michigan Herb. 21: 153. 1997. (Crum 1997a; Costa & Fares 2012)
Sphagnum exquisitum H.A. Crum, Bryologist 95: 420. 1992. (Crum 1992b; Costa 2021)
Sphagnum falcatulum Besch., Bull. Soc. Bot. France 32: LXVII. 1885. (Bescherelle 1885; Michaelis 2019)

≡Sphagnum cuspidatum var. falcatulum (Besch.) Paris, Index Bryol.: 1184. 1898.
- =Sphagnum naumannii Müll. Hal., Bot. Jahrb. Syst. 5: 87. 1883. (Müller 1883; McCarthy 2006)
- =Sphagnum elegans Müll. Hal., Flora 70: 413. 1887. (Müller 1887; Fife 1996)
- =Sphagnum lanceolatum Warnst., Hedwigia 29: 219. 1890. (Warnstorf 1890d; Gao et al. 1999)
- =Sphagnum serrulatum Warnst., Hedwigia 32: 1. 1893. (Seppelt 2006)
- =Sphagnum undulatum Warnst., Hedwigia 33: 317. 1894. (Michaelis 2019)
- =Sphagnum irritans Warnst., Allg. Bot. Z. Syst. 1: 173. 1895. (Fife 1996)
- =Sphagnum scortechinii Müll. Hal., Hedwigia 36: 153. 1897. (McCarthy 2006)
- =Sphagnum lancifolium Müll. Hal. & Warnst., Hedwigia 36: 154. 1897. (McCarthy 2006)
- =Sphagnum subcuspidatum Müll. Hal. & Warnst., Hedwigia 36: 155. 1897. (Wijk et al. 1967)
- =Sphagnum wattsii Warnst., Bot. Centralbl. 76: 10. 1898. (McCarthy 2006)
- =Sphagnum nanoporosum Warnst., Bot. Centralbl. 76: 8. 1898. (Michaelis 2019)
- =Sphagnum linguifolium Warnst., Bot. Centralbl. 76: 421. 1899. (Wijk et al. 1967)
- =Sphagnum kirkii Warnst., Bot. Centralbl. 82: 53. 1900. (Wijk et al. 1967)
- =Sphagnum serratifolium Warnst., Bot. Centralbl. 82: 72. 1900. (McCarthy 2006)
- =Sphagnum brotherusii Warnst., Bot. Centralbl. 82: 74. 1900. (McCarthy 2006)
- =Sphagnum drepanocladum Warnst., Bot. Centralbl. 82: 75. 1900. (McCarthy 2006)
- =Sphagnum trichophyllum Warnst., Hedwigia 39: 100. 1900. (McCarthy 2006)
- =Sphagnum setchellii Warnst., Hedwigia 47: 121. 1908. (Fife 1996)
- =Sphagnum brotherusii var. plumulosum Warnst., Pflanzenr. 51: 248. 1911. (Warnstorf 1911)
- =Sphagnum drepanocladum var. latilimbatum Warnst., Pflanzenr. 51: 251. 1911. (Warnstorf 1911; Suzuki 2016)
- =Sphagnum patagoniense Warnst., Pflanzenr. 51: 259. 1911. (Warnstorf 1911; Michaelis 2019)
- =Sphagnum patagoniense var. submersum Warnst., Pflanzenr. 51: 259. 1911. (Warnstorf 1911)
- =Sphagnum wattsii var. leptocladum Warnst., Pflanzenr. 51: 272. 1911. (Warnstorf 1911)
- =Sphagnum wattsii var. macrophyllum Warnst., Pflanzenr. 51: 272. 1911. (Warnstorf 1911)
- =Sphagnum rodwayi Warnst., Pap. & Proc. Roy. Soc. Tasmania 1913: 257. 1914. (McCarthy 2006)
- =Sphagnum nanoporosum var. skottsbergii Cardot, Kongl. Svenska Vetensk. Acad. Handl., n.s. 63(40): 5. 1923. (Cardot & Brotherus 1923; Matteri 2003)
- =Sphagnum subfalcatulum Roiv., Ann. Bot. Soc. Zool.-Bot. Fenn. "Vanamo" 9(2): 4. 1937. (Roivainen & Bartram 1937; Karlin et al. 2013)
- =Sphagnum personatum Roiv., Ann. Bot. Soc. Zool.-Bot. Fenn. "Vanamo" 9(2): 5. 1937. (Roivainen & Bartram 1937; Karlin et al. 2013)
- =Sphagnum subserratum Roiv., Ann. Bot. Soc. Zool.-Bot. Fenn. "Vanamo" 9(2): 7. 1937. (Roivainen & Bartram 1937; Karlin et al. 2013)
- =Sphagnum dissimile Roiv., Ann. Bot. Soc. Zool.-Bot. Fenn. "Vanamo" 9(2): 8. 1937. (Roivainen & Bartram 1937; Karlin et al. 2013)
- =Sphagnum dusenioides Roiv., Ann. Bot. Soc. Zool.-Bot. Fenn. "Vanamo" 9(2): 9. 1937. (Roivainen & Bartram 1937; Karlin et al. 2013)
- =Drepanocladus fontinaliopsis var. flaccidus Allison, Trans. Roy. Soc. New Zealand, Bot. 2: 136. 1963. (Allison 1963; Ochyra & Bartlett 1986)
- =Sphagnum subditivum H.A. Crum, Contr. Univ. Michigan Herb. 21: 150. 1997. (Crum 1997a; Karlin et al. 2013)
- =Sphagnum ehyalinum A.J. Shaw & Goffinet, Bryologist 103: 369. 2000. (Shaw & Goffinet 2000; Karlin et al. 2013)
Sphagnum falcatulum Besch. var. falcatulum
Sphagnum falcatulum var. microporum Warnst., Allg. Bot. Z. Syst. 1: 189. 1895. (Matteri 2003)

≡Sphagnum cuspidatum var. microporum (Warnst.) Paris, Index Bryol.: 1184. 1897.
Sphagnum fallax (H. Klinggr.) H. Klinggr., Vers. Topogr. Fl. Westpreuss.: 128. 1880. (Klinggräff 1880; Hodgetts et al. 2020)

Basionym: Sphagnum cuspidatum var. fallax H. Klinggr., Schriften Königl. Phys.-Ökon. Ges. Königsberg 13: 7. 1872. (Klinggräff 1872)

≡Sphagnum apiculatum var. fallax (H. Klinggr.) C.E.O. Jensen, Danmarks Mosser 1: 270. 1915. ≡Sphagnum recurvum subsp. fallax (H. Klinggr.) J.J. Amann, Fl. Mouss. Suisse 1: 194. 1918. (Amann & Meylan 1918) ≡Sphagnum cuspidatum subsp. fallax (H. Klinggr.) Bott., Atti Reale Accad. Lincei, Mem. Cl. Sci. Fis., ser. 5, 13(1): 21. 1919. ≡Sphagnum recurvum var. fallax (H. Klinggr.) H.K.G. Paul, Abh. Landesmus. Prov. Westfalen Mus. Naturk. 10(2): 12. 1939, nom. illeg. ≡Sphagnum flexuosum var. fallax (H. Klinggr.) M.O. Hill ex A.J.E. Sm., J. Bryol. 9: 394. 1977. (Smith 1977)
- =Sphagnum cuspidatum var. mougeotii Boulay, Fl. Crypt. Est, Musc.: 718. 1872. (Boulay 1872; Isoviita 1966)
- =Sphagnum variabile [unranked] bulnheimii Warnst., Bot. Centralbl. 9: 168. 1882. ≡Sphagnum cuspidatum var. bulnheimii (Warnst.) Warnst., Flora 67: 609. 1884. (Warnstorf 1911)
- =Sphagnum variabile f. strictum Warnst., Flora 65: 465. 1882. ≡Sphagnum cuspidatum var. strictum (Warnst.) Warnst., Flora 67: 609. 1884. (Warnstorf 1911)
- =Sphagnum recurvum var. winteri Warnst., Hedwigia 23: 123. 1884. (Warnstorf 1884b) ≡Sphagnum fallax var. winteri (Warnst.) Warnst., Pflanzenr. 51: 241. 1911. (Warnstorf 1911)
- =Sphagnum recurvum var. flagellare Röll, Flora 69: 228. 1886, nom. illeg. ≡Sphagnum fallax var. flagellare Röll, Hedwigia 46: 227. 1907. (Röll 1907b)
- =Sphagnum cuspidatum var. schliephackeanum Röll, Flora 69: 234. 1886. ≡Sphagnum schliephackei G. Roth, Eur. Torfm. (Roth): 38. 1906. (Roth 1906; Isoviita 1966) ≡Sphagnum cuspidatum subsp. schliephackei (G. Roth) Bott., Atti Reale Accad. Lincei, Mem. Cl. Sci. Fis., ser. 5, 13(1): 21. 1919.
- =Sphagnum recurvum subsp. mucronatum Russow, Sitzungsber. Naturf.-Ges. Dorpat 9: 99, 110. 1890. ≡Sphagnum recurvum var. mucronatum (Russow) Warnst., Bot. Gaz. 15: 218. 1890. ≡Sphagnum mucronatum (Russow) Zick., Bull. Soc. Imp. Naturalistes Moscou, n.s. 14: 276. 1900, nom. illeg. (Zickendrath 1901; McQueen & Andrus 2007)
- =Sphagnum recurvum var. pallescens C.E.O. Jensen, Festskr. Bot. Foren. Kjøbenhavn: 102. 1890. ≡Sphagnum apiculatum var. pallescens (C.E.O. Jensen) C.E.O. Jensen, Danmarks Mosser 1: 270. 1915. (Jensen 1915)
- =Sphagnum recurvum var. fuscescens C.E.O. Jensen, Festskr. Bot. Foren. Kjøbenhavn: 104. 1890. ≡Sphagnum apiculatum var. fuscescens (C.E.O. Jensen) C.E.O. Jensen, Danmarks Mosser 1: 270. 1915. (Jensen 1915)
- =Sphagnum schultzii Warnst., Krypt.-Fl. Brandenburg, Leber- & Torfm.: 402. 1903. (Warnstorf 1902–1903; Isoviita 1966) ≡Sphagnum schliephackei var. schultzii (Warnst.) G. Roth, Eur. Torfm. (Roth): 38. 1906. (Roth 1906) ≡Sphagnum fallax var. schultzii (Warnst.) Warnst., Sphagnol. Univ.: 255. 1911, nom. illeg.
- =Sphagnum apiculatum H. Lindb., Sitzungsber. Deutsch. Naturwiss.-Med. Vereins Böhmen "Lotos" Prag 51: 130. 1903. (McQueen & Andrus 2007)
- =Sphagnum fallax var. limprichtii Röll, Hedwigia 40: 227. 1907. (Röll 1907b)
- =Sphagnum fallax var. compactum Röll, Hedwigia 46: 226. 1907. (Röll 1907b)
- =Sphagnum fallax var. falcatum Röll, Hedwigia 46: 226. 1907. (Röll 1907b)
- =Sphagnum fallax var. gracile Röll, Hedwigia 46: 226. 1907. (Röll 1907b)
- =Sphagnum fallax var. molle Röll, Hedwigia 46: 226. 1907. (Röll 1907b)
- =Sphagnum fallax var. patulum Röll, Hedwigia 46: 227. 1907. (Röll 1907b)
- =Sphagnum fallax var. submersum Röll, Hedwigia 46: 227. 1907. (Röll 1907b)
- =Sphagnum fallax subsp. aequiporosa Warnst., Pflanzenr. 51: 252. 1911. (Warnstorf 1911)
- =Sphagnum fallax var. laxifolium Warnst., Pflanzenr. 51: 252. 1911. (Warnstorf 1911)
- =Sphagnum fallax var. microphyllum Warnst., Pflanzenr. 51: 253. 1911. (Warnstorf 1911)
- =Sphagnum fallax var. plumosum Warnst., Pflanzenr. 51: 253. 1911, nom. illeg. (Warnstorf 1911)
- =Sphagnum fallax var. gracile Warnst., Pflanzenr. 51: 254. 1911, nom. illeg. (Warnstorf 1911; Wijk et al. 1967)
- =Sphagnum fallax var. latifolium Warnst., Pflanzenr. 51: 254. 1911. (Warnstorf 1911)
- =Sphagnum fallax var. robustum Warnst., Pflanzenr. 51: 254. 1911. (Warnstorf 1911)
- =Sphagnum fallax var. saxoniense Warnst., Pflanzenr. 51: 254. 1911. (Warnstorf 1911)
- =Sphagnum fallax subsp. versiporosa Warnst., Pflanzenr. 51: 254. 1911, nom. illeg. (Warnstorf 1911; Wijk et al. 1967)
- =Sphagnum fallax var. squarrosulum Röll, Hedwigia 51: 101. 1911. (Röll 1911b)
- =Sphagnum fallax var. plumosum Röll, Hedwigia 51: 102. 1911. (Röll 1911b)
- =Sphagnum apiculatum var. viride C.E.O. Jensen, Danmarks Mosser 1: 270. 1915. (Jensen 1915)
- =Sphagnum fallax var. densum Röll, Hedwigia 60: 25. 1918. (Röll 1918)
- =Sphagnum fallax var. stellare Röll, Hedwigia 60: 26. 1918. (Röll 1918)
- =Sphagnum fallax var. limosum Röll, Hedwigia 60: 42. 1918. (Röll 1918)
- =Sphagnum fallax var. revolvens Röll, Hedwigia 60: 48. 1918. (Röll 1918)
- =Sphagnum fallax var. tenellum Röll, Hedwigia 60: 48. 1918. (Röll 1918)
- =Sphagnum fallax var. macrocephalum Röll, Hedwigia 60: 49. 1918. (Röll 1918)
Sphagnum fallax var. brevifolium (Lindb. ex Braithw.) Lönnell & K. Hassel, Phytotaxa 369(1): 57. 2018. (Lönnell & Hassel 2018; Hodgetts et al. 2020)

Basionym: Sphagnum cuspidatum var. brevifolium Lindb. ex Braithw., Sphagnac. Eur.: 84. 1878. (Braithwaite 1878)

≡Sphagnum intermedium var. brevifolium (Lindb. ex Braithw.) Schlieph., Irmischia 2: 79. 1882. ≡Sphagnum recurvum var. brevifolium (Lindb. ex Braithw.) Warnst., Flora 67: 608. 1884. ≡Sphagnum brevifolium (Lindb. ex Braithw.) Röll, Bot. Centralbl. 39: 340. 1889. (Lönnell & Hassel 2018) ≡Sphagnum cuspidatum subsp. brevifolium (Lindb. ex Braithw.) Bott., Atti Reale Accad. Lincei, Mem. Cl. Sci. Fis., ser. 5, 13(1): 20. 1919. ≡Sphagnum amblyphyllum var. brevifolium (Lindb. ex Braithw.) H. Schmidt, Mitt. Bad. Landesvereins Naturk. Naturschutz Freiburg 2: 111. 1927.
- =Sphagnum recurvum f. capitatum Grav. ex Warnst., Hedwigia 23: 123. 1884. ≡Sphagnum recurvum var. capitatum (Grav. ex Warnst.) Warnst., Verh. Bot. Vereins Prov. Brandenburg 32: 220. 1891. ≡Sphagnum parvifolium var. capitatum (Grav. ex Warnst.) Zick., Bull. Soc. Imp. Naturalistes Moscou, n.s. 1900(3): 279. 1901. (Zickendrath 1901) ≡Sphagnum brevifolium var. capitatum (Grav. ex Warnst.) Röll, Hedwigia 44: 48. 1904. (Röll 1905)
- =Sphagnum recurvum var. fibrosum Schlieph., Hedwigia 23: 123. 1884. ≡Sphagnum intermedium var. fibrosum (Schlieph.) Röll, Flora 69: 231. 1886. ≡Sphagnum brevifolium var. fibrosum (Schlieph.) Röll, Webbia 9: 391. 1914. ≡Sphagnum schliephackei var. fibrosum (Schlieph.) Röll, Hedwigia 56: 71. 1915. (Röll 1915) ≡Sphagnum flexuosum f. fibrosum (Schlieph.) Margad. & During, Bekn. Fl. Ned. Blad. & Leverm.: 443. 1982. (Margadant & During 1982; Dirkse et al. 1988)
- =Sphagnum recurvum var. strictforme Röll, Flora 69: 187. 1886. ≡Sphagnum brevifolium var. strictiforme (Röll) Röll, Hedwigia 56: 78. 1915. (Röll 1915)
- =Sphagnum recurvum var. subfibrosum Röll, Flora 69: 187. 1886. ≡Sphagnum brevifolium var. subfibrosum (Röll) Röll, Hedwigia 42(Beibl.): 26. 1903. (Röll 1903a)
- =Sphagnum recurvum var. humile Schlieph. & Röll, Flora 69: 227. 1886. ≡Sphagnum brevifolium var. humile (Schlieph. & Röll) Röll, Hedwigia 46: 232. 1907. (Röll 1907b)
- =Sphagnum recurvum var. laxum Schlieph. ex Röll, Flora 69: 230. 1886. ≡Sphagnum fallax var. laxum (Schlieph. ex Röll) Warnst., Pflanzenr. 51: 241, 529. 1911. (Warnstorf 1911) ≡Sphagnum brevifolium var. laxum (Schlieph. ex Röll) Röll, Hedwigia 60: 36. 1918. (Röll 1918)
- =Sphagnum brevifolium var. immersum Röll, Hedwigia 46: 234. 1907. (Röll 1907b)
- =Sphagnum brevifolium var. molle Röll, Hedwigia 46: 234. 1907. (Röll 1907b)
- =Sphagnum brevifolium var. patulum Röll, Hedwigia 46: 234. 1907. (Röll 1907b)
- =Sphagnum brevifolium var. robustum Röll, Hedwigia 46: 234. 1907. (Röll 1907b)
- =Sphagnum brevifolium var. squarrosulum Röll, Hedwigia 46: 234. 1907. (Röll 1907b)
- =Sphagnum brevifolium var. fragile Röll, Hedwigia 51: 103. 1911. (Röll 1911b)
- =Sphagnum brevifolium var. macrophyllum Röll, Hedwigia 51: 104. 1911. (Röll 1911b)
- =Sphagnum brevifolium var. submersum Röll, Hedwigia 51: 104. 1911. (Röll 1911b)
- =Sphagnum brevifolium var. densum Röll ex Bott., Webbia 4: 390. 1914. (Bottini 1914)
- =Sphagnum brevifolium var. tenellum Röll, Hedwigia 59: 295. 1917. (Röll 1917)
- =Sphagnum brevifolium var. flagellare Röll, Hedwigia 60: 36. 1918. (Röll 1918)
- =Sphagnum brevifolium var. brachycladum Röll, Hedwigia 64: 227. 1923. (Röll 1923b)
Sphagnum fallax (H. Klinggr.) H. Klinggr. var. fallax
Sphagnum fallax var. isoviitae (Flatberg) Lönnell & K. Hassel, Phytotaxa 369(1): 57. 2018. (Lönnell & Hassel 2018; Hodgetts et al. 2020)

Basionym: Sphagnum isoviitae Flatberg, J. Bryol. 17: 2. 1992. (Flatberg 1992; Lönnell & Hassel 2018)

≡Sphagnum fallax subsp. isoviitae (Flatberg) M.O. Hill, Check-list Cens. Cat. Brit. Irish Bryoph.: 27. 1998. (Blockeel & Long 1998)
Sphagnum fimbriatum Wilson, Fl. Antarct. 2(23): 398. 1847. (Hooker 1847; Hodgetts et al. 2020)

≡Sphagnum acutifolium subsp. fimbriatum (Wilson) Hérib., Mém. Acad. Sci. Clermont-Ferrand, sér. 2, 14: 442. 1899.
- =Sphagnum acutifolium var. tenue Nees & Hornsch., Bryol. Germ. 1: 21. 1823. (Nees von Esenbeck et al. 1823; Isoviita 1966) ≡Sphagnum capillifolium var. tenue (Nees & Hornsch.) Steud., Nomencl. Bot. 2: 397. 1824. (Steudel 1824) ≡Sphagnum squarrosum var. tenue (Nees & Hornsch.) Bruch, Flora 8: 632. 1825. ≡Sphagnum tenue (Nees & Hornsch.) Dozy & Molk., Verh. Kon. Akad. Wetensch., Afd. Natuurk. 2: 4. 1854. (Isoviita 1966)
- =Sphagnum chilense Lorentz, Bot. Zeitung (Berlin) 24: 185. 1866. (Lorentz 1866; Crum 1984b)
- =Sphagnum squarrosum var. laxum Braithw., Sphagnac. Eur.: 61. 1880. (Braithwaite 1878) ≡Sphagnum fimbriatum f. laxum (Braithw.) Wheldon, J. Bot. 57: 146. 1919. ≡Sphagnum fimbriatum var. laxum (Braithw.) Wijk & Margad., Taxon 14: 198. 1965. (Wijk & Margadant 1965; Ireland, Jr. et al. 1987)
- =Sphagnum fimbriatum var. compactum Warnst., Eur. Torfm. (Warnstorf): 115. 1881. (Warnstorf 1881; Suzuki 2016) ≡Sphagnum fimbriatum f. compactum (Warnst.) Warnst., Pflanzenr. 51: 55. 1911.
- =Sphagnum fimbriatum var. flagelliforme Warnst., Flora 65: 208. 1882. ≡Sphagnum fimbriatum subf. flagelliforme (Warnst.) Warnst., Pflanzenr. 51: 55. 1911. (Warnstorf 1911)
- =Sphagnum fimbriatum var. flagellaceum Schlieph., Irmischia 2: 65. 1882. (Schliephacke 1882; Warnstorf 1911)
- =Sphagnum fimbriatum var. squarrosulum H. Müll. ex Schlieph., Irmischia 2: 65. 1882. (Schliephacke 1882; Warnstorf 1911)
- =Sphagnum fimbriatum var. robustum Braithw. ex Warnst., Hedwigia 23: 119. 1884, nom. illeg. (Warnstorf 1884b; Wijk et al. 1967)
- =Sphagnum fimbriatum var. validius Cardot, Rev. Bryol. 11: 55. 1884. (Cardot 1884; Warnstorf 1911)
- =Sphagnum fimbriatum var. strictum Grav. ex Röll, Flora 69: 135. 1886. (Wijk et al. 1967) ≡Sphagnum fimbriatum f. strictum (Grav. ex Röll) Lange & C.E.O. Jensen, Meddel. Grønland 3: 402. 1887.
- =Sphagnum fimbriatum var. submersum Röll, Flora 69: 135. 1886. (Warnstorf 1911)
- =Sphagnum fimbriatum var. tenue Grav. ex Röll, Flora 69: 135. 1886. (Crum 1984b)
- =Sphagnum fimbriatum var. trichodes Russow, Festskr. Bot. Foren. Kjøbenhavn: 98. 1890. (Warnstorf 1911)
- =Sphagnum fimbriatum var. densum Röll, Bot. Centralbl. 46: 375. 1891. (Röll 1891b)
- =Sphagnum fimbriatum var. gracilescens Röll, Bot. Centralbl. 46: 375. 1891. (Röll 1891b)
- =Sphagnum microphyllum Warnst., Hedwigia 30: 172. 1891. (Warnstorf 1891a; Crum 1984b)
- =Sphagnum bolanderi Warnst., Hedwigia 30: 173. 1891. (McQueen & Andrus 2007) ≡Sphagnum microphyllum var. bolanderi (Warnst.) Warnst., Pflanzenr. 51: 61. 1911. (Warnstorf 1911)
- =Sphagnum fimbriatum var. flavescens Warnst. & Cardot, Bull. Herb. Boissier, sér. 2, 7: 710. 1907. (Cardot 1907; Suzuki 2016)
- =Sphagnum fimbriatum var. flavescens Warnst., Univ. Calif. Publ. Bot. 2(14): 313. 1907, nom. illeg. (Warnstorf 1911)
- =Sphagnum fimbriatum var. intermedium Russow, Pflanzenr. 51: 55. 1911. (Warnstorf 1911)
- =Sphagnum fimbriatum f. spectabile Warnst., Pflanzenr. 51: 55. 1911. (Warnstorf 1911)
- =Sphagnum fimbriatum var. heterophyllum Warnst., Pflanzenr. 51: 62. 1911. (Warnstorf 1911)
- =Sphagnum fimbriatum var. intricatum Röll, Hedwigia 59: 294. 1917. (Röll 1917)
- =Sphagnum fimbriatum f. compactum Wheldon, J. Bot. 57: 146. 1919, nom. illeg. (Wheldon 1919)
- =Sphagnum fimbriatum f. pycnocladum Wheldon, J. Bot. 57: 146. 1919. (Wheldon 1919)
- =Sphagnum fimbriatum var. molluscoides Cardot, Kongl. Svenska Vetensk. Acad. Handl., n.s. 63(10): 5. 1923. (Cardot & Brotherus 1923)
- =Sphagnum fimbriatum var. intersertum Pichl., Acta Bot. Inst. Bot. Univ. Zagreb. 3: 46. 1928. (Pichler 1928)
- =Sphagnum fimbriatum f. rigidum Pichl., Acta Bot. Inst. Bot. Univ. Zagreb. 3: 46. 1928. (Pichler 1928)
- =Sphagnum fimbriatum f. squarrosulum Pichl., Acta Bot. Inst. Bot. Univ. Zagreb. 3: 46. 1928, nom. illeg. (Pichler 1928)
Sphagnum fimbriatum Wilson var. fimbriatum
Sphagnum fimbriatum var. laxifolium Warnst., Pflanzenr. 51: 56. 1911. (Warnstorf 1911; Suzuki 2016)
Sphagnum fimbriatum var. norikusae Warnst., Pflanzenr. 51: 56. 1911. (Warnstorf 1911; Suzuki 2016)
Sphagnum fitzgeraldii Renauld ex Lesq. & James, Man. Mosses N. America: 23. 1884. (Lesquereux & James 1884; Michaelis 2019)

≡Sphagnum trinitense var. fitzgeraldii (Renauld ex Lesq. & James) Warnst., Pflanzenr. 51: 218. 1911. (Warnstorf 1911)
- =Sphagnum mohrianum Warnst., Hedwigia 31: 179. 1892. (Crum 1984b) ≡Sphagnum trinitense var. mohrianum (Warnst.) Warnst., Pflanzenr. 51: 219. 1911. (Warnstorf 1911)
- =Sphagnum crispatum H.A. Crum, Contr. Univ. Michigan Herb. 23: 108. 2001. (Crum 2001; Michaelis 2019)
Sphagnum flaccidum Besch., Mém. Soc. Natl. Sci. Nat. Cherbourg, sér. 3, 21: 272. 1877. (Bescherelle 1877; Michaelis 2019)
- =Sphagnum lindmanii Warnst., Bot. Centralbl. 76: 418. 1899. (Crum & Buck 1988) ≡Sphagnum flaccidum var. lindmanii (Warnst.) Warnst., Pflanzenr. 51: 329. 1911. (Warnstorf 1911)
Sphagnum flavicaule Warnst., Hedwigia 29: 190. 1890. (Michaelis 2019)
Sphagnum flavicomans (Cardot) Warnst., Pflanzenr. 51: 79. 1911. (Warnstorf 1911; Michaelis 2019)

Basionym: Sphagnum acutifolium var. flavicomans Cardot, Rev. Bryol. 11: 55. 1884. (Cardot 1884)

≡Sphagnum subnitens var. flavicomans (Cardot) Warnst., Verh. Bot. Vereins Prov. Brandenburg 30: 115. 1888. ≡Sphagnum plumulosum var. flavicomans (Cardot) A.L. Andrews, N. Amer. Fl. 15: 30. 1913. (Britton 1913)
- =Sphagnum acutifolium f. lividum Cardot, Bull. Soc. Roy. Bot. Belgique 25(2): 84. 1886. ≡Sphagnum flavicomans var. lividum (Cardot) Warnst., Pflanzenr. 51: 81. 1911. (Warnstorf 1911)
- =Sphagnum acutifolium f. minus Cardot, Bull. Soc. Roy. Bot. Belgique 25: 84. 1886. (Cardot 1886)
- =Sphagnum subnitens var. obscurum Warnst., Bot. Gaz. 15: 196. 1890. (Michaelis 2019)
- =Sphagnum subnitens var. viride Warnst., Bot. Gaz. 15: 196. 1890. (Flora of North America Editorial Committee 2007) ≡Sphagnum flavicomans var. viride (Warnst.) Warnst., Pflanzenr. 51: 81. 1911. (Warnstorf 1911) ≡Sphagnum plumulosum f. viride (Warnst.) Jenn., Amer. Midl. Naturalist, Monogr. 8: 41 [Man. Mosses W. Pennsylvania (ed. 2)]. 1951, nom. illeg. (Jennings 1951)
- =Sphagnum subnitens var. flavescens Warnst., Krypt.-Fl. Brandenburg, Leber- & Torfm.: 438. 1903. (Warnstorf 1902–1903; McQueen & Andrus 2007) ≡Sphagnum plumulosum var. flavescens (Warnst.) Fam., Denkschr. Bayer. Bot. Ges. Regensburg 10: 89. 1908.
- =Sphagnum flavicomans var. fuscescens Warnst., Pflanzenr. 51: 80. 1911. (Warnstorf 1911)
- =Sphagnum flavicomans var. fuscovirens Warnst., Pflanzenr. 51: 80. 1911. (Warnstorf 1911)
Sphagnum flexuosum Dozy & Molk., Prodr. Fl. Bat. 2(1): 76. 1851. (Dozy & Molkenboer 1851; Hodgetts et al. 2020)

≡Sphagnum fallax var. flexuosum (Dozy & Molk.) Nyholm, Ill. Moss Fl. Fennoscandia. II. Musci: 747. 1969. (Nyholm 1969)
- =Sphagnum chinense Brid., Bryol. Univ. 1: 750. 1827, nom. dub. (Bridel 1827a; Michaelis 2019)
- =Sphagnum flexuosum var. recurvum Dozy & Molk., Prodr. Fl. Bat. 2(1): 77. 1851. (Dozy & Molkenboer 1851; Isoviita 1966)
- =Sphagnum cuspidatum var. patens Ångstr. ex Lindb., Öfvers. Kongl. Vetensk.-Akad. Förh. 19: 137. 1862. (Lindberg 1862; Warnstorf 1881) ≡Sphagnum recurvum var. patens (Ångstr. ex Lindb.) Warnst., Flora 67: 607. 1884.
- =Sphagnum variabile f. majus Ångstr. ex Warnst., Eur. Torfm. (Warnstorf): 65. 1881. (Warnstorf 1881; Michaelis 2019) ≡Sphagnum variabile var. majus (Ångstr. ex Warnst.) Warnst., Flora 65: 550. 1882. ≡Sphagnum recurvum var. majus (Ångstr. ex Warnst.) Warnst., Flora 66: 374. 1883. ≡Sphagnum brevifolium var. majus (Ångstr. ex Warnst.) Röll, Bot. Centralbl. 39: 340. 1889.
- =Sphagnum variabile f. gracile Warnst., Eur. Torfm. (Warnstorf): 67. 1881. (Warnstorf 1911) ≡Sphagnum variabile var. gracile (Warnst.) Warnst., Flora 65: 550. 1882. ≡Sphagnum intermedium var. gracile (Warnst.) Husn., Sphagnol. Eur.: 14. 1882. ≡Sphagnum recurvum var. gracile (Warnst.) Grav. ex Röll, Flora 69: 186. 1886. (Röll 1886a) ≡Sphagnum angustifolium var. gracile (Warnst.) C.E.O. Jensen, Danmarks Mosser 1: 271. 1915.
- =Sphagnum recurvum f. dimorphum Schlieph., Irmischia 2(10–11): 66. 1882. ≡Sphagnum recurvum var. dimorphum (Schlieph.) Röll, Abh. Thüring. Bot. Vereins "Irmischia" 3: 24. 1884. (Warnstorf 1911) ≡Sphagnum brevifolium var. dimorphum (Schlieph.) Röll, Hedwigia 56: 79. 1915.
- =Sphagnum recurvum var. deflexum Grav., Bull. Soc. Roy. Bot. Belgique 23(2): 81. 1884. (Warnstorf 1911)
- =Sphagnum recurvum var. immersum Schlieph. & Warnst., Hedwigia 23: 122. 1884. (Warnstorf 1884b; Warnstorf 1911) ≡Sphagnum recurvum f. immersum (Schlieph. & Warnst.) Warnst., Pflanzenr. 51: 242. 1911.
- =Sphagnum recurvum f. tenellum Warnst., Hedwigia 23: 122. 1884. (Warnstorf 1884b)
- =Sphagnum recurvum var. squarrosulum Röll, Flora 69: 185. 1886. (Warnstorf 1911)
- =Sphagnum recurvum var. pulchrum Röll, Flora 69: 186. 1886, nom. illeg. (Warnstorf 1911)
- =Sphagnum recurvum var. semiundulatum Warnst., Verh. Bot. Vereins Prov. Brandenburg 30: 298. 1888. (Warnstorf 1911)
- =Sphagnum pseudorecurvum Röll, Bot. Centralbl. 39: 340. 1889. (Michaelis 2019)
- =Sphagnum recurvum subsp. amblyphyllum Russow, Sitzungsber. Naturf.-Ges. Dorpat 9: 99, 112. 1890. ≡Sphagnum recurvum var. amblyphyllum (Russow) Warnst., Bot. Gaz. 15: 219. 1890. ≡Sphagnum amblyphyllum (Russow) Zick., Bull. Soc. Imp. Naturalistes Moscou, n.s. 14(3): 278. 1901. (Isoviita 1966) ≡Sphagnum cuspidatum subsp. amblyphyllum (Russow) Bott., Atti Reale Accad. Lincei, Mem. Cl. Sci. Fis., ser. 5, 13(1): 20. 1919.
- =Sphagnum recurvum var. silvaticum Russow, Arch. Naturk. Liv- Ehst- Kurlands, Ser. 2, Biol. Naturk. 10: 515. 1894. ≡Sphagnum apiculatum var. silvaticum (Russow) Mikut., Bryoth. Balt.: 56. 1909. ≡Sphagnum amblyphyllum f. silvaticum (Russow) Warnst., Pflanzenr. 51: 213. 1911. (Warnstorf 1911)
- =Sphagnum amblyphyllum var. hydrophilum Warnst., Bull. Soc. Imp. Naturalistes Moscou, n.s. 14(3): 278. 1901. (Zickendrath 1901; Warnstorf 1911) ≡Sphagnum amblyphyllum subf. hydrophilum (Warnst.) Warnst., Pflanzenr. 51: 213. 1911.
- =Sphagnum fallax var. capitatum Röll ex G. Roth, Eur. Torfm. (Roth): 74. 1906. (Roth 1906) ≡Sphagnum pseudorecurvum var. capitatum (Röll ex G. Roth) Röll, Hedwigia 64: 208. 1923. (Röll 1923b)
- =Sphagnum pseudocuspidatum G. Roth, Eur. Torfm. (Roth): 75. 1906, nom. illeg. (Roth 1906; Isoviita 1966) ≡Sphagnum rothii Röll, Hedwigia 46: 217, 227. 1907. (Isoviita 1966) ≡Sphagnum cuspidatum subsp. rothii (Röll) Bott., Atti Reale Accad. Lincei, Mem. Cl. Sci. Fis., ser. 5, 13(1): 20. 1919.
- =Sphagnum permolle Cardot, Bull. Herb. Boissier, sér. 2, 7: 711. 1907. (Cardot 1907; Michaelis 2019)
- =Sphagnum rothii var. capitatum Röll, Hedwigia 46: 227. 1907. (Röll 1907b)
- =Sphagnum rothii var. deflexum Röll, Hedwigia 46: 227. 1907. (Röll 1907b)
- =Sphagnum rothii var. flagellare Röll, Hedwigia 46: 227. 1907. (Röll 1907b)
- =Sphagnum rothii var. immersum Röll, Hedwigia 46: 227. 1907. (Röll 1907b)
- =Sphagnum rothii var. longifolium Röll, Hedwigia 46: 227. 1907. (Röll 1907b)
- =Sphagnum rothii var. molle Röll, Hedwigia 46: 227. 1907. (Röll 1907b)
- =Sphagnum rothii var. tenue Röll, Hedwigia 46: 227. 1907. (Röll 1907b)
- =Sphagnum pseudorecurvum var. flagellare Röll, Hedwigia 46: 228. 1907. (Röll 1907b)
- =Sphagnum pseudorecurvum var. gracile Röll, Hedwigia 46: 228. 1907. (Röll 1907b)
- =Sphagnum pseudorecurvum var. molle Röll, Hedwigia 46: 228. 1907. (Röll 1907b)
- =Sphagnum pseudorecurvum var. patulum Röll, Hedwigia 46: 228. 1907. (Röll 1907b)
- =Sphagnum pseudorecurvum var. pseudosquamosum Röll, Hedwigia 46: 228. 1907. (Röll 1907b)
- =Sphagnum pseudorecurvum var. tenellum Röll, Hedwigia 46: 228. 1907. (Röll 1907b)
- =Sphagnum rothii var. robustum Röll, Hedwigia 46: 228. 1907. (Röll 1907b)
- =Sphagnum pseudorecurvum var. squarrosulum Röll, Hedwigia 46: 229. 1907. (Röll 1907b)
- =Sphagnum ligulatum Röll, Hedwigia 46: 230. 1907. (Isoviita 1966) ≡Sphagnum amblyphyllum var. ligulatum (Röll) H. Schmidt, Mitt. Bad. Landesvereins Naturk. Naturschutz Freiburg 2: 111. 1927.
- =Sphagnum ligulatum var. capitatum Röll, Hedwigia 46: 230. 1907. (Röll 1907b)
- =Sphagnum ligulatum var. crispulum Röll, Hedwigia 46: 231. 1907. (Röll 1907b)
- =Sphagnum ligulatum var. laricinum Röll, Hedwigia 46: 231. 1907. (Röll 1907b)
- =Sphagnum ligulatum var. molle Röll, Hedwigia 46: 231. 1907. (Röll 1907b)
- =Sphagnum amblyphyllum var. strictum Mikut., Bryoth. Balt.: 57. 1908. (Mikutowicz 1908)
- =Sphagnum riparioides Warnst., Hedwigia 47: 118. 1908. (Michaelis 2019)
- =Sphagnum amblyphyllum var. macrophyllum Warnst., Pflanzenr. 51: 212. 1911. (Warnstorf 1911)
- =Sphagnum amblyphyllum var. mesophyllum Warnst., Pflanzenr. 51: 213. 1911. (Warnstorf 1911)
- =Sphagnum amblyphyllum f. renauldii Warnst., Pflanzenr. 51: 213. 1911. (Warnstorf 1911)
- =Sphagnum lehmannii var. robustum Warnst., Pflanzenr. 51: 232. 1911. (Warnstorf 1911; Michaelis 2019)
- =Sphagnum ligulatum var. flagellare Röll, Hedwigia 51: 103. 1911. (Röll 1911b)
- =Sphagnum ligulatum var. teres Röll, Hedwigia 51: 103. 1911. (Röll 1911b)
- =Sphagnum pseudorecurvum var. submersum Röll, Hedwigia 51: 103. 1911. (Röll 1911b)
- =Sphagnum ligulatum var. submersum Röll, Hedwigia 56: 81. 1915. (Röll 1915)
- =Sphagnum rothii var. densum Röll, Hedwigia 59: 296. 1917. (Röll 1917)
- =Sphagnum rothii var. gracile Röll, Hedwigia 59: 296. 1917. (Röll 1917)
- =Sphagnum rothii var. falcatum Röll, Hedwigia 59: 297. 1917. (Röll 1917)
- =Sphagnum amblyphyllum f. inghamii Wheldon, Syn. Eur. Sphagna: 19. 1917. (Wheldon 1917)
- =Sphagnum pseudorecurvum var. densum Röll, Hedwigia 60: 14, 21, 45. 1918. (Röll 1918)
- =Sphagnum ligulatum var. robustum Röll, Hedwigia 60: 14, 22. 1918. (Röll 1918)
- =Sphagnum pseudorecurvum var. limosum Röll, Hedwigia 60: 14, 22, 45. 1918. (Röll 1918)
- =Sphagnum pseudorecurvum var. crassicaule Röll, Hedwigia 60: 14, 45. 1918. (Röll 1918)
- =Sphagnum rothii var. submersum Röll, Hedwigia 60: 21. 1918. (Röll 1918)
- =Sphagnum rothii var. tenellum Röll, Hedwigia 60: 21. 1918. (Röll 1918)
- =Sphagnum pseudorecurvum var. teres Röll, Hedwigia 60: 35; 22, 26, 45. 1918. (Röll 1918)
- =Sphagnum pseudorecurvum var. brevifolium Röll, Hedwigia 60: 49. 1918. (Röll 1918)
- =Sphagnum ligulatum var. densum Röll, Hedwigia 62: 160. 1921. (Röll 1921)
- =Sphagnum krylovii Semenov, Trudy Altaisk. Podotd. Russk. Geogr. Obshch. 1: 22, 26. 1921, nom. dub. (Semenov 1921; Michaelis 2019)
- =Sphagnum pseudorecurvum var. compactum Röll, Hedwigia 64: 208. 1923. (Röll 1923b)
- =Sphagnum pseudorecurvum var. deflexum Röll, Hedwigia 64: 208. 1923. (Röll 1923b)
- =Sphagnum ligulatum var. gracile Röll, Hedwigia 64: 225. 1923. (Röll 1923b)
- =Sphagnum ligulatum var. deflexum Röll, Hedwigia 64: 26. 1923. (Röll 1923a)
- =Sphagnum pseudorecurvum var. immersum G. Roth ex Röll, Hedwigia 66: 326. 1927. (Röll 1926)
- =Sphagnum amblyphyllum f. aquaticum Pichl., Acta Bot. Inst. Bot. Univ. Zagreb. 3: 51. 1928. (Pichler 1928)
- =Sphagnum amblyphyllum f. rigidum Pichl., Acta Bot. Inst. Bot. Univ. Zagreb. 3: 51. 1928. (Pichler 1928)
- =Sphagnum flexuosum var. ramosissimum R.E. Andrus, Bryologist 91: 365. 1988. (Andrus 1988b; McQueen & Andrus 2007)
Sphagnum fontanum Müll. Hal. ex Warnst., Hedwigia 30: 38. 1891. (Michaelis 2019)
- =Sphagnum brachycaulon Müll. Hal. ex Warnst., Hedwigia 30: 43. 1891. (Michaelis 2019)
Sphagnum frahmii H.A. Crum, Contr. Univ. Michigan Herb. 21: 159. 1997. (Crum 1997a; Costa 2021)
Sphagnum fraudulentum H.A. Crum, Contr. Univ. Michigan Herb. 20: 139. 1995. (Crum 1995a; Michaelis 2019)
Sphagnum funkiae H.A. Crum, J. Hattori Bot. Lab. 77: 238. 1994. (Crum 1994a; Michaelis 2019)
Sphagnum fuscovinosum Seppelt & H.A. Crum, Contr. Univ. Michigan Herb. 22: 132. 1999. (Seppelt & Crum 1999; Michaelis 2019)
Sphagnum fuscum (Schimp.) H. Klinggr., Schriften Königl. Phys.-Ökon. Ges. Königsberg 13(1): 4. 1872. (Klinggräff 1872; Hodgetts et al. 2020)

Basionym: Sphagnum acutifolium var. fuscum Schimp., Mém. Hist. Nat. Sphaignes: 63. 1857. (Schimper 1857)

≡Sphagnum nemoreum var. fuscum (Schimp.) Bott. & Venturi, Atti Soc. Crittog. Ital. 3: 226. 1884. ≡Sphagnum acutiforme var. fuscum (Schimp.) Warnst., Flora 67: 605. 1884. ≡Sphagnum acutifolium subsp. fuscum (Schimp.) Hérib., Mém. Acad. Sci. Clermont-Ferrand, sér. 2, 14: 444. 1899. ≡Sphagnum nemoreum subsp. fuscum (Schimp.) Bott., Atti Reale Accad. Lincei, Mem. Cl. Sci. Fis., ser. 5, 13(1): 20. 1919.
- =Sphagnum fuscum var. elongatum Cardot, Flora 69: 94. 1886. (Warnstorf 1911) ≡Sphagnum acutifolium f. elongatum (Cardot) Cardot, Bull. Soc. Roy. Bot. Belgique 25: 117. 1886, nom. illeg.
- =Sphagnum fuscum var. compactum Röll, Flora 69: 94. 1886. (Cardot 1897)
- =Sphagnum fuscum var. fuscescens Warnst., Verh. Bot. Vereins Prov. Brandenburg 30: 103. 1888. (Ochyra et al. 2003)
- =Sphagnum fuscum var. pallens Russow ex Warnst., Verh. Bot. Vereins Prov. Brandenburg 30: 103. 1888. (Warnstorf 1888)
- =Sphagnum fuscum var. viride Warnst., Verh. Bot. Vereins Prov. Brandenburg 30: 103. 1888. (Warnstorf 1888)
- =Sphagnum fuscum var. fuscoviride Warnst., Bot. Gaz. 15: 135. 1890. (Warnstorf 1882)
- =Sphagnum fuscum var. robustum Röll, Bot. Centralbl. 46: 253. 1891. (Röll 1891a)
- =Sphagnum fuscum var. densum Röll, Bot. Centralbl. 46: 254. 1891. (Röll 1891a)
- =Sphagnum fuscum var. filiforme Röll, Bot. Centralbl. 46: 254. 1891. (Röll 1891a)
- =Sphagnum fuscum var. flaccidum Röll, Bot. Centralbl. 46: 254. 1891. (Röll 1891a)
- =Sphagnum fuscum var. stellaris Röll, Bot. Centralbl. 46: 254. 1891. (Röll 1891a)
- =Sphagnum fuscum f. strictum Röll, Bot. Centralbl. 46: 254. 1891. (Röll 1891a)
- =Sphagnum fuscum var. gracile Röll, Bot. Centralbl. 46: 255. 1891. (Röll 1891a) ≡Sphagnum acutifolium var. gracile (Röll) Hérib., Mém. Acad. Sci. Clermont-Ferrand, sér. 2, 14: 444. 1899, nom. illeg.
- =Sphagnum fuscum var. luridum Huebener, Bot. Centralbl. 46: 255. 1891. (Röll 1891a)
- =Sphagnum vancouveriense Warnst., Hedwigia 33: 309. 1894. (Crum 1984b)
- =Sphagnum tenuifolium Warnst., Allg. Bot. Z. Syst. 1: 115. 1895. (Crum 1984b)
- =Sphagnum fuscum var. pallescens Russow ex Warnst., Schriften Naturf. Ges. Danzig 9(2): 154. 1897. (Warnstorf 1897)
- =Sphagnum fuscum var. virescens Russow ex Warnst., Schriften Naturf. Ges. Danzig 9(2): 154. 1897. (Warnstorf 1897)
- =Sphagnum fuscum var. deflexum Röll, Hedwigia 46: 209. 1907. (Röll 1907b)
- =Sphagnum fuscum var. strictiforme Röll, Hedwigia 46: 209. 1907. (Röll 1907b)
- =Sphagnum fuscum var. grandifolium G. Roth, Hedwigia 47: 326. 1908. (Roth 1908)
- =Sphagnum fuscum var. medium Russow, Pflanzenr. 51: 71. 1911. (Warnstorf 1911)
- =Sphagnum fuscum var. tenellum Warnst., Pflanzenr. 51: 71. 1911. (Warnstorf 1911)
- =Sphagnum fuscum var. tenuississimum Warnst., Pflanzenr. 51: 71. 1911. (Warnstorf 1911)
Sphagnum garysmithii H.A. Crum, J. Hattori Bot. Lab. 63: 85. 1987. (Crum 1987b; Costa 2021)
Sphagnum geraisense H.A. Crum, Bryologist 95: 424. 1992. (Crum 1992b; Costa 2021)
†Sphagnum giganteum Ananova, Pyl'tsa Neogen. Otlozh. Juga Russk. Ravn.: 103. 1974.
Sphagnum girgensohnii Russow, Beitr. Torfm.: 46. 1865. (Russow 1865; Hodgetts et al. 2020)

≡Sphagnum strictum Lindb., Contr. Fl. Crypt. As.: 263. 1872[1873], nom. illeg. (Lindberg 1872; Crum 1984b) ≡Sphagnum acutifolium subsp. girgensohnii (Russow) Cardot, Bull. Soc. Roy. Bot. Belgique 25(1): 90, 117. 1886. ≡Sphagnum nemoreum subsp. girgensohnii (Russow) Bott., Atti Reale Accad. Lincei, Mem. Cl. Sci. Fis., ser. 5, 13(1): 19. 1919.
- =Sphagnum girgensohnii var. squarrosulum Russow, Arch. Naturk. Liv- Ehst- Kurlands, Ser. 2, Biol. Naturk. 7: 125. 1865. (Warnstorf 1911) ≡Sphagnum strictum var. squarrosulum (Russow) Braithw., Monthly Microscop. J. 11: 257. 1874. ≡Sphagnum acutifolium var. squarrosulum (Russow) Cardot, Bull. Soc. Roy. Bot. Belgique 25(1): 91, 117. 1886, nom. illeg.
- =Sphagnum girgensohnii var. strictum Russow, Beitr. Torfm.: 47. 1865. (Russow 1865; Warnstorf 1911) ≡Sphagnum acutifolium var. strictum (Russow) Cardot, Bull. Soc. Roy. Bot. Belgique 25(1): 91, 117. 1886, nom. illeg.
- =Sphagnum hookeri Müll. Hal., Linnaea 38: 547. 1874. (Müller 1874a; Michaelis 2019)
- =Sphagnum girgensohnii var. pumilum Ångstr. ex Warnst., Eur. Torfm. (Warnstorf): 119. 1881. (Warnstorf 1881; Warnstorf 1911) ≡Sphagnum girgensohnii f. pumilum (Ångstr. ex Warnst.) Warnst., Pflanzenr. 51: 60. 1911.
- =Sphagnum girgensohnii var. speciosum Limpr., Jahresber. Schles. Ges. Vaterl. Cult. 58: 185. 1881. (Warnstorf 1911) ≡Sphagnum acutifolium var. speciosum (Limpr.) Hérib., Mém. Acad. Sci. Clermont-Ferrand, sér. 2, 14: 443. 1899, nom. illeg. ≡Sphagnum girgensohnii f. speciosum (Limpr.) Warnst., Pflanzenr. 51: 58. 1911.
- =Sphagnum girgensohnii var. laxifolium Warnst., Flora 65: 208. 1882. (Warnstorf 1911) ≡Sphagnum acutifolium var. laxifolium (Warnst.) Cardot, Bull. Soc. Roy. Bot. Belgique 25(1): 92, 117. 1886. ≡Sphagnum girgensohnii f. laxifolium (Warnst.) Warnst., Pflanzenr. 51: 59. 1911.
- =Sphagnum girgensohnii var. deflexum Schlieph., Abh. Thüring. Bot. Vereins "Irmischia" 3: 23. 1884. (Warnstorf 1911) ≡Sphagnum acutifolium var. deflexum (Schlieph.) Cardot, Bull. Soc. Roy. Bot. Belgique 25(1): 91, 117. 1886, nom. illeg.
- =Sphagnum girgensohnii var. densum Grav. ex Warnst., Hedwigia 23: 119. 1884. (Warnstorf 1884b; Warnstorf 1911) ≡Sphagnum acutifolium var. densum (Grav. ex Warnst.) Cardot, Bull. Soc. Roy. Bot. Belgique 25(1): 92. 1886, nom. illeg.
- =Sphagnum girgensohnii var. gracilescens Grav. ex Warnst., Hedwigia 23: 119. 1884. (Warnstorf 1884b; Warnstorf 1911) ≡Sphagnum acutifolium var. gracilescens (Grav. ex Warnst.) Cardot, Bull. Soc. Roy. Bot. Belgique 25(1): 91, 117. 1886, nom. illeg.
- =Sphagnum girgensohnii var. molle Grav. ex Warnst., Hedwigia 23: 119. 1884. (Warnstorf 1911)
- =Sphagnum girgensohnii var. pulchrum Grav. ex Warnst., Hedwigia 23: 119. 1884. (Warnstorf 1911)
- =Sphagnum strictum var. majus Lesq. & James, Man. Mosses N. America: 14. 1884. (Lesquereux & James 1884)
- =Sphagnum warnstorfii var. pseudopallens Röll, Flora 69: 105. 1886. (Röll 1886g)
- =Sphagnum warnstorfii var. subfibrosum Röll, Flora 69: 108. 1886. ≡Sphagnum girgensohnii var. subfibrosum (Röll) Cardot, Bull. Soc. Hist. Nat. Autun 10: 305 [Répert. Sphagnol. 73]. 1897. (Cardot 1897)
- =Sphagnum warnstorfii var. pulchrum Röll, Flora 69: 110. 1886. (Röll 1886g)
- =Sphagnum girgensohnii var. compactum Röll, Flora 69: 130. 1886. (Cardot 1897)
- =Sphagnum girgensohnii var. tenue Röll, Flora 69: 130. 1886. (Cardot 1897)
- =Sphagnum girgensohnii var. tenellum Röll, Flora 69: 131. 1886. (Cardot 1897)
- =Sphagnum girgensohnii var. albescens Röll, Flora 69: 132. 1886. (Warnstorf 1911)
- =Sphagnum girgensohnii f. capitatum Röll, Flora 69: 132. 1886. ≡Sphagnum girgensohnii var. capitatum (Röll) Röll, Hedwigia 46: 214. 1907. (Röll 1907b)
- =Sphagnum girgensohnii var. dimorphum Röll, Flora 69: 133. 1886. (Cardot 1897)
- =Sphagnum girgensohnii var. laxum Röll, Flora 69: 133. 1886. (Cardot 1897)
- =Sphagnum girgensohnii var. xerophilum Russow ex C.E.O. Jensen, Festskr. Bot. Foren. Kjøbenhavn: 96. 1890. (Warnstorf 1911)
- =Sphagnum godmanii Warnst., Hedwigia 29: 198. 1890. (Wijk et al. 1967)
- =Sphagnum girgensohnii var. molle Russow ex Warnst., Samml. Eur. Torfm. 2: 115. 1890, nom. illeg. (Warnstorf 1911)
- =Sphagnum girgensohnii var. sphaerocephalum Warnst., Hedwigia 32: 15. 1893. (Warnstorf 1911) ≡Sphagnum girgensohnii f. sphaerocephalum (Warnst.) Warnst., Pflanzenr. 51: 59. 1911.
- =Sphagnum girgensohnii var. teretiusculum Warnst., Hedwigia 32: 15. 1893. (Warnstorf 1911) ≡Sphagnum girgensohnii f. teretiusculum (Warnst.) Warnst., Pflanzenr. 51: 60. 1911.
- =Sphagnum girgensohnii var. commune Russow, Arch. Naturk. Liv- Ehst- Kurlands, Ser. 2, Biol. Naturk. 10(4): 502. 1894. (Russow 1894; Warnstorf 1911)
- =Sphagnum girgensohnii var. spectabile Russow, Arch. Naturk. Liv- Ehst- Kurlands, Ser. 2, Biol. Naturk. 10(4): 502. 1894. (Russow 1894; Warnstorf 1911)
- =Sphagnum girgensohnii var. cristatum Russow, Arch. Naturk. Liv- Ehst- Kurlands, Ser. 2, Biol. Naturk. 10: 501. 1894. (Warnstorf 1911)
- =Sphagnum girgensohnii var. koryphaeum Russow, Arch. Naturk. Liv- Ehst- Kurlands, Ser. 2, Biol. Naturk. 10: 501. 1894. (Warnstorf 1911) ≡Sphagnum girgensohnii f. koryphaeum (Russow) Warnst., Pflanzenr. 51: 58. 1911.
- =Sphagnum girgensohnii var. hygrophilum Russow, Arch. Naturk. Liv- Ehst- Kurlands, Ser. 2, Biol. Naturk. 10: 502. 1894. (Warnstorf 1911)
- =Sphagnum girgensohnii var. leptostachys Russow, Arch. Naturk. Liv- Ehst- Kurlands, Ser. 2, Biol. Naturk. 10: 503. 1894. (Warnstorf 1911)
- =Sphagnum girgensohnii var. stachyodes Russow, Arch. Naturk. Liv- Ehst- Kurlands, Ser. 2, Biol. Naturk. 10: 503. 1894. (Ochyra et al. 2003)
- =Sphagnum girgensohnii var. patulum Schlieph., Hedwigia 36: 327. 1897. (Röll 1897a)
- =Sphagnum girgensohnii var. strictiforme Röll, Hedwigia 42(Beibl.): 304. 1903. (Röll 1903b)
- =Sphagnum girgensohnii var. hydrophyllum Russow, Krypt.-Fl. Brandenburg, Leber- & Torfm.: 417. 1903. (Warnstorf 1902–1903)
- =Sphagnum girgensohnii var. subglaucum Péterfi, Magyar Bot. Lapok 5: 262. 1906. (Péterfi 1906)
- =Sphagnum girgensohnii var. intricatum Röll, Hedwigia 46: 214. 1907. (Röll 1907b)
- =Sphagnum mehneri Warnst., Hedwigia 47: 113. 1908. (Crum 1984b)
- =Sphagnum girgensohnii var. flavolimbatum G. Roth, Hedwigia 47: 326. 1908. (Roth 1908)
- =Sphagnum molle f. squarrosulum Warnst., Pflanzenr. 51: 132. 1911, nom. illeg. (Michaelis 2019)
- =Sphagnum girgensohnii var. immersum Warnst., Pflanzenr. 51: 59. 1911. (Warnstorf 1911)
- =Sphagnum girgensohnii var. microcephalum Warnst., Pflanzenr. 51: 59. 1911. (Warnstorf 1911)
- =Sphagnum girgensohnii var. prageri Warnst., Pflanzenr. 51: 60. 1911. (Warnstorf 1911)
- =Sphagnum girgensohnii var. flagellare Schlieph. ex Bott., Webbia 4: 121. 1913. (Bottini 1919)
- =Sphagnum girgensohnii var. brachycladum Bott., Atti Reale Accad. Lincei, Mem. Cl. Sci. Fis., ser. 5, 13(1): 38. 1919. (Bottini 1919)
- =Sphagnum veresczaginii Semenov, Trudy Altaisk. Podotd. Russk. Geogr. Obshch. 1: 12, 17. 1921. (Semenov 1921; Michaelis 2019)
- =Sphagnum veresczaginii var. squarrosum Semenov, Trudy Altaisk. Podotd. Russk. Geogr. Obshch. 1: 17. 1921. (Semenov 1921)
- =Sphagnum girgensohnii var. fragile Röll, Hedwigia 64: 207. 1923. (Röll 1923b)
Sphagnum globicephalum Müll. Hal. ex Warnst., Pflanzenr. 51: 398. 1911. (Warnstorf 1911; Costa 2021)
Sphagnum gomezii H.A. Crum, Cryptog. Bryol. Lichénol. 5: 295. 1984. (Crum 1984a; Michaelis 2019)
- =Sphagnum subdivisum H.A. Crum, Bryologist 92: 98. 1989. (Crum 1989b; Allen 1994)
Sphagnum gracilescens Hampe ex Müll. Hal., Bot. Zeitung (Berlin) 20: 327. 1862. (Müller 1862; Michaelis 2019)
- =Sphagnum submolluscum Hampe, Vidensk. Meddel. Dansk Naturhist. Foren. Kjøbenhavn ser. 3, 9–10: 251. 1878. (Michaelis 2019) ≡Sphagnum gracilescens var. submolluscum (Hampe) Warnst., Pflanzenr. 51: 356. 1911. (Warnstorf 1911)
- =Sphagnum trigonum var. laxifolium Warnst., Hedwigia 36: 159. 1897. (Costa 2021) ≡Sphagnum gracilescens var. laxifolium (Warnst.) Warnst., Pflanzenr. 51: 355. 1911. (Warnstorf 1911)
- =Sphagnum gracilescens var. minutulum Warnst., Hedwigia 36: 169. 1897. (Warnstorf 1911)
- =Sphagnum gracilescens var. angustifrons Warnst., Pflanzenr. 51: 356. 1911. (Warnstorf 1911)
- =Sphagnum gracilescens var. pellucidifolium Warnst., Pflanzenr. 51: 356. 1911. (Warnstorf 1911)
Sphagnum griseum Warnst., Bot. Centralbl. 76: 390. 1898. (Michaelis 2019)
Sphagnum guwassanense Warnst., Pflanzenr. 51: 424. 1911. (Warnstorf 1911; Michaelis 2019)
- =Sphagnum takedae S. Okamura, Icon. Pl. Koisik. 3(5): 109. 1917. (Shaw et al. 2013) ≡Sphagnum guwassanense subsp. takedae (S. Okamura) H. Suzuki, J. Sci. Hiroshima Univ., Ser. B, Div. 2, Bot. 2 Bot.: 288. 1954.
Sphagnum hampeanum Venturi, Musc. Trentino: 13. 1899, nom. dub. (Venturi 1899; Michaelis 2019)
Sphagnum harleyi H.A. Crum, J. Hattori Bot. Lab. 63: 80. 1987. (Crum 1987b; Costa 2021)
Sphagnum hegewaldii H.A. Crum, Contr. Univ. Michigan Herb. 23: 110. 2001. (Crum 2001; Michaelis 2019)
†Sphagnum heinrichsii Ignatov, Lamkovsky, Ignatova & Perkovsky, Arctoa 28(1): 2. 2019. (Ignatov et al. 2019)
Sphagnum helenicum Warnst., Hedwigia 30: 19. 1891. (Michaelis 2019)
Sphagnum henryense Warnst., Hedwigia 39: 107. 1900. (Michaelis 2019)
- =Sphagnum henryense var. bartlettii Warnst., Pflanzenr. 51: 445 (Sphagnol. Univ. 445). 1911. (Warnstorf 1911; McQueen & Andrus 2007)
Sphagnum hertelianum H.A. Crum, Novon 12(4): 441. 2002. (Crum 2002; Michaelis 2019)
Sphagnum herteri H.A. Crum, Fragm. Florist. Geobot. 40: 172. 1995. (Crum 1995b; Michaelis 2019)
Sphagnum homophyllum H.A. Crum, Bryologist 95: 425. 1992. (Crum 1992b; Michaelis 2019)
Sphagnum imbricatum Hornsch. ex Russow, Beitr. Torfm.: 21. 1865. (Russow 1865; McQueen & Andrus 2007)

≡Sphagnum austinii var. imbricatum (Hornsch. ex Russow) Lindb., Contr. Fl. Crypt. As.: 280. 1872[1873]. (Lindberg 1872) ≡Sphagnum cymbifolium f. imbricatum (Hornsch. ex Russow) Warnst., Eur. Torfm. (Warnstorf): 140. 1881. ≡Sphagnum cymbifolium var. imbricatum (Hornsch. ex Russow) Cardot, Bull. Soc. Roy. Bot. Belgique 25(1): 55, 109. 1886. ≡Sphagnum cymbifolium subsp. imbricatum (Hornsch. ex Russow) J.J. Amann, Fl. Mouss. Suisse 1: 24. 1918. (Amann & Meylan 1918) ≡Sphagnum palustre subsp. imbricatum (Hornsch. ex Russow) Bott., Atti Reale Accad. Lincei, Mem. Cl. Sci. Fis., ser. 5, 13(1): 22. 1919, nom. illeg.
- =Sphagnum cymbifolium var. condensatum Müll. Hal., Syn. Musc. Frond. 1: 92. 1848, nom. illeg. (Müller 1848; Wijk et al. 1967)
Sphagnum imperforatum H.A. Crum, Bryologist 92: 98. 1989. (Crum 1989b; Michaelis 2019)
Sphagnum incertum Warnst. & Cardot, Bull. Herb. Boissier, sér. 2, 7: 710. 1907. (Cardot 1907; Michaelis 2019)
Sphagnum incommodum H.A. Crum, J. Hattori Bot. Lab. 77: 240. 1994. (Crum 1994a; Michaelis 2019)
Sphagnum incundum Flatberg & K. Hassel, Phytotaxa 333(1): 14. 2018. (Kyrkjeeide et al. 2018; Michaelis 2019)
Sphagnum inexspectatum Flatberg, Lindbergia 30: 61. 2005. (Flatberg 2005a; Michaelis 2019)
Sphagnum inundatum Russow, Arch. Naturk. Liv- Ehst- Kurlands, Ser. 2, Biol. Naturk. 10: 390. 1894. (Russow 1894; Hodgetts et al. 2020)

≡Sphagnum subsecundum var. inundatum (Russow) C.E.O. Jensen, Bot. Faeröes 1: 139. 1901. ≡Sphagnum subsecundum subsp. inundatum (Russow) Bott., Atti Reale Accad. Lincei, Mem. Cl. Sci. Fis., ser. 5, 13(1): 21. 1919. ≡Sphagnum auriculatum var. inundatum (Russow) M.O. Hill, J. Bryol. 8: 439. 1975. (Hill 1975) ≡Sphagnum lescurii var. inundatum (Russow) Düll, Bryol. Beitr. 4: 11. 1984. (Düll 1984) ≡Sphagnum denticulatum var. inundatum (Russow) Kartt., Ann. Bot. Fenn. 29: 121. 1992. (Söderström et al. 1992)
- =Sphagnum subsecundum var. jensenii Warnst., Hedwigia 23: 100. 1884. (Warnstorf 1884b; Warnstorf 1911) ≡Sphagnum inundatum f. jensenii (Warnst.) Warnst., Pflanzenr. 51: 338. 1911.
- =Sphagnum subsecundum f. falcatum Cardot, Bull. Soc. Roy. Bot. Belgique 25: 66, 112. 1886. (Warnstorf 1911) ≡Sphagnum contortum var. falcatum (Cardot) Röll, Flora 69: 365. 1886. ≡Sphagnum rufescens var. falcatum (Cardot) Cardot, Bull. Soc. Hist. Nat. Autun 10: 387 [Répert. Sphagnol. 155]. 1897. (Cardot 1897)
- =Sphagnum subsecundum var. falcatum Schlieph. ex Röll, Flora 69: 356. 1886, nom. illeg. ≡Sphagnum inundatum var. falcatum Röll, Hedwigia 46: 238. 1907. (Röll 1907b)
- =Sphagnum subsecundum var. majus Röll, Flora 69: 356. 1886. ≡Sphagnum inundatum var. majus (Röll) Röll, Hedwigia 46: 238. 1907. (Röll 1907b)
- =Sphagnum subsecundum var. pseudosquarrosum Röll, Flora 69: 357. 1886. ≡Sphagnum inundatum var. pseudosquarrosum (Röll) Röll, Hedwigia 46: 238. 1907. (Röll 1907b)
- =Sphagnum subsecundum var. strictum Röll, Flora 69: 357. 1886, nom. illeg. ≡Sphagnum inundatum var. strictum Röll, Hedwigia 56: 88. 1915. (Röll 1915)
- =Sphagnum contortum var. patulum Röll, Flora 69: 361. 1886. ≡Sphagnum rufescens var. patulum (Röll) Cardot, Bull. Soc. Hist. Nat. Autun 10: 387 [Répert. Sphagnol. 155]. 1897. (Cardot 1897) ≡Sphagnum inundatum var. patulum (Röll) Röll, Hedwigia 56: 89. 1915. (Röll 1915) ≡Sphagnum subsecundum var. patulum (Röll) Bott., Atti Reale Accad. Lincei, Mem. Cl. Sci. Fis., ser. 5, 13(1): 57. 1919, nom. illeg.
- =Sphagnum pungens G. Roth, Eur. Torfm. (Roth): 62. 1906. (Roth 1906; Wijk et al. 1967) ≡Sphagnum inundatum var. pungens (G. Roth) Podp., Čas. Morav. Mus. Zemsk. 13: 41. 1913.
- =Sphagnum inundatum var. fluitans G. Roth, Eur. Torfm. (Roth): 63. 1906. (Roth 1906)
- =Sphagnum inundatum var. gracile G. Roth, Eur. Torfm. (Roth): 64. 1906. ≡Sphagnum pungens var. gracile (G. Roth) Röll, Hedwigia 56: 88. 1915. (Röll 1915)
- =Sphagnum subcontortum var. teretiusculum Röll, Hedwigia 46: 234. 1907. ≡Sphagnum pseudocontortum var. teretiusculum (Röll) Röll, Hedwigia 51: 111. 1911. (Röll 1911b)
- =Sphagnum inundatum var. ambiguum Röll, Hedwigia 46: 238. 1907. (Röll 1907b)
- =Sphagnum inundatum var. laxum Röll, Hedwigia 46: 238. 1907. (Röll 1907b)
- =Sphagnum subcontortum Röll, Hedwigia 46: 238. 1907, nom. illeg. (Röll 1907b) ≡Sphagnum bavaricum Warnst., Hedwigia 47: 84. 1907. (Michaelis 2019) ≡Sphagnum pseudocontortum Röll, Hedwigia 47: 342. 1908, nom. illeg. (Röll 1918) ≡Sphagnum subsecundum subsp. pseudocontortum Bott., Atti Reale Accad. Lincei, Mem. Cl. Sci. Fis., ser. 5, 13(1): 22. 1919. ≡Sphagnum subsecundum var. bavaricum (Warnst.) Åberg, Ark. Bot. 20A(1): 49. 1937.
- =Sphagnum subcontortum var. imbricatum Röll, Hedwigia 46: 239. 1907. ≡Sphagnum pseudocontortum var. imbricatum (Röll) Röll, Hedwigia 51: 111. 1911. (Röll 1911b)
- =Sphagnum subcontortum var. recurvum Röll, Hedwigia 46: 239. 1907. (Röll 1907b)
- =Sphagnum pungens var. abbreviatum G. Roth, Hedwigia 47: 328. 1908. (Roth 1908)
- =Sphagnum hercynicum Warnst., Pflanzenr. 51: 325. 1911. (Warnstorf 1911; Wijk et al. 1967) ≡Sphagnum inundatum var. hercynicum (Warnst.) H.K.G. Paul, Süsswasserflora (ed. 2) 14: 12. 1931.
- =Sphagnum inundatum f. brachycladum Warnst., Pflanzenr. 51: 337. 1911. (Warnstorf 1911) ≡Sphagnum subsecundum var. brachycladum (Warnst.) Bott., Atti Reale Accad. Lincei, Mem. Cl. Sci. Fis., ser. 5, 13(1): 57. 1919, nom. illeg.
- =Sphagnum inundatum f. densum Warnst., Pflanzenr. 51: 337. 1911. ≡Sphagnum inundatum var. densum (Warnst.) Sherrin, Handb. Brit. Sphagn.: 54. 1927. (Sherrin 1927)
- =Sphagnum inundatum f. eurycladum Warnst., Pflanzenr. 51: 337. 1911. ≡Sphagnum inundatum var. eurycladum (Warnst.) Sherrin, Handb. Brit. Sphagn.: 54. 1927. (Sherrin 1927)
- =Sphagnum inundatum var. ovalifolium Warnst., Pflanzenr. 51: 337. 1911. (Warnstorf 1911)
- =Sphagnum inundatum f. robustum Warnst., Pflanzenr. 51: 337. 1911. ≡Sphagnum inundatum var. robustum (Warnst.) Sherrin, Handb. Brit. Sphagn.: 54. 1927. (Sherrin 1927)
- =Sphagnum inundatum var. diversifolium Warnst., Pflanzenr. 51: 338 (Sphagnol. Univ. 338). 1911, nom. illeg. (Warnstorf 1911)
- =Sphagnum inundatum var. lancifolium Warnst., Pflanzenr. 51: 338 (Sphagnol. Univ. 338). 1911, nom. illeg. (Warnstorf 1911; Wijk et al. 1967)
- =Sphagnum novofundlandicum Warnst., Pflanzenr. 51: 351. 1911. (Warnstorf 1911; McQueen & Andrus 2007)
- =Sphagnum bavaricum var. microphyllum Warnst., Pflanzenr. 51: 392. 1911. (Warnstorf 1911)
- =Sphagnum bavaricum var. macrophyllum Warnst., Pflanzenr. 51: 393. 1911. (Warnstorf 1911)
- =Sphagnum bavaricum var. mesophyllum Warnst., Pflanzenr. 51: 393. 1911. (Warnstorf 1911)
- =Sphagnum armoricum Warnst., Pflanzenr. 51: 394. 1911, nom. dub. (Michaelis 2019)
- =Sphagnum bakeri Warnst., Pflanzenr. 51: 414. 1911. (Michaelis 2019)
- =Sphagnum bakeri var. dubium Warnst., Pflanzenr. 51: 415. 1911. (Warnstorf 1911)
- =Sphagnum bakeri var. perlaxum Warnst., Pflanzenr. 51: 415. 1911. (Warnstorf 1911)
- =Sphagnum pseudocontortum var. falcatum Röll, Hedwigia 51: 111. 1911. (Röll 1911b)
- =Sphagnum inundatum var. imbricatum Röll, Hedwigia 51: 112. 1911. (Röll 1911b)
- =Sphagnum inundatum var. laricinum Röll, Hedwigia 51: 112. 1911. (Röll 1911b) ≡Sphagnum subsecundum var. laricinum (Röll) Bott., Atti Reale Accad. Lincei, Mem. Cl. Sci. Fis., ser. 5, 13(1): 57. 1919, nom. illeg.
- =Sphagnum inundatum var. melanoderum Podp. & F. Schenk, Čas. Morav. Mus. Zemsk. 13: 41. 1913. (Podpěra 1913)
- =Sphagnum inundatum var. flagellare Röll, Hedwigia 56: 89. 1915. (Röll 1915)
- =Sphagnum inundatum var. submersum Röll, Hedwigia 56: 89. 1915. (Röll 1915) ≡Sphagnum subsecundum var. submersum (Röll) Bott., Atti Reale Accad. Lincei, Mem. Cl. Sci. Fis., ser. 5, 13(1): 58. 1919, nom. illeg.
- =Sphagnum hercynicum var. binsteadii Wheldon, J. Bot. 59: 188. 1921. (Wheldon 1921)
- =Sphagnum inundatum var. humile Röll, Hedwigia 64: 211. 1923. (Röll 1923b)
Sphagnum irwinii H.A. Crum, J. Hattori Bot. Lab. 63: 77. 1987. (Crum 1987b; Costa 2021)
Sphagnum islei Warnst., Hedwigia 30: 19. 1891. (Michaelis 2019)
Sphagnum itabense H.A. Crum & W.R. Buck, Brittonia 40: 191. 1988. (Crum & Buck 1988; Michaelis 2019)
Sphagnum jensenii H. Lindb., Bidr. Sphagnum cusp.: 5, 13. 1899. (Hodgetts et al. 2020)
- =Sphagnum cavifolium f. lapponicum Warnst., Eur. Torfm. (Warnstorf): 90. 1881. (Warnstorf 1881; Michaelis 2019)
- =Sphagnum recurvum var. porosum Schlieph. & Warnst., Flora 67: 482. 1884. (Michaelis 2019) ≡Sphagnum limprichtii var. porosum (Schlieph. & Warnst.) Röll, Flora 69: 183. 1886. ≡Sphagnum cuspidatum var. porosum (Schlieph. & Warnst.) Warnst., Bot. Gaz. 15: 222. 1890. ≡Sphagnum annulatum var. porosum (Schlieph. & Warnst.) Maass & Isov., Nova Hedwigia 14: 189. 1967[1968]. (Maass 1967c)
- =Sphagnum propinquum H. Lindb. ex Warnst., Krypt.-Fl. Brandenburg, Leber- & Torfm.: 356. 1903. (Isoviita 1966) ≡Sphagnum jensenii var. propinquum (H. Lindb. ex Warnst.) Warnst., Pflanzenr. 51: 200. 1911. (Warnstorf 1911)
- =Sphagnum jensenii var. falcatum G. Roth, Hedwigia 47: 325. 1908. (Roth 1908)
- =Sphagnum jensenii var. dusenioides Warnst., Pflanzenr. 51: 200. 1911. (Warnstorf 1911)
- =Sphagnum jensenii var. flavofuscescens Warnst., Pflanzenr. 51: 200. 1911. (Warnstorf 1911)
- =Sphagnum jensenii var. robustum Warnst., Pflanzenr. 51: 200. 1911. (Warnstorf 1911)
- =Sphagnum jensenii var. submersum H. Lindb., Pflanzenr. 51: 200. 1911. (Warnstorf 1911)
- =Sphagnum jensenii var. viride H. Lindb. ex Warnst., Pflanzenr. 51: 200. 1911. (Warnstorf 1911)
Sphagnum juliforme H.A. Crum, J. Hattori Bot. Lab. 77: 241. 1994. (Crum 1994a; Michaelis 2019)
Sphagnum junghuhnianum Dozy & Molk., Verh. Kon. Akad. Wetensch., Afd. Natuurk. 2(2): 5. 1854. (Dozy 1854; Michaelis 2019)

≡Sphagnum molle var. junghuhnianum (Dozy & Molk.) Röll, Flora 69: 331. 1886.
- =Sphagnum gedeanum Dozy & Molk., Verh. Kon. Akad. Wetensch., Afd. Natuurk. 2(5): 7. 1854. (Eddy 1977a) ≡Sphagnum junghuhnianum var. gedeanum (Dozy & Molk.) Warnst., Pflanzenr. 51: 116. 1911. (Warnstorf 1911)
- =Sphagnum thomsonii Müll. Hal., Linnaea 38: 545. 1874. (Müller 1874a; Eddy 1977a)
- =Sphagnum pseudomolle Warnst., Beih. Bot. Centralbl. 16: 247. 1904. (Michaelis 2019) ≡Sphagnum junghuhnianum var. pseudomolle (Warnst.) Warnst., Pflanzenr. 51: 117. 1911. (Warnstorf 1911) ≡Sphagnum junghuhnianum subsp. pseudomolle (Warnst.) H. Suzuki, Jap. J. Bot. 15: 194. 1956.
- =Sphagnum kiiense Warnst., Pflanzenr. 51: 82. 1911. (Warnstorf 1911; Eddy 1977a)
- =Sphagnum junghuhnianum f. roseum M. Fleisch., Hedwigia 69: 94. 1929. (Fleischer 1929; Eddy 1977a)
- =Sphagnum junghuhnianum var. semiporosum Dixon, J. Bot. 80: 1. 1942. (Dixon 1942; Eddy 1977a)
- =Sphagnum squarrosiforme Dixon & Sherrin, J. Bot. 80: 2. 1942. (Eddy 1977a)
Sphagnum kenaiense R.E. Andrus, Sida 22: 961. 2006. (Andrus 2006; McQueen & Andrus 2007)
Sphagnum khasianum Mitt., J. Proc. Linn. Soc., Bot., Suppl. 1(2): 156. 1859. (Mitten 1859b; Michaelis 2019)

≡Sphagnum subsecundum var. khasianum (Mitt.) C.E.O. Jensen, Symb. Sin. 4: 8. 1929. (Brotherus 1929)
- =Sphagnum obtusifolium Griff., Not. Pl. Asiat. 2: 386. 1849, nom. illeg. (Michaelis 2019)
Sphagnum kushiroense H. Suzuki, J. Jap. Bot. 16: 258. 1958. (Suzuki 1958; Michaelis 2019)
Sphagnum laegaardii H.A. Crum, J. Hattori Bot. Lab. 63: 83. 1987. (Crum 1987b; Michaelis 2019)
Sphagnum lankesteri H.A. Crum, Cryptog. Bryol. Lichénol. 5: 293. 1984. (Crum 1984a; Michaelis 2019)
Sphagnum laxirameum H.A. Crum, Contr. Univ. Michigan Herb. 20: 136. 1995. (Crum 1995a; Michaelis 2019)
Sphagnum laxulum H.A. Crum, Contr. Univ. Michigan Herb. 20: 136. 1995. (Crum 1995a; Costa 2021)
Sphagnum lenense H. Lindb., Trudy Imp. Bot. Sada Petra Velikago 33(1): 14. 1915. (Hodgetts et al. 2020)

Replaced synonym: Sphagnum lindbergii var. microphyllum Warnst., Hedwigia 32: 11, 16. 1893.

≡Sphagnum lindbergii subsp. lenense (H. Lindb.) Podp., Consp. Musc. Eur.: 33. 1954.
- =Sphagnum lindbergii f. brachydasycladum Warnst., Hedwigia 32: 11. 1893. (Michaelis 2019)
Sphagnum leonii H.A. Crum, Pabstia 5(2): 1. 1994. (Crum 1994b; Michaelis 2019)
Sphagnum lescurii Sull., Manual (ed. 2): 611. 1856. (Sullivant 1856; Shaw et al. 2012)

≡Sphagnum subsecundum var. laxum Lesq. & James, Man. Mosses N. America: 19. 1884. (Lesquereux & James 1884) ≡Sphagnum subsecundum var. lescurii (Sull.) Austin ex Rau, Final Rep. State Geol. Geol. Surv. New Jersey 2(1): 316. 1889.
- =Sphagnum laricinum var. floridanum Renauld & Cardot, Rev. Bryol. 12: 46. 1885. ≡Sphagnum subsecundum var. floridanum (Renauld & Cardot) Cardot, Bull. Soc. Roy. Bot. Belgique 26: 52. 1887. ≡Sphagnum contortum var. floridanum (Renauld & Cardot) Paris, Index Bryol. (ed. 2) 4: 267. 1905. (Paris 1904-1906) ≡Sphagnum plicatum var. floridanum (Renauld & Cardot) Warnst., Pflanzenr. 51: 361. 1911. (Warnstorf 1911)
- =Sphagnum plicatum Warnst., Hedwigia 30: 169. 1891. (Warnstorf 1891a; McQueen & Andrus 2007)
- =Sphagnum orlandense Warnst., Hedwigia 31: 177. 1892. (McQueen & Andrus 2007)
- =Sphagnum xerophilum Warnst., Hedwigia 36: 167. 1897. (Michaelis 2019)
- =Sphagnum franconiae Warnst., Pflanzenr. 51: 310. 1911. (Warnstorf 1911; Michaelis 2019)
- =Sphagnum franconiae var. robustum Warnst., Pflanzenr. 51: 311. 1911. (Warnstorf 1911)
- =Sphagnum franconiae var. tenellum Warnst., Pflanzenr. 51: 311. 1911. (Warnstorf 1911)
- =Sphagnum plicatum var. plumosum Warnst., Pflanzenr. 51: 361. 1911. (Warnstorf 1911)
- =Sphagnum wieboldtii H.A. Crum, Fragm. Florist. Geobot. 40: 167. 1995. (Crum 1995b; McQueen & Andrus 2007)
Sphagnum lewisii H.A. Crum, J. Hattori Bot. Lab. 74: 153. 1993. (Crum 1993a; Michaelis 2019)
Sphagnum liesneri H.A. Crum, Bryologist 98: 266. 1995. (Crum 1995c; Michaelis 2019)
Sphagnum limbatum Mitt., J. Linn. Soc., Bot. 12: 625. 1869. (Mitten 1869; Michaelis 2019)
- =Sphagnum antillarum Besch., Ann. Sci. Nat., Bot., sér. 6, 3: 263. 1876. (Bescherelle 1876; Sharp et al. 1994) ≡Sphagnum lesueurii Warnst., Hedwigia 29: 205. 1890, nom. illeg. (Allen 1994) ≡Sphagnum limbatum var. antillarum (Besch.) Warnst., Pflanzenr. 51: 112. 1911. (Warnstorf 1911)
- =Sphagnum tonduzii Warnst., Bot. Centralbl. 82: 40. 1900. (Sharp et al. 1994)
Sphagnum lindbergii Schimp., Öfvers. Kongl. Vetensk.-Akad. Förh. 14(4): 126. 1857. (Lindberg 1857; Hodgetts et al. 2020)
- =Sphagnum cuspidatum var. fulvum Sendtn., Deutschl. Krypt.-Fl. 2(3): 75. 1848. (Michaelis 2019)
- =Sphagnum lindbergii var. congestum Grav. ex Warnst., Hedwigia 23: 120. 1884. (Warnstorf 1884b; Cardot 1897)
- =Sphagnum lindbergii f. tenellum Limpr., Laubm. Deutschl. 1: 128. 1885. ≡Sphagnum lindbergii var. tenellum (Limpr.) Röll, Flora 69: 181. 1886. (Warnstorf 1911)
- =Sphagnum lindbergii var. mesophyllum Warnst., Samml. Eur. Torfm. 4: no. 359. 1894. (Warnstorf 1911)
- =Sphagnum lindbergii var. macrophyllum Warnst., J. Bot. 38: 310. 1900. (Warnstorf 1911)
- =Sphagnum lindbergii var. submersum Limpr., Laubm. Deutschl. 3: 621. 1901. (Limpricht 1885–1903)
- =Sphagnum lindbergii f. plumosum Warnst., Pflanzenr. 51: 185. 1911. (Ochyra et al. 2003)
- =Sphagnum lindbergii f. elegans Warnst., Pflanzenr. 51: 186. 1911. ≡Sphagnum lindbergii var. elegans (Warnst.) Bott., Atti Reale Accad. Lincei, Mem. Cl. Sci. Fis., ser. 5, 13(1): 44. 1919. (Bottini 1919)
Sphagnum lojense H.A. Crum, Contr. Univ. Michigan Herb. 23: 112. 2001. (Crum 2001; Michaelis 2019)
Sphagnum longicomosum Müll. Hal. ex Warnst., Bot. Jahrb. Syst. 27: 257. 1899. (Costa 2021)
- =Sphagnum bocainense H.A. Crum, Contr. Univ. Michigan Herb. 21: 153. 1997. (Crum 1997a; Costa 2021)
Sphagnum longistolo Müll. Hal., Hedwigia 36: 169. 1897. (Costa 2021)
- =Sphagnum weddelianum Besch. ex Warnst., Hedwigia 30: 163. 1891. (Costa 2021)
- =Sphagnum weddelianum var. fuscescens Warnst., Hedwigia 30: 164. 1891. (Warnstorf 1891a; Warnstorf 1911)
- =Sphagnum weddelianum var. pallescens Warnst., Hedwigia 30: 164. 1891. (Warnstorf 1891a; Warnstorf 1911)
- =Sphagnum hamiltonii H.A. Crum, Bryologist 98: 579. 1995. (Crum 1995d; Michaelis 2019)
Sphagnum luetzelburgii H.K.G. Paul ex H.A. Crum, Contr. Univ. Michigan Herb. 23: 109. 2001. (Crum 2001; Costa 2021)
Sphagnum luzonense Warnst., Bot. Centralbl. 76: 388. 1898. (Michaelis 2019)

≡Sphagnum subsecundum var. luzonense (Warnst.) C.E.O. Jensen, Symb. Sin. 4: 8. 1929. (Brotherus 1929)
- =Sphagnum luzonense var. macrophyllum Warnst., Pflanzenr. 51: 398. 1911. (Warnstorf 1911)
- =Sphagnum luzonense var. sordidum Warnst., Pflanzenr. 51: 398. 1911. (Warnstorf 1911)
- =Sphagnum densirameum Dixon, J. Siam Soc., Nat. Hist. Suppl. 9(1): 4. 1932. (Dixon 1932; Eddy 1977a)
Sphagnum ×lydiae Flatberg & K. Hassel, Bryologist 122(1): 55. 2019. (Kyrkjeeide et al. 2019)
Sphagnum macrophyllum Bernh. ex Brid., Bryol. Univ. 1: 10. 1826. (Bridel 1826; Michaelis 2019)

≡Isocladus macrophyllus (Bernh. ex Brid.) Lindb., Öfvers. Kongl. Vetensk.-Akad. Förh. 19: 134. 1862. (Lindberg 1862) ≡Sphagnopsis macrophylla (Bernh. ex Brid.) Trevis., Atti Soc. Ital. Sci. Nat. 19: 478. 1876. (Trevisan de Saint-Léon 1876)
- =Sphagnum macrophyllum var. brevifolium Cardot, Pflanzenr. 51: 169. 1911. (Warnstorf 1911)
- =Sphagnum macrophyllum var. burinense Maass, Bryologist 70: 181. 1967. (Maass 1967a; McQueen & Andrus 2007)
Sphagnum maegdefraui H. Suzuki, Nova Hedwigia 38: 53. 1983. (Mägdefrau 1983; Michaelis 2019)
Sphagnum magellanicum Brid., Muscol. Recent. 2(1): 24. 1798. (Bridel 1798; Hassel et al. 2018)

≡Sphagnum cymbifolium var. magellanicum (Brid.) P. Beauv., Prodr. Aethéogam.: 87. 1805. ≡Sphagnum palustre subsp. magellanicum (Brid.) Bott., Atti Reale Accad. Lincei, Mem. Cl. Sci. Fis., ser. 5, 13(1): 22. 1919.
- =Sphagnum andinum Hampe, Ann. Sci. Nat., Bot., sér. 5, 5: 334. 1866. (Hampe 1866; Churchill et al. 2000)
- =Sphagnum wallisii Müll. Hal., Linnaea 38: 573. 1874. (Müller 1874b; Churchill et al. 2000)
- =Sphagnum bicolor Besch., Bull. Soc. Bot. France 32: LXVIII. 1885. (Bescherelle 1885; Michaelis 2019)
- =Sphagnum cymbifolium var. brachycladum Cardot, Bull. Soc. Roy. Bot. Belgique 25(1): 46, 108. 1886, nom. illeg. ≡Sphagnum medium var. brachycladum Cardot, Bull. Soc. Hist. Nat. Autun 10: 331. 1897, nom. illeg. ≡Sphagnum magellanicum var. brachycladum Bott., Atti Soc. Tosc. Sci. Nat. Pisa Processi Verbali 24: 29. 1915. (Bottini 1915; Bottini 1919)
- =Sphagnum loricatum Müll. Hal., Flora 70: 409. 1887. (Müller 1887; Michaelis 2011)
- =Sphagnum tursum Müll. Hal., Flora 70: 410. 1887. (Müller 1887; Yano 1996)
- =Sphagnum arboreum Schimp. ex Warnst., Hedwigia 30: 32. 1891, nom. illeg. (Michaelis 2019)
- =Sphagnum vesiculare Müll. Hal. & Warnst., Hedwigia 36: 173. 1897. (Crum 1990a)
- =Sphagnum monzonense Warnst., Hedwigia 47: 82. 1907. (Wijk et al. 1967)
- =Sphagnum stewartii Warnst., Pflanzenr. 51: 508. 1911. (Warnstorf 1911; Churchill et al. 2000)
- =Sphagnum monzonense var. pallidosubfuscum Warnst., Pflanzenr. 51: 515 (Sphagnol. Univ. 515). 1911. (Warnstorf 1911; Churchill et al. 2000)
- =Sphagnum aureum C.B. McQueen, Bryologist 92: 405. 1989. (Allen 1994)
Sphagnum magellanicum subsp. grandirete (Warnst.) A. Eddy, Bull. Brit. Mus. (Nat. Hist.), Bot. 12: 87. 1985. (Eddy 1985; Michaelis 2019)

Basionym: Sphagnum grandirete Warnst., Magyar Bot. Lapok 1: 43. 1902. (Eddy 1985)
Sphagnum magellanicum Brid. subsp. magellanicum
Sphagnum magistri H.A. Crum, J. Hattori Bot. Lab. 77: 243. 1994. (Crum 1994a; Michaelis 2019)
Sphagnum magniae A.J. Shaw, Aguero & Nieto-Lugilde, Bryologist 126(1): 86. 2023. (Shaw et al. 2023)
Sphagnum magniporosum Flatberg, K. Hassel & Prestø, Lindbergia 45(01161): 11. 2022. (Flatberg et al. 2022)
Sphagnum majus (Russow) C.E.O. Jensen, Festskr. Bot. Foren. Kjøbenhavn: 106. 1890. (Hodgetts et al. 2020)

Basionym: Sphagnum cuspidatum var. majus Russow, Beitr. Torfm.: 58. 1865. (Russow 1865)

≡Sphagnum laxifolium var. majus (Russow) Röll, Flora 69: 236. 1886. ≡Sphagnum mendocinum var. majus (Russow) Warnst., Verh. Bot. Vereins Prov. Brandenburg 32: 212. 1891. ≡Sphagnum dusenii var. majus (Russow) Cardot, Bull. Soc. Hist. Nat. Autun 10: 289 [Répert. Sphagnol. 57]. 1897. (Cardot 1897)
- =Sphagnum cuspidatum var. plumulosum Russow, Beitr. Torfm.: 60. 1865, nom. illeg. (Russow 1865; Wijk et al. 1967)
- =Sphagnum variabile f. fallax Warnst., Eur. Torfm. (Warnstorf): 74. 1881. (Cardot 1897) ≡Sphagnum variabile var. fallax (Warnst.) Warnst., Flora 65: 550. 1882.
- =Sphagnum cuspidatum var. crispulum Warnst., Hedwigia 23: 124. 1884. (Warnstorf 1884b) ≡Sphagnum dusenii var. crispulum (Warnst.) Cardot, Bull. Soc. Hist. Nat. Autun 10: 289 [Répert. Sphagnol. 57]. 1897. (Cardot 1897; Warnstorf 1911)
- =Sphagnum cuspidatum var. deflexum Warnst., Hedwigia 23: 124. 1884. (Warnstorf 1884b; Michaelis 2019) ≡Sphagnum laxifolium var. deflexum (Warnst.) Röll, Flora 69: 236. 1886. ≡Sphagnum majus var. deflexum (Warnst.) C.E.O. Jensen, Festskr. Bot. Foren. Kjøbenhavn: 108. 1890. ≡Sphagnum mendocinum var. deflexum (Warnst.) Warnst., Verh. Bot. Vereins Prov. Brandenburg 32: 212. 1891. ≡Sphagnum dusenii var. deflexum (Warnst.) Cardot, Bull. Soc. Hist. Nat. Autun 10: 289 [Répert. Sphagnol. 57]. 1897. (Cardot 1897)
- =Sphagnum majus var. angustifolium C.E.O. Jensen, Festskr. Bot. Foren. Kjøbenhavn: 108. 1890. (Jensen 1890) ≡Sphagnum dusenii var. angustifolium (C.E.O. Jensen) Cardot, Bull. Soc. Hist. Nat. Autun 10: 289 [Répert. Sphagnol. 57]. 1897. (Cardot 1897)
- =Sphagnum majus var. fuscescens C.E.O. Jensen, Festskr. Bot. Foren. Kjøbenhavn: 108. 1890. (Jensen 1890) ≡Sphagnum dusenii var. fuscescens (C.E.O. Jensen) Cardot, Bull. Soc. Hist. Nat. Autun 10: 289 [Répert. Sphagnol. 57]. 1897. (Cardot 1897)
- =Sphagnum dusenii Warnst., Hedwigia 29(5): 214. 1890, nom. illeg. ≡Sphagnum cuspidatum subsp. dusenii Bott., Atti Reale Accad. Lincei, Mem. Cl. Sci. Fis., ser. 5, 13(1): 21. 1919. (Isoviita 1966)
- =Sphagnum mendocinum var. fallax Warnst., Verh. Bot. Vereins Prov. Brandenburg 32: 212. 1891. ≡Sphagnum dusenii var. fallax (Warnst.) Cardot, Bull. Soc. Hist. Nat. Autun 10: 289 [Répert. Sphagnol. 57]. 1897. (Cardot 1897; Warnstorf 1911)
- =Sphagnum mendocinum var. molle Warnst., Samml. Eur. Torfm.: no. 369. 1894. (Wijk et al. 1967)
- =Sphagnum dusenii var. plumosum Warnst., Krypt.-Fl. Brandenburg, Leber- & Torfm.: 393. 1903. (Warnstorf 1902–1903)
- =Sphagnum dusenii var. leptocladum Warnst., Krypt.-Fl. Brandenburg, Leber- & Torfm.: 399. 1903. (Warnstorf 1902–1903)
- =Sphagnum dusenii var. falcatum C.E.O. Jensen ex Warnst., Krypt.-Fl. Brandenburg, Leber- & Torfm.: 400. 1903, nom. illeg. (Warnstorf 1902–1903; Wijk et al. 1967)
- =Sphagnum dusenii var. macrocephalum Warnst., Krypt.-Fl. Brandenburg, Leber- & Torfm.: 401. 1903. (Warnstorf 1902–1903)
- =Sphagnum dusenii var. parvifolium Warnst., Krypt.-Fl. Brandenburg, Leber- & Torfm.: 401. 1903. (Warnstorf 1911)
- =Sphagnum dusenii var. brachycladum Röll, Hedwigia 46: 223. 1907. (Röll 1907b)
- =Sphagnum dusenii var. capitatum Röll, Hedwigia 46: 223. 1907. (Röll 1907b)
- =Sphagnum dusenii var. gracile Röll, Hedwigia 46: 223. 1907. (Röll 1907b)
- =Sphagnum dusenii var. strictiforme Röll, Hedwigia 46: 223. 1907. (Röll 1907b)
- =Sphagnum dusenii var. strictum Röll, Hedwigia 46: 223. 1907. (Röll 1907b)
- =Sphagnum dusenii var. tenellum Röll, Hedwigia 46: 223. 1907. (Röll 1907b)
- =Sphagnum dusenii var. crispulum Röll, Hedwigia 46: 224. 1907, nom. illeg. (Röll 1907b)
- =Sphagnum dusenii var. patulum Röll, Hedwigia 46: 224. 1907. (Röll 1907b)
- =Sphagnum dusenii var. robustum Röll, Hedwigia 46: 224. 1907. (Röll 1907b)
- =Sphagnum dusenii var. teres Röll, Hedwigia 46: 224. 1907. (Röll 1907b)
- =Sphagnum vogesiacum Warnst., Pflanzenr. 51: 277. 1911. (Warnstorf 1911; Crum 1984b)
- =Sphagnum dusenii var. compactum Röll, Hedwigia 51: 98. 1911. (Röll 1911b)
- =Sphagnum dusenii var. homocladum Röll, Hedwigia 51: 99. 1911. (Röll 1911b)
- =Sphagnum dusenii var. immersum Warnst., Rev. Bryol. 39: 81. 1912. (Henry 1912)
- =Sphagnum dusenii var. flagellare Röll, Hedwigia 56: 72. 1915. (Röll 1915)
- =Sphagnum majus subsp. norvegicum Flatberg, Kongel. Norske Vidensk. Selsk. Skr. (Trondheim) 1987(2): 1. 1987. (Flatberg 1987; Nieto-Lugilde et al. 2022)
Sphagnum mcqueenii R.E. Andrus, Sida 22: 959. 2006. (Andrus 2006; McQueen & Andrus 2007)
Sphagnum medium Limpr., Bot. Centralbl. 7: 313. 1881. (Limpricht 1881; Hassel et al. 2018)

≡Sphagnum cymbifolium subsp. medium (Limpr.) Cardot, Bull. Soc. Roy. Bot. Belgique 25(1): 44. 1886. ≡Sphagnum palustre subsp. medium (Limpr.) Russow, Schriften Naturf.-Ges. Univ. Dorpat. 3: 28. 1887. (Russow 1887) ≡Sphagnum cymbifolium var. medium (Limpr.) Velen., Rozpr. České Akad. Císaře Františka Josefa Vědy, Tř. 2, Vědy Math. Přír. 6(6): 73. 1897. (Velenovský 1897)
- =Sphagnum cymbifolium var. congestum Schimp., Mém. Hist. Nat. Sphaignes: 74. 1857. (Hassel et al. 2018) ≡Sphagnum latifolium var. congestum (Schimp.) J. Kickx f., Fl. Crypt. Flandres 1: 167. 1867, nom. illeg. ≡Sphagnum medium var. congestum (Schimp.) Warnst., Flora 66: 378. 1883. ≡Sphagnum magellanicum var. congestum (Schimp.) Röll, Hedwigia 56: 95. 1915. (Röll 1915) ≡Sphagnum palustre var. congestum (Schimp.) Jansen & Wacht., Ned. Kruidk. Arch. 53: 209. 1943, nom. illeg.
- =Sphagnum cymbifolium var. compactum Russow, Arch. Naturk. Liv- Ehst- Kurlands, Ser. 2, Biol. Naturk. 7: 158. 1865, nom. illeg. (Hassel et al. 2018)
- =Sphagnum cymbifolium var. purpurascens Russow, Arch. Naturk. Liv- Ehst- Kurlands, Ser. 2, Biol. Naturk. 7: 158. 1865. (Holyoak 2003) ≡Sphagnum palustre var. purpurascens (Russow) Lindb., Eur. Hvitmoss.: 20. 1882. (Lindberg 1882) ≡Sphagnum medium var. purpurascens (Russow) Warnst., Flora 67: 599. 1884.
- =Sphagnum cymbifolium f. purpurascens Warnst., Eur. Torfm. (Warnstorf): 136. 1881, nom. illeg. (Warnstorf 1911) ≡Sphagnum cymbifolium var. purpurascens Schlieph., Irmischia 2: 84. 1882, nom. illeg.
- =Sphagnum medium var. immersum Warnst., Hedwigia 23: 99. 1884. (Warnstorf 1884b) ≡Sphagnum cymbifolium var. immersum (Warnst.) C.E.O. Jensen, Festskr. Bot. Foren. Kjøbenhavn: 71. 1890, nom. illeg. ≡Sphagnum medium f. immersum (Warnst.) Warnst., Pflanzenr. 51: 489. 1911. (Warnstorf 1911) ≡Sphagnum magellanicum var. immersum (Warnst.) Röll, Hedwigia 56: 96. 1915. (Röll 1915)
- =Sphagnum cymbifolium f. viride Warnst. ex Cardot, Bull. Soc. Roy. Bot. Belgique 25(1): 46. 1886. ≡Sphagnum cymbifolium var. viride (Warnst. ex Cardot) C.E.O. Jensen, Festskr. Bot. Foren. Kjøbenhavn: 71. 1890. (Jensen 1890)
- =Sphagnum cymbifolium f. fuscescens Cardot, Bull. Soc. Roy. Bot. Belgique 25: 109. 1886, nom. illeg. (Cardot 1886)
- =Sphagnum cymbifolium f. purpureum Warnst. ex Cardot, Bull. Soc. Roy. Bot. Belgique 25: 109. 1886. (Cardot 1886)
- =Sphagnum medium f. roseum Röll, Flora 69: 421. 1886. ≡Sphagnum medium var. roseum (Röll) Warnst., Samml. Eur. Torfm. 1: no. 17, 18. 1888. (Holyoak 2003) ≡Sphagnum magellanicum var. roseum (Röll) C.E.O. Jensen, Danmarks Mosser 1: 295. 1915.
- =Sphagnum medium var. abbreviatum Röll, Flora 69: 422. 1886. ≡Sphagnum magellanicum var. abbreviatum (Röll) Röll, Hedwigia 56: 96. 1915. (Röll 1915)
- =Sphagnum medium var. brachycladum Röll, Flora 69: 422. 1886. ≡Sphagnum medium f. brachycladum (Röll) Warnst., Pflanzenr. 51: 489. 1911. (Warnstorf 1911)
- =Sphagnum medium f. deflexum Röll, Flora 69: 422. 1886. ≡Sphagnum magellanicum var. deflexum (Röll) Röll, Hedwigia 56: 96. 1915. (Röll 1915)
- =Sphagnum medium var. imbricatum Röll, Flora 69: 422. 1886. ≡Sphagnum magellanicum var. imbricatum (Röll) Röll, Hedwigia 56: 96. 1915. (Röll 1915)
- =Sphagnum medium f. strictum Röll, Flora 69: 422. 1886. ≡Sphagnum medium var. strictum (Röll) Röll, Hedwigia 36: 330. 1897. ≡Sphagnum magellanicum var. strictum (Röll) Röll, Hedwigia 56: 96. 1915. (Röll 1915)
- =Sphagnum medium var. laxum Röll, Flora 69: 423. 1886. ≡Sphagnum magellanicum var. laxum (Röll) Röll, Hedwigia 56: 96. 1915. (Röll 1915)
- =Sphagnum medium var. molle Schlieph., Flora 69: 423. 1886. (Wijk et al. 1967) ≡Sphagnum magellanicum var. molle (Schlieph.) Wijk & Margad., Taxon 14: 198. 1965. (Wijk & Margadant 1965)
- =Sphagnum medium var. pycnocladum Röll, Flora 69: 423. 1886. ≡Sphagnum magellanicum var. pycnocladum (Röll) Röll, Hedwigia 56: 96. 1915. (Röll 1915)
- =Sphagnum medium var. squarrosulum Röll, Flora 69: 423. 1886. ≡Sphagnum magellanicum var. squarrosulum (Röll) Röll, Hedwigia 56: 96. 1915. (Röll 1915)
- =Sphagnum medium var. virescens Warnst., Samml. Eur. Torfm. 1: no. 15, 16. 1888. (Warnstorf 1911) ≡Sphagnum magellanicum var. virescens (Warnst.) C.E.O. Jensen, Danmarks Mosser 1: 295. 1915.
- =Sphagnum medium var. obscurum Warnst., Samml. Eur. Torfm. 1: nos. 23, 24. 1888. (Holyoak 2003) ≡Sphagnum magellanicum var. obscurum (Warnst.) C.E.O. Jensen, Danmarks Mosser 1: 295. 1915.
- =Sphagnum medium f. versicolor Warnst., Bot. Gaz. 15: 253. 1890. ≡Sphagnum medium var. versicolor (Warnst.) Russow, Arch. Naturk. Liv- Ehst- Kurlands, Ser. 2, Biol. Naturk. 10: 487. 1894. (Russow 1894) ≡Sphagnum magellanicum var. versicolor (Warnst.) Wijk & Margad., Taxon 14: 198. 1965. (Wijk & Margadant 1965)
- =Sphagnum medium f. albescens Warnst., Bot. Gaz. 15: 254. 1890. (Warnstorf 1911) ≡Sphagnum medium var. albescens (Warnst.) Besch., Bull. Herb. Boissier 2: 400. 1894.
- =Sphagnum medium f. fuscescens Warnst., Bot. Gaz. 15: 254. 1890. (Warnstorf 1911) ≡Sphagnum medium var. fuscescens (Warnst.) Cardot, Bull. Soc. Hist. Nat. Autun 10: 331 [Répert. Sphagnol. 99]. 1897. (Cardot 1897) ≡Sphagnum cymbifolium var. fuscescens (Warnst.) Hérib., Mém. Acad. Sci. Clermont-Ferrand, sér. 2, 14: 440. 1899, nom. illeg. (Héribaud 1899)
- =Sphagnum medium var. laeve Warnst., Hedwigia 29: 186. 1890. (Warnstorf 1890c)
- =Sphagnum medium var. gracile Röll, Bot. Centralbl. 46: 410. 1891. ≡Sphagnum magellanicum var. gracile (Röll) Röll, Hedwigia 56: 96. 1915. (Röll 1915)
- =Sphagnum medium var. teres Russow, Arch. Naturk. Liv- Ehst- Kurlands, Ser. 2, Biol. Naturk. 10: 486. 1894. (Russow 1894)
- =Sphagnum medium var. plumosum Russow, Arch. Naturk. Liv- Ehst- Kurlands, Ser. 2, Biol. Naturk. 10: 487. 1894. (Warnstorf 1911) ≡Sphagnum medium f. plumosum (Russow) Warnst., Pflanzenr. 51: 490. 1911.
- =Sphagnum medium var. glaucescens Russow ex Warnst., Schriften Naturf. Ges. Danzig 9(2): 163. 1897. (Warnstorf 1897)
- =Sphagnum medium var. glaucopurpurascens Russow ex Warnst., Schriften Naturf. Ges. Danzig 9(2): 163. 1897. (Warnstorf 1897)
- =Sphagnum medium var. flavoglaucescens Russow ex Warnst., Schriften Naturf. Ges. Danzig 9(2): 164. 1897. (Warnstorf 1897)
- =Sphagnum medium var. roseopallescens Warnst., J. Bot. 38: 477. 1900. (Horrell 1900b)
- =Sphagnum medium var. violascens Warnst., J. Bot. 38: 478. 1900. (Horrell 1900b)
- =Sphagnum medium var. flavescens Warnst., Krypt.-Fl. Brandenburg, Leber- & Torfm.: 337. 1903. (Warnstorf 1902–1903) ≡Sphagnum magellanicum var. flavescens (Warnst.) C.E.O. Jensen, Danmarks Mosser 1: 295. 1915.
- =Sphagnum medium var. stachyoides Hamm., Mitt. Bayer. Bot. Ges. 2(19): 330. 1911. (Hammerschmid 1911)
- =Sphagnum magellanicum var. submersum Röll, Hedwigia 56: 96. 1915. (Röll 1915)
- =Sphagnum medium f. brachyorthocladum Wheldon, Syn. Eur. Sphagna: 42. 1917. (Wheldon 1917)
- =Sphagnum medium f. compactum Wheldon, Syn. Eur. Sphagna: 42. 1917. (Wheldon 1917)
Sphagnum mendocinum Sull. & Lesq., Icon. Musc. Suppl.: 12. 1874. (Sullivant 1874; Michaelis 2019)

≡Sphagnum cuspidatum var. mendocinum (Sull. & Lesq.) Cardot, Bull. Soc. Roy. Bot. Belgique 26: 56. 1887.
- =Sphagnum auriculatum Lesq., Mem. Calif. Acad. Sci. 1: 4. 1867, nom. illeg. (Wijk et al. 1967)
- =Sphagnum subsecundum var. longifolium Lesq., Mem. Calif. Acad. Sci. 1: 4. 1867. (Lesquereux & James 1884)
- =Sphagnum dusenii Russow & Warnst., Sitzungsber. Naturf.-Ges. Dorpat 9: 99, 107. 1889, nom. illeg. (Isoviita 1966)
- =Sphagnum mendocinum var. robustum Warnst., Hedwigia 32: 13. 1893. (McQueen & Andrus 2007)
- =Sphagnum mendocinum var. gracilescens Warnst., Hedwigia 32: 14. 1893. (McQueen & Andrus 2007)
- =Sphagnum mendocinum var. recurvum Röll, Hedwigia 36: 62. 1897. (McQueen & Andrus 2007)
Sphagnum meridense (Hampe) Müll. Hal., Syn. Musc. Frond. 1: 95. 1848. (Müller 1848; Michaelis 2019)

Basionym: Sphagnum acutifolium var. meridense Hampe, Linnaea 20: 66. 1847. (Hampe 1847)
- =Sphagnum subsecundum Müll. Hal., Linnaea 19: 209. 1847, nom. illeg. (Wijk et al. 1967)
- =Sphagnum platycladum Müll. Hal., Flora 70: 417. 1887. (Müller 1887; Sharp et al. 1994)
- =Sphagnum coryphaeum Warnst., Hedwigia 29: 189. 1890. (Churchill & Linares Castillo 1995)
- =Sphagnum costaricense Warnst., Bull. Herb. Boissier 2: 401. 1894. (Allen 1994)
- =Sphagnum trigonum Müll. Hal. & Warnst., Hedwigia 36: 158. 1897. (Yano 1996)
- =Sphagnum gracile Müll. Hal., Nuovo Giorn. Bot. Ital., n.s. 4: 7. 1897, nom. illeg. (Müller 1897; Wijk et al. 1967)
- =Sphagnum lechleri Warnst., Hedwigia 47: 105. 1907. (Wijk et al. 1967)
- =Sphagnum sociabile Warnst., Pflanzenr. 51: 102. 1911. (Warnstorf 1911; Wijk et al. 1967)
- =Sphagnum meridense var. pallescens Warnst., Pflanzenr. 51: 111. 1911. (Warnstorf 1911)
- =Sphagnum meridense var. roseum Warnst., Pflanzenr. 51: 111. 1911. (Warnstorf 1911)
- =Sphagnum meridense var. rufulum Warnst., Pflanzenr. 51: 111. 1911. (Warnstorf 1911)
- =Sphagnum meridense var. versicolor Warnst., Pflanzenr. 51: 111. 1911. (Warnstorf 1911)
- =Sphagnum meridense var. viride Warnst., Pflanzenr. 51: 111. 1911. (Warnstorf 1911)
- =Sphagnum ecuadorense Warnst., Pflanzenr. 51: 112. 1911. (Warnstorf 1911; Wijk et al. 1967)
Sphagnum microcarpum Warnst., Hedwigia 30(3): 170. 1891. (Warnstorf 1891a; McQueen & Andrus 2007)
- =Sphagnum microcarpum var. ramosum Warnst., Pflanzenr. 51: 370. 1911. (Warnstorf 1911)
Sphagnum microcuspidatum H.A. Crum, J. Hattori Bot. Lab. 63: 82. 1987. (Crum 1987b; Costa 2021)
Sphagnum microporum Warnst. ex Cardot, Beih. Bot. Centralbl. 17: 3. 1904. (Cardot 1904; Michaelis 2019)
- =Sphagnum oligoporum Warnst. & Cardot, Bull. Herb. Boissier, sér. 2, 7: 711. 1907. (Cardot 1907; Gao et al. 1999)
- =Sphagnum okamurae Warnst., Hedwigia 47: 97. 1908. (Iwatsuki 1991)
- =Sphagnum okamurae var. angustifolium Warnst., Pflanzenr. 51: 349. 1911. (Warnstorf 1911)
- =Sphagnum okamurae var. latifolium Warnst., Pflanzenr. 51: 349. 1911. (Warnstorf 1911)
- =Sphagnum okamurae var. robustum Warnst., Pflanzenr. 51: 349. 1911. (Warnstorf 1911)
Sphagnum minutulum Müll. Hal. & Warnst., Hedwigia 36: 166. 1897. (Michaelis 2019)
†Sphagnum minutum Ananova, Pyl'tsa Neogen. Otlozh. Juga Russk. Ravn.: 104. 1974.
Sphagnum mirabile Müll. Hal. & Warnst., Hedwigia 36: 161. 1897. (Michaelis 2019)
Sphagnum mirum Flatberg & Thingsgaard, Bryologist 106: 504. 2003[2004]. (Flatberg & Thingsgaard 2003; Hodgetts et al. 2020)
Sphagnum mississippiense R.E. Andrus, Mem. New York Bot. Gard. 45: 237. 1987. (Andrus 1987; Michaelis 2019)
Sphagnum missouricum Warnst. & Cardot, Hedwigia 47: 93. 1907. (Shaw et al. 2012)
Sphagnum miyabeanum Warnst., Pflanzenr. 51: 321. 1911. (Warnstorf 1911; Shaw et al. 2014)
Sphagnum molle Sull., Amer. J. Sci. Arts, ser. 2, 1: 73. 1846. (Gray 1846; McQueen & Andrus 2007)
- =Sphagnum tabulare Sull., Amer. J. Sci. Arts, ser. 2, 1: 73. 1846. (Gray 1846; Crum 1984b)
- =Sphagnum compactum var. ramulosum Müll. Hal., Syn. Musc. Frond. 1: 99. 1848. (Müller 1848; Michaelis 2019)
- =Sphagnum molluscoides Müll. Hal., Syn. Musc. Frond. 1: 99. 1848. (Müller 1848; Crum 1984b) ≡Sphagnum molle var. molluscoides (Müll. Hal.) Husn., Sphagnol. Eur.: 7. 1882. ≡Sphagnum tabulare var. molluscoides (Müll. Hal.) Pilous, Fl. ČSSR, C, Bryol. 1: 356. 1971. (Pilous 1971)
- =Sphagnum muelleri Schimp., Vers. Entw.-Gesch. Torfm.: 73. 1858. (Crum 1984b) ≡Sphagnum molle var. muelleri (Schimp.) Braithw., Monthly Microscop. J. 10: 220. 1873.
- =Sphagnum molle var. pulchellum Limpr. ex Warnst., Sphagnoth. Eur. 2: no. 83. 1882. (Warnstorf 1911) ≡Sphagnum molle f. pulchellum (Limpr. ex Warnst.) Cardot, Bull. Soc. Roy. Bot. Belgique 25: 110. 1886. ≡Sphagnum molle subf. pulchellum (Limpr. ex Warnst.) Warnst., Pflanzenr. 51: 131. 1911.
- =Sphagnum molle var. squarrosulum Grav. ex C.E.O. Jensen, Bot. Tidsskr. 13: 207. 1883. (Warnstorf 1911) ≡Sphagnum molle f. squarrosulum (Grav. ex C.E.O. Jensen) Cardot, Bull. Soc. Roy. Bot. Belgique 25: 110. 1886. ≡Sphagnum molle subf. squarrosulum (Grav. ex C.E.O. Jensen) Warnst., Pflanzenr. 51: 131. 1911.
- =Sphagnum molle var. compactum Grav. ex Warnst., Hedwigia 23: 104. 1884. (Warnstorf 1884b; Warnstorf 1911)
- =Sphagnum labradorense Warnst., Hedwigia 31: 174. 1892. (Crum 1984b)
- =Sphagnum molle f. heterophyllum Warnst., Pflanzenr. 51: 131. 1911. (Warnstorf 1911)
- =Sphagnum molle var. limbatum Warnst., Pflanzenr. 51: 132. 1911. (Warnstorf 1911)
Sphagnum moronum H.A. Crum, J. Hattori Bot. Lab. 77: 252. 1994. (Crum 1994a; Michaelis 2019)
†Sphagnum mosquense Rybakova, S.B. Smirnova, Chernyshova & Z.I. Kazakova, Zakon. Istor. Razv. Organ.: 116. 1982.
Sphagnum mucronatum Bruch & Schimp. ex Edmondston, Fl. Shetland: 41. 1845. (Edmondston 1845; Wijk et al. 1967)
Sphagnum multifibrosum X.J. Li & M. Zang, Acta Bot. Yunnan. 6: 77. 1984. (Li 1984; Michaelis 2019)
Sphagnum multiporosum H.A. Crum, J. Hattori Bot. Lab. 63: 78. 1987. (Crum 1987b; Costa 2021)
Sphagnum negrense Mitt., J. Linn. Soc., Bot. 12: 624. 1869. (Mitten 1869; Costa 2021)
Sphagnum nepalense H. Suzuki, Fl. E. Himalaya 1: 540. 1966. (Noguchi 1966; Michaelis 2019)
Sphagnum nitidulum Warnst., Pflanzenr. 51: 81. 1911. (Warnstorf 1911; Hodgetts et al. 2020)
Sphagnum noryungasense H.A. Crum, Contr. Univ. Michigan Herb. 23: 110. 2001. (Crum 2001; Michaelis 2019)
Sphagnum novoguineense M. Fleisch. & Warnst., Pflanzenr. 51: 520. 1911. (Warnstorf 1911; Michaelis 2019)
Sphagnum novozelandicum Mitt., J. Proc. Linn. Soc., Bot. 4: 99. 1859. (Mitten 1859a; Michaelis 2019)
- =Sphagnum cymbifolioides Müll. Hal., Bot. Zeitung (Berlin) 9: 546. 1851, nom. illeg. (Müller 1851; McCarthy 2006)
- =Sphagnum contortum var. intermedium Wilson, Fl. Tasman. 2: 162. 1859. (Seppelt 2006)
- =Sphagnum contortum var. laxum Wilson, Fl. Tasman. 2: 162. 1859. (Seppelt 2006)
- =Sphagnum contortum var. scorpioides Wilson, Fl. Tasman. 2: 162. 1859. (Seppelt 2006)
- =Sphagnum molliculum Mitt., Fl. Tasman. 2: 163. 1859. (Streimann & Klazenga 2002)
- =Sphagnum subcontortum Hampe, Linnaea 40: 301. 1876. (McCarthy 2006) ≡Sphagnum subsecundum var. subcontortum (Hampe) A. Jaeger, Ber. Thätigk. St. Gallischen Naturwiss. Ges. 1877–78: 364. 1880. (Jaeger & Sauerbeck 1879)
- =Sphagnum dubiosum Warnst., Hedwigia 30: 20. 1891. (McCarthy 2006)
- =Sphagnum pseudorufescens Warnst., Hedwigia 32: 6. 1893. (McCarthy 2006)
- =Sphagnum moorei Warnst., Allg. Bot. Z. Syst. 1: 204. 1895. (McCarthy 2006)
- =Sphagnum submolliculum Warnst., Hedwigia 36: 164. 1897. (McCarthy 2006)
- =Sphagnum sullivanii Müll. Hal., Gen. Musc. Frond.: 103. 1900. (Müller 1901; McCarthy 2006)
- =Sphagnum commutatum Warnst., Magyar Bot. Lapok 1: 45. 1902. (McCarthy 2006)
- =Sphagnum laticoma Müll. Hal. ex Warnst., Pflanzenr. 51: 312. 1911. (Warnstorf 1911; McCarthy 2006)
- =Sphagnum novozelandicum var. molle Warnst., Pflanzenr. 51: 332. 1911. (Warnstorf 1911)
- =Sphagnum novozelandicum var. commutatum Warnst., Pflanzenr. 51: 334. 1911. (Warnstorf 1911)
- =Sphagnum novozelandicum var. laxifolium Warnst., Pflanzenr. 51: 334. 1911. (Warnstorf 1911)
- =Sphagnum novozelandicum var. pauciporosum Warnst., Pflanzenr. 51: 334. 1911. (Warnstorf 1911)
- =Sphagnum novozelandicum var. pulvinatum Warnst., Pflanzenr. 51: 334. 1911. (Warnstorf 1911)
- =Sphagnum moorei var. macrophyllum Warnst., Pflanzenr. 51: 369. 1911. (Warnstorf 1911)
- =Sphagnum pseudorufescens var. flavescens Warnst., Pflanzenr. 51: 371. 1911. (Warnstorf 1911; Michaelis 2019)
- =Sphagnum pseudorufescens var. fuscorufescens Warnst., Pflanzenr. 51: 371. 1911. (Warnstorf 1911; Michaelis 2019)
- =Sphagnum pseudorufescens var. pallens Warnst., Pflanzenr. 51: 371. 1911. (Warnstorf 1911)
- =Sphagnum pseudorufescens var. virescens Warnst., Pflanzenr. 51: 371. 1911. (Warnstorf 1911; Michaelis 2019)
Sphagnum obliquefibrosum H.A. Crum, Bryologist 95: 426. 1992. (Crum 1992b; Costa 2021)
Sphagnum obtusum Warnst., Bot. Zeitung (Berlin) 35: 478. 1877. (Warnstorf 1877; Michaelis 2019)

≡Sphagnum recurvum var. obtusum (Warnst.) Warnst., Hedwigia 23: 121. 1884. (Warnstorf 1884b) ≡Sphagnum limprichtii var. obtusum (Warnst.) Röll, Flora 69: 182. 1886, nom. illeg. ≡Sphagnum cuspidatum subsp. obtusum (Warnst.) Hérib., Mém. Acad. Sci. Clermont-Ferrand, sér. 2, 14: 447. 1899. ≡Sphagnum recurvum subsp. obtusum (Warnst.) Meyl., Bull. Soc. Vaud. Sci. Nat. 41: 77. 1905.
- =Sphagnum cuspidatum var. pseudolindbergii C.E.O. Jensen, Cat. Pl. Soc. Bot. Copenh., Adnot.: 23. 1883. (Jensen 1883) ≡Sphagnum recurvum var. pseudolindbergii (C.E.O. Jensen) Warnst., Flora 67: 607. 1884. ≡Sphagnum limprichtii var. pseudolindbergii (C.E.O. Jensen) Röll, Flora 69: 181. 1886. ≡Sphagnum obtusum var. pseudolindbergii (C.E.O. Jensen) C.E.O. Jensen, Festskr. Bot. Foren. Kjøbenhavn: 111. 1890. (Warnstorf 1911) ≡Sphagnum obtusum f. pseudolindbergii (C.E.O. Jensen) Warnst., Krypt.-Fl. Brandenburg, Leber- & Torfm.: 377. 1903.
- =Sphagnum recurvum var. robustum Limpr., Flora 66: 274. 1883, nom. illeg. (Wijk et al. 1967)
- =Sphagnum recurvum f. tenellum Warnst., Hedwigia 23: 121. 1884. (Warnstorf 1911) ≡Sphagnum limprichtii var. tenellum (Warnst.) Röll, Flora 69: 183. 1886. ≡Sphagnum obtusum var. tenellum (Warnst.) Warnst., Verh. Bot. Vereins Prov. Brandenburg 32: 224. 1890. (Warnstorf 1891b)
- =Sphagnum recurvum var. fallax Warnst., Hedwigia 23: 122. 1884. (Warnstorf 1884b; Michaelis 2019) ≡Sphagnum pseudorecurvum var. fallax (Warnst.) Röll, Hedwigia 56: 76. 1915. (Röll 1915)
- =Sphagnum limprichtii Röll, Flora 69: 181. 1886, nom. illeg.
- =Sphagnum limprichtii var. ambiguum Schlieph., Flora 69: 181. 1886. (Röll 1927) ≡Sphagnum recurvum var. ambiguum (Schlieph.) Röll, Hedwigia 51: 105. 1911. ≡Sphagnum obtusum var. ambiguum (Schlieph.) Röll, Abh. Naturwiss. Vereins Bremen 26: 198. 1927.
- =Sphagnum limprichtii var. robustum Limpr. ex Röll, Flora 69: 181. 1886. ≡Sphagnum obtusum var. robustum (Limpr. ex Röll) Röll, Hedwigia 46: 230. 1907. (Röll 1907b)
- =Sphagnum limprichtii var. gracile Röll, Flora 69: 182. 1886. ≡Sphagnum obtusum var. gracile (Röll) Röll, Hedwigia 46: 230. 1907. (Röll 1907b)
- =Sphagnum limprichtii var. laricinum Röll, Flora 69: 182. 1886. ≡Sphagnum obtusum var. laricinum (Röll) Röll, Bot. Centralbl. 46: 375. 1891. (Röll 1891b)
- =Sphagnum limprichtii var. molle Röll, Flora 69: 182. 1886. ≡Sphagnum obtusum var. molle (Röll) Röll, Hedwigia 46: 230. 1907, nom. illeg. (Röll 1907b)
- =Sphagnum limprichtii var. squarrosulum Röll, Flora 69: 182. 1886. ≡Sphagnum obtusum var. squarrosulum (Röll) Röll, Hedwigia 56: 73. 1915. (Röll 1915)
- =Sphagnum limprichtii var. teres Röll, Flora 69: 182. 1886. ≡Sphagnum obtusum var. teres (Röll) Warnst., Verh. Bot. Vereins Prov. Brandenburg 32: 224. 1891. (Warnstorf 1911) ≡Sphagnum obtusum f. teres (Röll) Warnst., Pflanzenr. 51: 203. 1911.
- =Sphagnum obtusum var. fuscescens C.E.O. Jensen, Festskr. Bot. Foren. Kjøbenhavn: 111. 1890. (Warnstorf 1911)
- =Sphagnum obtusum var. molle C.E.O. Jensen, Festskr. Bot. Foren. Kjøbenhavn: 111. 1890. (Warnstorf 1911)
- =Sphagnum obtusum var. aquaticum Warnst., Verh. Bot. Vereins Prov. Brandenburg 32: 224. 1891. (Warnstorf 1911) ≡Sphagnum obtusum f. aquaticum (Warnst.) Warnst., Pflanzenr. 51: 203. 1911.
- =Sphagnum obtusum f. riparioides Warnst., Schriften Naturwiss. Vereins Harzes Wernigerode 7: 90. 1892. ≡Sphagnum obtusum var. riparioides (Warnst.) Warnst., Krypt.-Fl. Brandenburg, Leber- & Torfm.: 376. 1903. (Warnstorf 1902–1903; Ochyra et al. 2003) ≡Sphagnum recurvum var. riparioides (Warnst.) J.J. Amann, Fl. Mouss. Suisse 1: 194. 1918. (Amann & Meylan 1918)
- =Sphagnum zickendrathii Warnst., Bull. Soc. Imp. Naturalistes Moscou, n.s. 14: 273. 1900. (Zickendrath 1901; Crum 1984b) ≡Sphagnum obtusum var. zickendrathii (Warnst.) Warnst., Krypt.-Fl. Brandenburg, Leber- & Torfm.: 377. 1903. (Warnstorf 1902–1903)
- =Sphagnum obtusum var. fluitans Warnst., Krypt.-Fl. Brandenburg, Leber- & Torfm.: 378. 1903. (Warnstorf 1902–1903; Ochyra et al. 2003)
- =Sphagnum obtusum var. loeskeanum Warnst., Krypt.-Fl. Brandenburg, Leber- & Torfm.: 378. 1903. (Warnstorf 1902–1903)
- =Sphagnum obtusum var. recurviforme Warnst., Krypt.-Fl. Brandenburg, Leber- & Torfm.: 379. 1903. (Warnstorf 1902–1903; Ochyra et al. 2003)
- =Sphagnum obtusum var. pulchrum H. Lindb. ex Warnst., Krypt.-Fl. Brandenburg, Leber- & Torfm.: 380. 1903. (Warnstorf 1902–1903)
- =Sphagnum obtusum var. schwabianum Warnst., Denkschr. Bayer. Bot. Ges. Regensburg 10: 82. 1908. (Warnstorf 1911)
- =Sphagnum obtusum var. angustifolium Russow, Pflanzenr. 51: 205. 1911. (Warnstorf 1911)
- =Sphagnum obtusum var. plumosum Warnst., Pflanzenr. 51: 206. 1911. (Warnstorf 1911)
- =Sphagnum obtusum var. winteri Warnst., Pflanzenr. 51: 206. 1911. (Warnstorf 1911)
- =Sphagnum obtusum var. densum Röll, Hedwigia 62: 160. 1921. (Röll 1921)
- =Sphagnum obtusum var. flagellare Röll, Hedwigia 62: 160. 1921. (Röll 1921)
Sphagnum olafii Flatberg, J. Bryol. 17: 613. 1993. (Flatberg 1993a; Hodgetts et al. 2020)
Sphagnum oregonense R.E. Andrus, Bryologist 110: 123. 2007. (Andrus 2007a; McQueen & Andrus 2007)
Sphagnum orientale L.I. Savicz, Bot. Mater. Otd. Sporov. Rast. Bot. Inst. Komarova Akad. Nauk S.S.S.R. 7: 206. 1951. (Michaelis 2019)
Sphagnum ornatum H.A. Crum, Cryptog. Bryol. Lichénol. 6: 181. 1985. (Crum 1985; Costa 2021)
- =Sphagnum algentryi H.A. Crum, Bryologist 98: 265. 1995. (Crum 1995c; Michaelis 2019)
Sphagnum ovatum Hampe ex Müll. Hal., Linnaea 38: 546. 1874. (Müller 1874a; Michaelis 2019)
Sphagnum pacificum Flatberg, Bryologist 92: 116. 1989. (Flatberg 1989; Michaelis 2019)
Sphagnum pallens Warnst. & Cardot, Bull. Herb. Boissier, sér. 2, 7: 710. 1907. (Cardot 1907; Michaelis 2019)
Sphagnum palustre L., Sp. Pl. 2: 1106. 1753. (Linnaeus 1753; Michaelis 2019)
- =Sphagnum palustre var. latifolium Weiss, Pl. Crypt. Fl. Gott.: 263. 1770, nom. illeg. (Weiss 1770) ≡Sphagnum latifolium (Weiss) Hedw., Sp. Musc. Frond.: 27. 1801, nom. illeg. (Michaelis 2019) ≡Sphagnum cymbifolium var. latifolium (Weiss) Dozy & Molk., Prodr. Fl. Bat. 2(1): 74. 1851, nom. illeg.
- =Sphagnum cymbifolium Hedw., Fund. Hist. Nat. Musc. Frond. 2: 86. 1782, nom. illeg. (Hedwig 1782; McQueen & Andrus 2007)
- =Sphagnum obtusifolium Ehrh. ex Hoffm., Deutschl. Fl. 2: 21. 1795[1796]. (Hoffmann 1796; Crum 1984b) ≡Sphagnum palustre var. obtusifolium (Ehrh. ex Hoffm.) Lilj., Utkast Sv. Fl. (ed. 2): 393. 1798. (Liljeblad 1798) ≡Gymnostomum obtusifolium (Ehrh. ex Hoffm.) Rebent., Prodr. Fl. Neomarch.: 252. 1804. (Crum 1984b) ≡Sphagnum cymbifolium var. obtusifolium (Ehrh. ex Hoffm.) Dozy & Molk., Prodr. Fl. Bat. 2(1): 73. 1851.
- =Sphagnum cymbifolium var. longifolium Brid., Muscol. Recent. 2(1): 24. 1798. (Bridel 1798)
- =Sphagnum vulgare Michx., Fl. Bor.-Amer. 2: 285. 1803, nom. illeg. (Michaux 1803; Crum 1984b) ≡Sphagnum cymbifolium subsp. vulgare (Michx.) Warnst., Flora 65: 552. 1882, nom. illeg.
- =Sphagnum latifolium var. fluitans Turner, Muscol. Hibern. Spic.: 5. 1804. (Turner 1804) ≡Sphagnum cymbifolium var. fluitans (Turner) Brid., Muscol. Recent. Suppl. 1: 13. 1806. (Bridel 1806–1817) ≡Sphagnum obtusifolium var. fluitans (Turner) Hook. & Taylor, Muscol. Brit.: 3. 1818. (Hooker & Taylor 1818) ≡Sphagnum palustre var. fluitans (Turner) Röll, Hedwigia 56: 99. 1915. (Röll 1915)
- =Sphagnum cymbifolium var. americanum P. Beauv., Prodr. Aethéogam.: 87. 1805. (Wijk et al. 1967)
- =Sphagnum oblongum P. Beauv., Prodr. Aethéogam.: 88. 1805. (Michaelis 2019) ≡Sphagnum latifolium var. oblongum (P. Beauv.) Spreng., Syst. Veg. [Sprengel] 4(1): 147. 1827. (Sprengel 1827)
- =Sphagnum obtusifolium var. pycnocladum Mart., Fl. Crypt. Erlang.: 17. 1817. ≡Sphagnum cymbifolium var. pycnocladum (Mart.) Nees & Hornsch., Bryol. Germ. 1: 8. 1823. (Nees von Esenbeck et al. 1823) ≡Sphagnum cymbifolium f. pycnocladum (Mart.) Cardot, Bull. Soc. Roy. Bot. Belgique 25: 108. 1886. ≡Sphagnum palustre var. pycnocladum (Mart.) Röll, Hedwigia 56: 98. 1915. (Röll 1915)
- =Sphagnum obtusifolium var. vulgaris Hook. & Taylor, Muscol. Brit.: 3. 1818. (Hooker & Taylor 1818; Wijk et al. 1967)
- =Sphagnum cymbifolium var. squarrosulum Nees & Hornsch., Bryol. Germ. 1: 8. 1823. (Nees von Esenbeck et al. 1823) ≡Sphagnum glaucum H. Klinggr., Vers. Topogr. Fl. Westpreuss.: 126. 1880. (Klinggräff 1880; Crum 1984b) ≡Sphagnum palustre var. squarrosulum (Nees & Hornsch.) Venturi & Bott., Atti Soc. Crittog. Ital. 3: 72. 1884. ≡Sphagnum cymbifolium f. squarrosulum (Nees & Hornsch.) Cardot, Bull. Soc. Roy. Bot. Belgique 25: 108. 1886. ≡Sphagnum glaucum var. squarrosulum (Nees & Hornsch.) Röll, Flora 69: 425. 1886. ≡Sphagnum klinggraeffii Röll, Hedwigia 36: 330. 1897, nom. illeg. (Crum 1984b) ≡Sphagnum cymbifolium var. glaucum (H. Klinggr.) Péterfi, Magyar Bot. Lapok 5: 262. 1906, nom. illeg. ≡Sphagnum latifolium var. squarrosulum (Nees & Hornsch.) Jenn., Man. Mosses W. Pennsylvania: 29. 1913, nom. illeg. (Jennings 1913) ≡Sphagnum palustre subsp. klinggraeffii Bott., Atti Reale Accad. Lincei, Mem. Cl. Sci. Fis., ser. 5, 13(1): 22. 1919.
- =Sphagnum cymbifolioides Breutel, Flora 7: 435. 1824. (Crum 1984b) ≡Sphagnum cymbifolium var. cymbifolioides (Breutel) Steud., Nomencl. Bot. 2: 397. 1824. (Steudel 1824)
- =Sphagnum cymbifolium var. longissimum Brid., Bryol. Univ. 1: 4. 1826, nom. illeg. (Bridel 1826; Wijk et al. 1967)
- =Sphagnum obtusifolium var. americanum Sw., Adnot. Bot.: 71. 1829. (Swartz 1829; Wijk et al. 1967)
- =Sphagnum cymbifolium var. flaccidum Wallr., Fl. Crypt. Germ. 1: 109. 1831, nom. illeg. (Wallroth 1831; Wijk et al. 1967)
- =Sphagnum cymbifolium var. turgidum Girg., Arch. Naturk. Liv- Ehst- Kurlands, Ser. 2, Biol. Naturk. 2: 171. 1860, nom. illeg. (Girgensohn 1860a)
- =Sphagnum papillosum var. stenophyllum Braithw., Monthly Microscop. J. 9: 215. 1873. ≡Sphagnum cymbifolium var. stenophyllum (Braithw.) Dixon, Stud. Handb. Brit. Mosses: 7. 1896. (Dixon 1896)
- =Sphagnum pseudocymbifolium Müll. Hal., Linnaea 38: 547. 1874. (Müller 1874a; Karlin 2001) ≡Sphagnum palustre subsp. pseudocymbifolium (Müll. Hal.) A. Eddy, Bull. Brit. Mus. (Nat. Hist.), Bot. 5: 376. 1977. (Eddy 1977a)
- =Sphagnum cymbifolium var. fuscum Warnst., Verh. Bot. Vereins Prov. Brandenburg 18: 85. 1876. (Warnstorf 1876)
- =Sphagnum subbicolor Hampe, Flora 63: 440. 1880. (Isoviita 1966) ≡Sphagnum cymbifolium f. hampeanum Warnst., Eur. Torfm. (Warnstorf): 136. 1881. ≡Sphagnum cymbifolium var. hampeanum (Warnst.) Warnst., Bot. Centralbl. 9: 133. 1882. ≡Sphagnum cymbifolium var. subbicolor (Hampe) Warnst., Flora 67: 598. 1884, nom. illeg. ≡Sphagnum palustre subsp. subbicolor (Hampe) Bott., Atti Reale Accad. Lincei, Mem. Cl. Sci. Fis., ser. 5, 13(1): 22. 1919.
- =Sphagnum cymbifolium var. vulgare Warnst., Eur. Torfm. (Warnstorf): 133. 1881, nom. illeg. (Warnstorf 1881; Wijk et al. 1967)
- =Sphagnum cymbifolium f. brachycladum Warnst., Eur. Torfm. (Warnstorf): 134. 1881. ≡Sphagnum cymbifolium var. brachycladum (Warnst.) Delogne, Bull. Soc. Roy. Bot. Belgique 23: 82. 1884. ≡Sphagnum latifolium var. brachycladum (Warnst.) Jenn., Man. Mosses W. Pennsylvania: 29. 1913. (Jennings 1913) ≡Sphagnum palustre var. brachycladum (Warnst.) Röll, Hedwigia 56: 97. 1915. (Röll 1915)
- =Sphagnum cymbifolium f. laxum Warnst., Eur. Torfm. (Warnstorf): 134. 1881. ≡Sphagnum cymbifolium var. laxum (Warnst.) Warnst., Bot. Centralbl. 9: 134. 1882. ≡Sphagnum palustre var. laxum (Warnst.) Röll, Hedwigia 56: 98. 1915. (Röll 1915)
- =Sphagnum cymbifolium f. fuscescens Warnst., Eur. Torfm. (Warnstorf): 135. 1881. ≡Sphagnum cymbifolium var. fuscescens (Warnst.) Warnst., Sphagnoth. Eur. 2: no. 75. 1882. (Warnstorf 1911)
- =Sphagnum cymbifolium var. revolutum Warnst., Bot. Centralbl. 9: 98. 1882. (Zippel 2006)
- =Sphagnum cymbifolium var. atroviride Schlieph. ex Röll, Abh. Thüring. Bot. Vereins "Irmischia" 3: 29. 1884. (Warnstorf 1911) ≡Sphagnum glaucum var. atroviride (Schlieph. ex Röll) Röll, Flora 69: 426. 1886.
- =Sphagnum cymbifolium var. molle Schlieph. ex Röll, Abh. Thüring. Bot. Vereins "Irmischia" 3: 29. 1884. ≡Sphagnum palustre var. molle (Schlieph. ex Röll) Röll, Hedwigia 56: 98. 1915. (Röll 1915)
- =Sphagnum cymbifolium var. roellii Schlieph., Abh. Thüring. Bot. Vereins "Irmischia" 3: 29. 1884. ≡Sphagnum glaucum var. roellii (Schlieph.) Röll, Flora 69: 427. 1886. ≡Sphagnum klinggraeffii var. roellii (Schlieph.) Röll, Hedwigia 51: 115. 1911. (Röll 1911b)
- =Sphagnum palustre var. hampei Venturi & Bott., Atti Soc. Crittog. Ital. 3: 72. 1884. (Dalla Torre & Sarnthein 1903)
- =Sphagnum cymbifolium f. deflexum Grav. ex Warnst., Hedwigia 23(7): 97. 1884. (Warnstorf 1884b) ≡Sphagnum glaucum var. deflexum (Grav. ex Warnst.) Röll, Flora 69: 426. 1886. ≡Sphagnum klinggraeffii var. deflexum (Grav. ex Warnst.) Röll, Hedwigia 56: 99. 1915. (Röll 1915)
- =Sphagnum cymbifolium f. pycnocladum Grav. ex Warnst., Hedwigia 23: 97. 1884, nom. illeg. (Warnstorf 1884b)
- =Sphagnum cymbifolium var. deflexum Schlieph. ex Warnst., Hedwigia 23: 98. 1884. (Warnstorf 1884b) ≡Sphagnum cymbifolium f. deflexum (Schlieph. ex Warnst.) Cardot, Bull. Soc. Roy. Bot. Belgique 25: 108. 1886. ≡Sphagnum palustre var. deflexum (Schlieph. ex Warnst.) Röll, Hedwigia 56: 98. 1915. (Röll 1915)
- =Sphagnum cymbifolium f. globiceps Schlieph., Hedwigia 23: 98. 1884. ≡Sphagnum glaucum var. globiceps (Schlieph.) Röll, Flora 69: 426. 1886. ≡Sphagnum cymbifolium var. globiceps (Schlieph.) Paris, Index Bryol.: 1187. 1898. ≡Sphagnum palustre var. globiceps (Schlieph.) Röll, Hedwigia 56: 98. 1915. (Röll 1915)
- =Sphagnum cymbifolium f. immersum Grav. ex Warnst., Hedwigia 23: 98. 1884. (Warnstorf 1884b; Wijk et al. 1967) ≡Sphagnum glaucum var. immersum (Grav. ex Warnst.) Röll, Flora 69: 426. 1886. ≡Sphagnum cymbifolium subf. immersum (Grav. ex Warnst.) Warnst., Pflanzenr. 51: 464. 1911. ≡Sphagnum palustre var. immersum (Grav. ex Warnst.) Röll, Hedwigia 60: 19. 1918.
- =Sphagnum cymbifolium var. purpurascens Warnst., Hedwigia 23: 98. 1884, nom. illeg. (Warnstorf 1911)
- =Sphagnum cymbifolium var. pallescens Warnst. ex Cardot, Bull. Soc. Roy. Bot. Belgique 25(1): 46, 108. 1886. (Suzuki 2016) ≡Sphagnum medium var. pallescens (Warnst. ex Cardot) Warnst., Samml. Eur. Torfm.: 202. 1892. ≡Sphagnum magellanicum var. pallescens (Warnst. ex Cardot) C.E.O. Jensen, Danmarks Mosser 1: 295. 1915.
- =Sphagnum cymbifolium var. macrocephalum Cardot ex Bernet, Rev. Bryol. 13(3): 43. 1886. (Cardot 1886) ≡Sphagnum cymbifolium f. macrocephalum (Cardot ex Bernet) Cardot, Bull. Soc. Roy. Bot. Belgique 25: 108. 1886.
- =Sphagnum cymbifolium var. compactum Schlieph. & Warnst. ex Cardot, Bull. Soc. Roy. Bot. Belgique 25: 43. 1886, nom. illeg. ≡Sphagnum palustre var. compactum Röll, Hedwigia 56: 97. 1915. (Röll 1915)
- =Sphagnum glaucum var. congestum Röll, Flora 69: 424. 1886. ≡Sphagnum klinggraeffii var. congestum (Röll) Röll, Hedwigia 36: 330. 1897. ≡Sphagnum cymbifolium var. congestum (Röll) Paris, Index Bryol. (ed. 2) 4: 271. 1905, nom. illeg. (Paris 1904-1906) ≡Sphagnum palustre var. congestum (Röll) Bott., Atti Reale Accad. Lincei, Mem. Cl. Sci. Fis., ser. 5, 13(1): 73. 1919. (Bottini 1919)
- =Sphagnum glaucum var. contortum Röll, Flora 69: 424. 1886. ≡Sphagnum klinggraeffii var. contortum (Röll) Röll, Hedwigia 36: 330. 1897. ≡Sphagnum cymbifolium var. contortum (Röll) Paris, Index Bryol. (ed. 2) 4: 271. 1905. (Paris 1904-1906) ≡Sphagnum palustre var. contortum (Röll) Bott., Atti Reale Accad. Lincei, Mem. Cl. Sci. Fis., ser. 5, 13(1): 73. 1919. (Bottini 1919)
- =Sphagnum glaucum var. imbricatum Röll, Flora 69: 424. 1886. ≡Sphagnum klinggraeffii var. imbricatum (Röll) Röll, Hedwigia 42(Beibl.): 28. 1903. ≡Sphagnum palustre var. imbricatum (Röll) Bott., Atti Reale Accad. Lincei, Mem. Cl. Sci. Fis., ser. 5, 13(1): 73. 1919, nom. illeg. (Bottini 1919)
- =Sphagnum glaucum var. microphyllum Röll, Flora 69: 424. 1886. ≡Sphagnum klinggraeffii var. microphyllum (Röll) Röll, Hedwigia 51: 115. 1911. (Röll 1911b)
- =Sphagnum glaucum var. laxum Röll, Flora 69: 425. 1886. ≡Sphagnum cymbifolium var. laxum (Röll) Paris, Index Bryol.: 1188. 1898, nom. illeg. ≡Sphagnum klinggraeffii var. laxum (Röll) Paris, Index Bryol.: 1196. 1898. ≡Sphagnum cymbifolium f. laxum (Röll) Warnst., Pflanzenr. 51: 464. 1911, nom. illeg. ≡Sphagnum palustre var. laxum (Röll) Bott., Atti Reale Accad. Lincei, Mem. Cl. Sci. Fis., ser. 5, 13(1): 73. 1919, nom. illeg. (Bottini 1919)
- =Sphagnum glaucum var. patulum Röll, Flora 69: 425. 1886. ≡Sphagnum klinggraeffii var. patulum (Röll) Röll, Hedwigia 56: 99. 1915. (Röll 1915) ≡Sphagnum palustre var. patulum (Röll) Bott., Atti Reale Accad. Lincei, Mem. Cl. Sci. Fis., ser. 5, 13(1): 73. 1919. (Bottini 1919)
- =Sphagnum glaucum var. rigidum Röll, Flora 69: 425. 1886. (Cardot 1897)
- =Sphagnum glaucum var. brachycladum Röll, Flora 69: 426. 1886. ≡Sphagnum klinggraeffii var. brachycladum (Röll) Röll, Hedwigia 42(Beibl.): 28. 1903. ≡Sphagnum palustre var. brachycladum (Röll) Bott., Atti Reale Accad. Lincei, Mem. Cl. Sci. Fis., ser. 5, 13(1): 73. 1919, nom. illeg. (Bottini 1919)
- =Sphagnum glaucum var. pycnocladum Röll, Flora 69: 426. 1886. ≡Sphagnum klinggraeffii var. pycnocladum (Röll) Röll, Hedwigia 36: 330. 1897. ≡Sphagnum palustre var. pycnocladum (Röll) Bott., Atti Reale Accad. Lincei, Mem. Cl. Sci. Fis., ser. 5, 13(1): 74. 1919, nom. illeg. (Bottini 1919)
- =Sphagnum glaucum var. ochraceum Röll, Flora 69: 427. 1886. (Warnstorf 1911)
- =Sphagnum glaucum var. platyphyllum Röll, Flora 69: 427. 1886. ≡Sphagnum cymbifolium var. platyphyllum (Röll) Paris, Index Bryol. (ed. 2) 4: 272. 1905. (Paris 1904-1906) ≡Sphagnum klinggraeffii var. platyphyllum (Röll) Röll, Hedwigia 60: 27. 1918. (Röll 1918)
- =Sphagnum cymbifolium f. repens Röll, Flora 69: 467. 1886. ≡Sphagnum palustre var. repens (Röll) Röll, Hedwigia 56: 97. 1915. (Röll 1915) ≡Sphagnum cymbifolium var. repens (Röll) Bott., Atti Reale Accad. Lincei, Mem. Cl. Sci. Fis., ser. 5, 13(1): 69. 1919.
- =Sphagnum cymbifolium f. rigidum Röll, Flora 69: 467. 1886. ≡Sphagnum cymbifolium var. rigidum (Röll) Röll, Hedwigia 51: 115. 1912. ≡Sphagnum palustre var. rigidum (Röll) Röll, Hedwigia 56: 98. 1915. (Röll 1915)
- =Sphagnum cymbifolium var. imbricatum Röll, Flora 69: 468. 1886, nom. illeg. (Wijk et al. 1969)
- =Sphagnum assamicum Müll. Hal., Flora 70: 411. 1887. (Eddy 1977a)
- =Sphagnum palustre subsp. cymbifolium Russow, Schriften Naturf.-Ges. Univ. Dorpat. 3: 28. 1887, nom. illeg. (Russow 1887; Wijk et al. 1967)
- =Sphagnum cymbifolium var. glaucescens C.E.O. Jensen, Festskr. Bot. Foren. Kjøbenhavn: 69. 1890. (Ochyra et al. 2003)
- =Sphagnum glaucum var. tenue Röll, Bot. Centralbl. 46: 410. 1891. ≡Sphagnum cymbifolium var. tenue (Röll) Paris, Index Bryol.: 1188. 1898. (Paris 1894-1898)
- =Sphagnum glaucum var. schliephackeanum Röll, Bot. Centralbl. 46: 411. 1891. ≡Sphagnum cymbifolium var. schliephackeanum (Röll) Paris, Index Bryol.: 1188. 1898. ≡Sphagnum palustre var. schliephackeanum (Röll) Wijk & Margad., Taxon 14: 198. 1965. (Wijk & Margadant 1965)
- =Sphagnum cymbifolium var. virescens Russow, Arch. Naturk. Liv- Ehst- Kurlands, Ser. 2, Biol. Naturk. 10: 106. 1894. (Russow 1894; Warnstorf 1911) ≡Sphagnum palustre var. virescens (Russow) Ihsiba, Cat. Mosses Japan: 9. 1929. (Ihsiba 1929)
- =Sphagnum cymbifolium var. fuscoflavescens Russow, Samml. Eur. Torfm. 4: no. 322. 1894. (Warnstorf 1911)
- =Sphagnum cymbifolium var. fuscorubescens Warnst., Samml. Eur. Torfm. 4: no. 323. 1894. (Warnstorf 1911)
- =Sphagnum japonicum Warnst., Allg. Bot. Z. Syst. 1: 230. 1895. (Crum 1984b)
- =Sphagnum lonchocladum Müll. Hal., Flora 82: 436. 1896. (Müller 1896; Karlin 2001) ≡Sphagnum antarcticum var. lonchocladum (Müll. Hal.) Warnst., Pflanzenr. 51: 155. 1911. (Warnstorf 1911)
- =Sphagnum cymbifolium var. flavoglaucescens Russow ex Warnst., Schriften Naturf. Ges. Danzig 9(2): 160. 1897. (Warnstorf 1897)
- =Sphagnum cymbifolium var. fuscoglaucescens Warnst., Schriften Naturf. Ges. Danzig 9(2): 161. 1897. (Warnstorf 1897)
- =Sphagnum cymbifolium var. fuscopallens Warnst., Schriften Naturf. Ges. Danzig 9(2): 161. 1897. (Warnstorf 1897)
- =Sphagnum cymbifolium var. glaucopallens Warnst., Schriften Naturf. Ges. Danzig 9(2): 161. 1897. (Warnstorf 1897)
- =Sphagnum cymbifolium var. pallescens Warnst., Schriften Naturf. Ges. Danzig 9(2): 161. 1897, nom. illeg. (Warnstorf 1897) ≡Sphagnum palustre var. pallescens Ihsiba, Cat. Mosses Japan: 9. 1929. (Ihsiba 1929)
- =Sphagnum suberythrocalyx Müll. Hal. ex Warnst., Hedwigia 30: 158. 1899. (Yano 1996)
- =Sphagnum cymbifolium var. carneopallescens Jaap, Verh. Bot. Vereins Prov. Brandenburg 43: 60. 1901. (Jaap 1901)
- =Sphagnum cymbifolium var. flavescens Russow ex Warnst., Krypt.-Fl. Brandenburg, Leber- & Torfm.: 327. 1903. (Warnstorf 1911)
- =Sphagnum cymbifolium var. versicolor Warnst., Krypt.-Fl. Brandenburg, Leber- & Torfm.: 328. 1903. (Warnstorf 1902–1903)
- =Sphagnum sulphureum Warnst., Hedwigia 47: 77. 1907. (Crum 1984b)
- =Sphagnum japonicum var. gracile Warnst., Pflanzenr. 51: 460. 1911. (Warnstorf 1911)
- =Sphagnum japonicum var. macrophyllum Warnst., Pflanzenr. 51: 460. 1911. (Warnstorf 1911)
- =Sphagnum cymbifolium var. glaucescens Warnst., Pflanzenr. 51: 463 (Sphagnol. Univ. 463). 1911, nom. illeg. (Warnstorf 1911)
- =Sphagnum cymbifolium var. rubescens Warnst., Pflanzenr. 51: 464. 1911. (Warnstorf 1911)
- =Sphagnum cymbifolium var. flavofuscescens Warnst., Pflanzenr. 51: 465. 1911. (Warnstorf 1911)
- =Sphagnum cymbifolium var. flavovirescens Warnst., Pflanzenr. 51: 465. 1911. (Warnstorf 1911)
- =Sphagnum subbicolor var. compactum Röll, Webbia 4: 136. 1913. ≡Sphagnum palustre var. compactum (Röll) Bott., Atti Reale Accad. Lincei, Mem. Cl. Sci. Fis., ser. 5, 13(1): 75. 1919, nom. illeg. (Bottini 1919)
- =Sphagnum subbicolor var. patulum Röll, Webbia 4: 136. 1913. ≡Sphagnum palustre var. patulum (Röll) Bott., Atti Reale Accad. Lincei, Mem. Cl. Sci. Fis., ser. 5, 13(1): 77. 1919. (Bottini 1919)
- =Sphagnum cymbifolium var. microphyllum Röll ex Bott., Webbia 4: 138. 1913. (Bottini 1913)
- =Sphagnum subbicolor var. pycnocladum Röll ex Bott., Atti Soc. Tosc. Sci. Nat. Pisa Processi Verbali 24: 29. 1915. (Bottini 1915; Bottini 1919) ≡Sphagnum palustre var. pycnocladum (Röll ex Bott.) Bott., Atti Reale Accad. Lincei, Mem. Cl. Sci. Fis., ser. 5, 13(1): 77. 1919, nom. illeg.
- =Sphagnum palustre var. gracile Röll ex Bott., Atti Soc. Tosc. Sci. Nat. Pisa Processi Verbali 24: 30. 1915. (Bottini 1915)
- =Sphagnum palustre var. imbricatum Röll, Hedwigia 56: 97. 1915. (Röll 1915; Warnstorf 1911)
- =Sphagnum cymbifolium f. confertum Wheldon, Syn. Eur. Sphagna: 41. 1917, nom. illeg. (Wheldon 1917)
- =Sphagnum cymbifolium f. flagelliferum Wheldon, Syn. Eur. Sphagna: 41. 1917. (Wheldon 1917)
- =Sphagnum cymbifolium var. subcarneum J.J. Amann, Fl. Mouss. Suisse 1: 193. 1918. (Amann & Meylan 1918)
- =Sphagnum cymbifolium var. patulum Bott., Atti Reale Accad. Lincei, Mem. Cl. Sci. Fis., ser. 5, 13(1): 71. 1919. (Bottini 1919)
- =Sphagnum palustre var. repens Bott., Atti Reale Accad. Lincei, Mem. Cl. Sci. Fis., ser. 5, 13(1): 75. 1919, nom. illeg. (Bottini 1919)
- =Sphagnum palustre var. deflexum Bott., Atti Reale Accad. Lincei, Mem. Cl. Sci. Fis., ser. 5, 13(1): 76. 1919, nom. illeg. (Bottini 1919)
- =Sphagnum palustre var. squarrosulum Bott., Atti Reale Accad. Lincei, Mem. Cl. Sci. Fis., ser. 5, 13(1): 76. 1919, nom. illeg. (Bottini 1919)
- =Sphagnum palustre var. strictum Bott., Atti Reale Accad. Lincei, Mem. Cl. Sci. Fis., ser. 5, 13(1): 76. 1919. (Bottini 1919)
- =Sphagnum palustre var. capitatum Bott., Atti Reale Accad. Lincei, Mem. Cl. Sci. Fis., ser. 5, 13(1): 77. 1919. (Bottini 1919)
- =Sphagnum palustre var. gracile Röll, Hedwigia 64: 212. 1923, nom. illeg. (Röll 1923b)
- =Sphagnum siamense Dixon, J. Siam Soc., Nat. Hist. Suppl. 9(1): 3. 1932. (Dixon 1932; Eddy 1977a)
Sphagnum papillosum Lindb., Contr. Fl. Crypt. As.: 280. 1872[1873]. (Lindberg 1872; Michaelis 2019)

≡Sphagnum cymbifolium var. papillosum (Lindb.) Schimp., Syn. Musc. Eur. (ed. 2): 848. 1876. (Schimper 1876) ≡Sphagnum cymbifolium subsp. papillosum (Lindb.) Warnst., Flora 65: 552. 1882. ≡Sphagnum palustre subsp. papillosum (Lindb.) Russow, Schriften Naturf.-Ges. Univ. Dorpat. 3: 28. 1887. (Russow 1887)
- =Sphagnum obtusifolium var. turgidum Mart., Fl. Crypt. Erlang.: 117. 1817. ≡Sphagnum cymbifolium var. turgidum (Mart.) Steud., Nomencl. Bot. 2: 397. 1824. (Steudel 1824) ≡Sphagnum palustre var. turgidum (Mart.) Röll, Hedwigia 60: 19. 1918. (Wijk et al. 1967)
- =Sphagnum papillosum var. confertum Braithw., Monthly Microscop. J. 9: 215. 1873. (Warnstorf 1911) ≡Sphagnum cymbifolium var. confertum (Braithw.) Warnst., Flora 65: 552. 1882. ≡Sphagnum papillosum f. confertum (Braithw.) Warnst., Pflanzenr. 51: 451. 1911.
- =Sphagnum papillosum var. flaccidum Schlieph., Irmischia 2: 82. 1882. ≡Sphagnum cymbifolium var. flaccidum (Schlieph.) Cardot, Bull. Soc. Roy. Bot. Belgique 25(1): 47, 109. 1886, nom. illeg. (Wijk et al. 1967) ≡Sphagnum palustre var. flaccidum (Schlieph.) Röll, Hedwigia 60: 19. 1918.
- =Sphagnum cymbifolium f. patens Schlieph. ex Röll, Abh. Thüring. Bot. Vereins "Irmischia" 3: 30. 1884, nom. illeg. ≡Sphagnum papillosum var. patens Röll, Flora 67: 598. 1884. ≡Sphagnum cymbifolium var. patens (Röll) C.E.O. Jensen, Festskr. Bot. Foren. Kjøbenhavn: 70. 1890, nom. illeg. (Wijk et al. 1967)
- =Sphagnum papillosum var. riparium Grav., Bull. Soc. Roy. Bot. Belgique 23(2): 155. 1884. (Warnstorf 1911) ≡Sphagnum papillosum subf. riparium (Grav.) Warnst., Pflanzenr. 51: 452. 1911.
- =Sphagnum papillosum var. submersum Grav., Bull. Soc. Roy. Bot. Belgique 23(2): 82. 1884. (Warnstorf 1911) ≡Sphagnum cymbifolium var. submersum (Grav.) Cardot, Bull. Soc. Roy. Bot. Belgique 25(1): 49, 109. 1886. ≡Sphagnum papillosum subf. submersum (Grav.) Warnst., Pflanzenr. 51: 452. 1911.
- =Sphagnum papillosum var. abbreviatum Grav. ex Warnst., Hedwigia 23: 99. 1884. (Warnstorf 1884b; Warnstorf 1911) ≡Sphagnum cymbifolium var. abbreviatum (Grav. ex Warnst.) Cardot, Bull. Soc. Roy. Bot. Belgique 25(1): 49. 1886.
- =Sphagnum papillosum var. brachycladum Cardot, Rev. Bryol. 11: 54. 1884. (Cardot 1884) ≡Sphagnum cymbifolium var. brachycladum (Cardot) Cardot, Bull. Soc. Roy. Bot. Belgique 25(1): 49, 109. 1886, nom. illeg. ≡Sphagnum papillosum f. brachycladum (Cardot) Röll, Flora 69: 471. 1886. (Warnstorf 1911)
- =Sphagnum papillosum var. minutulum Schlieph., Laubm. Deutschl. 1: 106. 1885. (Limpricht 1885–1903; Warnstorf 1911)
- =Sphagnum cymbifolium f. densum Röll, Flora 69: 468. 1886. ≡Sphagnum cymbifolium var. densum (Röll) Röll, Hedwigia 42(Beibl.): 28. 1903. ≡Sphagnum palustre var. densum (Röll) Röll, Hedwigia 56: 97. 1915. (Röll 1915) ≡Sphagnum papillosum var. densum (Röll) Röll, Hedwigia 64: 219. 1923. (Röll 1923b)
- =Sphagnum papillosum f. humile Röll, Flora 69: 470. 1886. ≡Sphagnum papillosum var. humile (Röll) Röll, Hedwigia 51: 115. 1911. (Röll 1911b)
- =Sphagnum papillosum var. deflexum Röll, Flora 69: 472. 1886. (Warnstorf 1911)
- =Sphagnum papillosum var. laxum Röll, Flora 69: 472. 1886. (Warnstorf 1911)
- =Sphagnum papillosum var. bernetii Röll, Flora 69: 473. 1886. (Warnstorf 1911) ≡Sphagnum papillosum subf. bernetii (Röll) Warnst., Pflanzenr. 51: 452. 1911.
- =Sphagnum papillosum var. pycnocladum Röll, Flora 69: 473. 1886. (Warnstorf 1911) ≡Sphagnum papillosum subf. pycnocladum (Röll) Warnst., Pflanzenr. 51: 452. 1911.
- =Sphagnum papillosum var. schliephackeanum Röll, Flora 69: 474. 1886. (Warnstorf 1911)
- =Sphagnum cymbifolium f. livens Cardot, Bull. Soc. Roy. Bot. Belgique 26: 43. 1887. ≡Sphagnum papillosum var. livens (Cardot) Cardot, Bull. Soc. Hist. Nat. Autun 10: 352 [Répert. Sphagnol. 120]. 1897. (Cardot 1897)
- =Sphagnum cymbifolium var. laeve Warnst., Verh. Bot. Vereins Prov. Brandenburg 30(4): 297. 1889. ≡Sphagnum papillosum var. laeve (Warnst.) Renauld & Cardot, Rev. Bryol. 19(5–6): 67. 1892. (McQueen & Andrus 2007)
- =Sphagnum cymbifolium var. sublaeve Limpr. ex Warnst., Bot. Gaz. 15(10): 251. 1890. ≡Sphagnum papillosum var. sublaeve (Limpr. ex Warnst.) Renauld & Cardot, Rev. Bryol. 19(5–6): 67. 1892. (McQueen & Andrus 2007)
- =Sphagnum cymbifolium var. fuscescens C.E.O. Jensen, Festskr. Bot. Foren. Kjøbenhavn: 70. 1890, nom. illeg. ≡Sphagnum papillosum var. fuscescens Cardot, Bull. Soc. Hist. Nat. Autun 10: 352 [Répert. Sphagnol. 120]. 1897. (Cardot 1897)
- =Sphagnum cymbifolium var. glaucovirens Schlieph. ex C.E.O. Jensen, Festskr. Bot. Foren. Kjøbenhavn: 70. 1890. (Jensen 1890)
- =Sphagnum cymbifolium var. robustum C.E.O. Jensen, Festskr. Bot. Foren. Kjøbenhavn: 70. 1890. (Warnstorf 1911)
- =Sphagnum ochraceum Warnst., Samml. Eur. Torfm.: 147. 1890. (Wijk et al. 1967)
- =Sphagnum papillosum var. normale Warnst., Hedwigia 30: 160. 1891, nom. illeg. (Warnstorf 1891a; Warnstorf 1911)
- =Sphagnum waghornei Warnst., Hedwigia 33: 329. 1894. (Crum 1984b)
- =Sphagnum borneoense Warnst., Allg. Bot. Z. Syst. 1: 229. 1895. (Eddy 1977a)
- =Sphagnum itacolumitis Müll. Hal. & Warnst., Hedwigia 36: 172. 1897. (Costa 2021)
- =Sphagnum papillosum var. submersum Schiffn., Sitzungsber. Deutsch. Naturwiss.-Med. Vereins Böhmen "Lotos" Prag 48: 351. 1900, nom. illeg. (Schiffner 1900)
- =Sphagnum hakkodense Warnst. & Cardot, Bull. Herb. Boissier 2: 710. 1907. (Crum 1984b)
- =Sphagnum papillosum var. cuspidatum Röll, Hedwigia 46: 245. 1907. (Röll 1907b)
- =Sphagnum papillosum var. imbricatum Röll, Hedwigia 46: 245. 1907. (Röll 1907b)
- =Sphagnum papillosum var. laxum G. Roth, Hedwigia 47: 323. 1908, nom. illeg. (Roth 1908)
- =Sphagnum papillosum var. molluscoides G. Roth, Hedwigia 47: 323. 1908. (Roth 1908)
- =Sphagnum hakkodense var. gravetii Warnst., Pflanzenr. 51: 448. 1911. (Warnstorf 1911)
- =Sphagnum papillosum f. majus Grav. ex Warnst., Pflanzenr. 51: 451. 1911. (Warnstorf 1911)
- =Sphagnum papillosum f. crispulum Warnst., Pflanzenr. 51: 453. 1911. (Warnstorf 1911)
- =Sphagnum papillosum var. capitatum Röll, Hedwigia 55: 100. 1915. (Röll 1915)
- =Sphagnum papillosum f. squarrosulum Ingham & Wheldon, Syn. Eur. Sphagna: 39. 1917. (Wheldon 1917)
- =Sphagnum papillosum var. rigidum Röll, Hedwigia 64: 219. 1923. (Röll 1923b)
Sphagnum paranense H.A. Crum, J. Hattori Bot. Lab. 77: 244. 1994. (Crum 1994a; Michaelis 2019)
Sphagnum parcoramosum H.A. Crum, J. Hattori Bot. Lab. 63: 87. 1987. (Crum 1987b; Costa 2021)
†Sphagnum pedatiforme Bolkh., Trudy Geol. Inst. Akad. Nauk SSSR 1959(24): 82. 1960. (Bolkhovitina 1960)
Sphagnum perfoliatum L.I. Savicz, Bot. Mater. Otd. Sporov. Rast. Bot. Inst. Komarova Akad. Nauk S.S.S.R. 7: 208. 1951. (Shaw et al. 2013)
Sphagnum perichaetiale Hampe, Linnaea 20: 66. 1847. (Hampe 1847; Michaelis 2019)
- =Sphagnum cymbifolium var. bourbonense P. Beauv., Prodr. Aethéogam.: 88. 1805, nom. dub. (Eddy 1985) ≡Sphagnum patens Brid., Muscol. Recent. Suppl. 1: 13. 1806, nom. dub. (Bridel 1806–1817; Eddy 1985) ≡Sphagnum cymbifolium var. patens (Brid.) Brid., Bryol. Univ. 1: 4. 1826, nom. illeg. (Bridel 1826) ≡Sphagnum palustre var. patens (Brid.) Bott., Atti Soc. Tosc. Sci. Nat. Pisa Processi Verbali 24: 30. 1915, nom. illeg. (Bottini 1915; Eddy 1985)
- =Sphagnum erythrocalyx Hampe, Syn. Musc. Frond. 1: 92. 1848. (Müller 1848; Churchill & Linares Castillo 1995)
- =Sphagnum peruvianum Mitt., J. Linn. Soc., Bot. 12: 625. 1869. (Mitten 1869; Crum 1984b)
- =Sphagnum beccarii Hampe, Nuovo Giorn. Bot. Ital. 4: 278. 1872. (Crum 1984b)
- =Sphagnum husnotii Schimp., Ann. Sci. Nat., Bot., sér. 6, 3: 264. 1876. (Bescherelle 1876; Crum 1990a) ≡Sphagnum guadalupense var. husnotii (Schimp.) Warnst., Pflanzenr. 51: 507 (Sphagnol. Univ. 507). 1911, nom. illeg. (Warnstorf 1911)
- =Sphagnum guadalupense Schimp., Ann. Sci. Nat., Bot., sér. 6, 3: 269. 1876. (Bescherelle 1876; Crum 1990a)
- =Sphagnum guyonii Warnst., Deutsche Bot. Monatsschr. 2: 17. 1884. (Crum 1984b)
- =Sphagnum cymbifolium var. ludovicianum Renauld & Cardot, Bull. Soc. Roy. Bot. Belgique 26(1): 42. 1887. ≡Sphagnum ludovicianum (Renauld & Cardot) Warnst., Hedwigia 30: 161. 1891. (Warnstorf 1891a; Crum 1984b)
- =Sphagnum puiggarii Müll. Hal., Flora 70: 409. 1887. (Müller 1887; Crum 1984b)
- =Sphagnum wrightii Müll. Hal., Flora 70: 411. 1887. (Müller 1887; Crum 1984b) ≡Sphagnum guadalupense var. wrightii (Müll. Hal.) Warnst., Pflanzenr. 51: 507. 1911. (Warnstorf 1911)
- =Sphagnum vitjianum Schimp. ex Warnst., Hedwigia 30: 144. 1891. (Warnstorf 1891a; Crum 1984b)
- =Sphagnum antillarum Schimp. ex Warnst., Hedwigia 30: 147. 1891, nom. illeg. (Crum 1984b) ≡Sphagnum cruegeri Cardot, Bull. Soc. Hist. Nat. Autun 10: 270 [Répert. Sphagnol. 38]. 1897. (Cardot 1897; Crum 1984b)
- =Sphagnum griffithianum Warnst., Hedwigia 30: 151. 1891. (Warnstorf 1891a; Crum 1984b)
- =Sphagnum paucifibrosum Warnst., Hedwigia 30: 152. 1891. (Warnstorf 1891a; Crum 1984b)
- =Sphagnum balfourianum Warnst., Hedwigia 30: 153. 1891. (Crum 1984b)
- =Sphagnum erythrocalyx var. laeve Warnst., Hedwigia 30: 157. 1891. (Warnstorf 1891a)
- =Sphagnum erythrocalyx var. papillosum Warnst., Hedwigia 30: 157. 1891. (Warnstorf 1891a)
- =Sphagnum arbogastii Renauld & Cardot, Bull. Soc. Roy. Bot. Belgique 32(2): 8. 1893. (Crum 1984b)
- =Sphagnum carneum Müll. Hal. & Warnst., Hedwigia 36: 145. 1897. (Crum 1984b)
- =Sphagnum brachycladum Müll. Hal. ex Warnst., Hedwigia 36: 170. 1897. (Crum 1984b)
- =Sphagnum subtursum Müll. Hal., Hedwigia 36: 171. 1897. (Eddy 1977a)
- =Sphagnum subtursum var. squarrosulum Warnst., Hedwigia 36: 171. 1897. ≡Sphagnum puiggarii var. squarrosulum (Warnst.) Warnst., Pflanzenr. 51: 497. 1911. (Warnstorf 1911)
- =Sphagnum ouropretense Müll. Hal. & Warnst., Hedwigia 36: 172. 1897. (Crum 1984b)
- =Sphagnum kegelianum Müll. Hal. ex Warnst., Hedwigia 36: 175. 1897. (Crum 1984b)
- =Sphagnum sintenisii Müll. Hal., Hedwigia 37: 219. 1898. (Müller 1898; Crum 1984b)
- =Sphagnum heterophyllum Warnst., Bot. Jahrb. Syst. 27: 254. 1899. (Crum 1984b)
- =Sphagnum subbrachycladum Müll. Hal., Bot. Jahrb. Syst. 27: 255. 1899. (Crum 1984b)
- =Sphagnum grandifolium Warnst., Bot. Centralbl. 82: 8. 1900. (McCarthy 2006)
- =Sphagnum brevicaule Warnst., Hedwigia 39: 108. 1900. (Crum 1984b)
- =Sphagnum pauciporosum Warnst., Hedwigia 39: 109. 1900. (Crum 1984b)
- =Sphagnum geheebii Warnst., Magyar Bot. Lapok 1: 44. 1902. (Crum 1984b)
- =Sphagnum harperi Warnst., Beih. Bot. Centralbl. 16: 250. 1904. (Crum 1984b)
- =Sphagnum paranae Warnst., Allg. Bot. Z. Syst. 11: 97. 1905. (Crum 1984b)
- =Sphagnum macroporum Warnst., Allg. Bot. Z. Syst. 11: 98. 1905. (Crum 1984b)
- =Sphagnum pauloense Warnst., Beih. Bot. Centralbl., Abt. 2, 20: 136. 1906. (Crum 1984b)
- =Sphagnum santosense Warnst., Beih. Bot. Centralbl., Abt. 2, 20: 137. 1906. (Crum 1984b)
- =Sphagnum earlei Warnst., Pflanzenr. 51: 449. 1911. (Warnstorf 1911; Crum 1984b)
- =Sphagnum santosense var. squarrosulum Warnst., Pflanzenr. 51: 458. 1911. (Warnstorf 1911; Costa 2021)
- =Sphagnum marlothii Warnst., Pflanzenr. 51: 471. 1911. (Warnstorf 1911; Crum 1984b)
- =Sphagnum leratianum Paris & Warnst., Pflanzenr. 51: 476. 1911. (Warnstorf 1911; Crum 1984b)
- =Sphagnum ludovicianum var. densum Warnst., Pflanzenr. 51: 478. 1911. (Warnstorf 1911)
- =Sphagnum ludovicianum var. macrophyllum Warnst., Pflanzenr. 51: 478. 1911. (Warnstorf 1911)
- =Sphagnum grandifolium var. brachycladum Warnst., Pflanzenr. 51: 484. 1911. (Warnstorf 1911)
- =Sphagnum pauloense var. schiffneri Warnst., Pflanzenr. 51: 484. 1911. (Warnstorf 1911)
- =Sphagnum grandifolium var. densum Warnst., Pflanzenr. 51: 485. 1911. (Warnstorf 1911)
- =Sphagnum biforme Warnst., Pflanzenr. 51: 493. 1911. (Crum 1984b)
- =Sphagnum puiggarii var. densum Warnst., Pflanzenr. 51: 497. 1911. (Warnstorf 1911; Costa 2021)
- =Sphagnum orgaosense Warnst., Pflanzenr. 51: 500. 1911. (Warnstorf 1911; Crum 1984b)
- =Sphagnum glaucovirens Warnst., Pflanzenr. 51: 501. 1911. (Warnstorf 1911; Crum 1984b)
- =Sphagnum glaucovirens var. densum Warnst., Pflanzenr. 51: 501. 1911. (Warnstorf 1911)
- =Sphagnum orgaosense var. brunnescens Warnst., Pflanzenr. 51: 501. 1911. (Warnstorf 1911; Costa 2021)
- =Sphagnum allionii Warnst., Pflanzenr. 51: 502. 1911. (Crum 1984b)
- =Sphagnum bahiense Warnst., Pflanzenr. 51: 502. 1911. (Crum 1984b)
- =Sphagnum bahiense var. robustius Warnst., Pflanzenr. 51: 503. 1911. (Warnstorf 1911)
- =Sphagnum tijucae Warnst., Pflanzenr. 51: 503. 1911. (Warnstorf 1911; Crum 1984b)
- =Sphagnum tijucae var. glaucofuscescens Warnst., Pflanzenr. 51: 504. 1911. (Warnstorf 1911; Costa 2021)
- =Sphagnum derrumbense Warnst., Pflanzenr. 51: 508. 1911. (Warnstorf 1911; Crum 1984b)
- =Sphagnum discrepans Warnst., Pflanzenr. 51: 510. 1911. (Warnstorf 1911; Crum 1984b)
- =Sphagnum carneum var. fuscscens Warnst., Pflanzenr. 51: 517. 1911. (Warnstorf 1911)
- =Sphagnum japonicum var. philippinense Warnst., Pflanzenr. 51: 520. 1911. (Warnstorf 1911; Michaelis 2019)
- =Sphagnum huntii Warnst., Pflanzenr. 51: 521. 1911. (Warnstorf 1911; Crum 1984b)
- =Sphagnum fleischeri Warnst., Hedwigia 57: 77. 1915. (Crum 1984b)
- =Sphagnum drouhardii Cardot, Hist. Phys. Madagascar, Mousses: 42. 1915. (Renauld & Cardot 1915; Eddy 1985)
- =Sphagnum attenuatum Dixon, J. Bot. 79: 57. 1941. (Crum 1984b)
- =Sphagnum holttumii A. Johnson, Gard. Bull. Singapore 17(2): 320. 1959. (Johnson 1959; Crum 1984b)
- =Sphagnum roseotinctum A. Johnson, Gard. Bull. Singapore 17(2): 320. 1959. (Johnson 1959; Crum 1984b)
Sphagnum perrieri Thér., Recueil Publ. Soc. Havraise Études Diverses 89(2): 112. 1922. (Thériot 1922; Michaelis 2019)
Sphagnum planifolium Müll. Hal., Flora 70: 415. 1887. (Müller 1887; Michaelis 2019)
- =Sphagnum madegassum Müll. Hal., Flora 70: 415. 1887. (Müller 1887; Eddy 1985)
- =Sphagnum pseudocuspidatum Warnst., Hedwigia 29: 218. 1890. (Warnstorf 1890d; Eddy 1985)
- =Sphagnum cardotii Warnst., Bull. Soc. Roy. Bot. Belgique 32(2): 8. 1893. (Eddy 1985)
- =Sphagnum albicans Warnst., Hedwigia 32: 3. 1893. (Eddy 1985)
- =Sphagnum bessonii Warnst., Hedwigia 32: 4. 1893. (Eddy 1985)
Sphagnum planifolium var. angustilimbatum (Warnst.) A. Eddy, Bull. Brit. Mus. (Nat. Hist.), Bot. 12: 148. 1985. (Eddy 1985; Michaelis 2019)

Basionym: Sphagnum angustilimbatum Warnst., Allg. Bot. Z. Syst. 1: 135. 1895. (Eddy 1985)

≡Sphagnum albicans var. angustilimbatum (Warnst.) Warnst., Pflanzenr. 51: 263. 1911. (Warnstorf 1911)
- =Sphagnum stuhlmannii Warnst., Allg. Bot. Z. Syst. 1: 172. 1805. (Eddy 1985)
- =Sphagnum congoanum Warnst., Bull. Soc. Roy. Bot. Belgique 41(1): 8. 1905. (Eddy 1985) ≡Sphagnum planifolium var. congoanum (Warnst.) Warnst., Pflanzenr. 51: 223. 1911. (Warnstorf 1911)
- =Sphagnum potieri H.K.G. Paul, Rev. Bryol., n.s. 4: 72. 1931. (Eddy 1985)
Sphagnum planifolium Müll. Hal. var. planifolium
Sphagnum planifolium var. rugegense (Warnst.) A. Eddy, Bull. Brit. Mus. (Nat. Hist.), Bot. 12: 148. 1985. (Eddy 1985; Michaelis 2019)

Basionym: Sphagnum rugegense Warnst., Wiss. Ergebn. Deut. Zentr.-Afr. Exped., Bot. 2: 135. 1910. (Brotherus 1910; Eddy 1985)
- =Sphagnum ruwenzorense G. Negri, Ann. Bot. (Rome) 7: 161. 1908. (Eddy 1985)
- =Sphagnum recurvatum Warnst., Wiss. Ergebn. Deut. Zentr.-Afr. Exped., Bot. 2: 135. 1910. (Brotherus 1910; Eddy 1985)
- =Sphagnum rugegense var. gracilescens Warnst., Pflanzenr. 51: 251. 1911. (Warnstorf 1911)
- =Sphagnum macromolluscum Dixon, J. Bot. 76: 218. 1938. (Dixon 1938; Eddy 1985)
Sphagnum platyphylloides Warnst., Hedwigia 30(1): 21. 1891. (Costa 2021)
- =Sphagnum platyphylloideum Warnst., Contr. Fl. Bryol. Brésil: 30. 1891. (Brotherus 1891; Paris 1894-1898)
- =Sphagnum umbrosum Warnst., Beih. Bot. Centralbl., Abt. 2, 20: 131. 1906. (Costa & Fares 2012)
- =Sphagnum turgescens var. caldense Warnst., Beih. Bot. Centralbl., Abt. 2, 20: 134. 1906. (Costa 2021)
Sphagnum platyphyllum (Lindb. ex Braithw.) Sull. ex Warnst., Flora 67(25): 480. 1884. (Warnstorf 1884a; Hodgetts et al. 2020)

Basionym: Sphagnum laricinum var. platyphyllum Lindb. ex Braithw., Monthly Microscop. J. 13(6): 230. 1875. (Braithwaite 1875)

≡Sphagnum cavifolium var. platyphyllum (Lindb. ex Braithw.) Warnst., Flora 65: 551. 1882. ≡Sphagnum subsecundum var. platyphyllum (Lindb. ex Braithw.) Cardot, Bull. Soc. Roy. Bot. Belgique 25(1): 113. 1886. ≡Sphagnum cavifolium subsp. platyphyllum (Lindb. ex Braithw.) Russow, Schriften Naturf.-Ges. Univ. Dorpat. 3: 29. 1887. (Russow 1887) ≡Sphagnum contortum subsp. platyphyllum (Lindb. ex Braithw.) C.E.O. Jensen, Festskr. Bot. Foren. Kjøbenhavn: 76. 1890. ≡Sphagnum contortum var. platyphyllum (Lindb. ex Braithw.) Velen., Rozpr. České Akad. Císaře Františka Josefa Vědy, Tř. 2, Vědy Math. Přír. 6(6): 78. 1897. (Velenovský 1897) ≡Sphagnum subsecundum subsp. platyphyllum (Lindb. ex Braithw.) Hérib., Mém. Acad. Sci. Clermont-Ferrand, sér. 2, 14: 454. 1899.
- =Sphagnum auriculatum Ångstr., Öfvers. Kongl. Vetensk.-Akad. Förh. 21: 203. 1864, nom. illeg. (Wijk et al. 1967)
- =Sphagnum laricinum var. teretiusculum Lindb., Not. Sällsk. Fauna Fl. Fenn. Förh. 13: 402. 1874. ≡Sphagnum subsecundum var. teretiusculum (Lindb.) Cardot, Bull. Soc. Roy. Bot. Belgique 25(1): 72, 113. 1886, nom. illeg. ≡Sphagnum platyphyllum var. teretiusculum (Lindb.) Cardot, Bull. Soc. Hist. Nat. Autun 10: 357 [Répert. Sphagnol. 125]. 1897. (Cardot 1897; Warnstorf 1911)
- =Sphagnum laricinum var. subsimplex Lindb., Musci Scand.: 11. 1879. (Lindberg 1879) ≡Sphagnum platyphyllum var. subsimplex (Lindb.) Warnst., Flora 67: 602. 1884. (Warnstorf 1911) ≡Sphagnum subsecundum var. subsimplex (Lindb.) Lindb., Bull. Soc. Roy. Bot. Belgique 26(1): 51. 1887.
- =Sphagnum platyphyllum var. turgescens Warnst., Hedwigia 23: 102. 1884. (Warnstorf 1884b; Warnstorf 1911) ≡Sphagnum neglectum var. turgescens (Warnst.) Paris, Index Bryol.: 1203. 1896.
- =Sphagnum laricinum var. submersum Cardot, Rev. Bryol. 11: 54. 1884. (Cardot 1884) ≡Sphagnum subsecundum var. submersum (Cardot) Cardot, Bull. Soc. Roy. Bot. Belgique 25(1): 72, 113. 1886. ≡Sphagnum platyphyllum var. submersum (Cardot) Röll, Flora 69: 370. 1886. ≡Sphagnum platyphyllum f. submersum (Cardot) Warnst., Pflanzenr. 51: 379. 1911. (Warnstorf 1911)
- =Sphagnum platyphyllum var. robustum Warnst., Flora 69: 370. 1886. ≡Sphagnum subsecundum var. robustum (Warnst.) Cardot, Bull. Soc. Roy. Bot. Belgique 25(1): 72. 1886. ≡Sphagnum laricinum var. robustum (Warnst.) Durand, Bull. Soc. Roy. Bot. Belgique 1–25: 322. 1890. ≡Sphagnum contortum var. robustum (Warnst.) C.E.O. Jensen, Festskr. Bot. Foren. Kjøbenhavn: 77. 1890, nom. illeg. (Wijk et al. 1967)
- =Sphagnum platyphyllum var. compactum Röll, Flora 69: 369. 1886. (Warnstorf 1911) ≡Sphagnum platyphyllum f. compactum (Röll) Warnst., Pflanzenr. 51: 379. 1911.
- =Sphagnum platyphyllum var. contortum Röll, Flora 69: 369. 1886. (Warnstorf 1911) ≡Sphagnum platyphyllum f. contortum (Röll) Warnst., Pflanzenr. 51: 379. 1911.
- =Sphagnum platyphyllum var. gracile Röll, Flora 69: 369. 1886. (Warnstorf 1911)
- =Sphagnum platyphyllum var. molle Röll, Flora 69: 369. 1886. (Warnstorf 1911)
- =Sphagnum platyphyllum f. densum Röll, Flora 69: 370. 1886. ≡Sphagnum platyphyllum var. densum (Röll) Röll, Hedwigia 46: 242. 1907. (Röll 1907b)
- =Sphagnum platyphyllum f. flaccidum Röll, Flora 69: 370. 1886. ≡Sphagnum platyphyllum var. flaccidum (Röll) Röll, Hedwigia 46: 242. 1907. (Röll 1907b)
- =Sphagnum platyphyllum f. fluitans Röll, Flora 69: 370. 1886. ≡Sphagnum platyphyllum var. fluitans (Röll) Röll, Hedwigia 56: 94. 1915. (Röll 1915)
- =Sphagnum contortum var. fennicum C.E.O. Jensen, Festskr. Bot. Foren. Kjøbenhavn: 77. 1890. ≡Sphagnum platyphyllum var. fennicum (C.E.O. Jensen) Cardot, Bull. Soc. Hist. Nat. Autun 10: 357 [Répert. Sphagnol. 125]. 1897. (Cardot 1897)
- =Sphagnum platyphyllum var. obesum Röll, Hedwigia 36: 330. 1897, nom. illeg. (Röll 1897a)
- =Sphagnum platyphyllum var. molluscum Röll, Hedwigia 36: 63. 1897. (Röll 1896)
- =Sphagnum platyphyllum var. stollei G. Roth, Hedwigia 47: 327. 1908. (Roth 1908)
- =Sphagnum platyphyllum var. gracile G. Roth, Hedwigia 47: 328. 1908, nom. illeg. (Roth 1908)
- =Sphagnum platyphyllum var. laxifolium G. Roth, Hedwigia 47: 328. 1908. (Roth 1908)
- =Sphagnum platyphyllum var. squamosum G. Roth, Hedwigia 47: 328. 1908. (Roth 1908)
- =Sphagnum platyphyllum var. simplicissimum Cardot, Pflanzenr. 51: 352. 1911. (Warnstorf 1911)
- =Sphagnum platyphyllum var. laxifolium Warnst., Pflanzenr. 51: 380. 1911, nom. illeg. (Warnstorf 1911; Wijk et al. 1967)
- =Sphagnum pseudoplatyphyllum Röll, Hedwigia 51: 114. 1911, nom. dub. (Michaelis 2019)
- =Sphagnum platyphyllum f. subsimplex Latzel, Beih. Bot. Centralbl., Abt. 2, 61: 224. 1941, nom. illeg. (Latzel 1941)
- =Sphagnum grasslii H.A. Crum, Fragm. Florist. Geobot. 40: 169. 1995. (Crum 1995b; McQueen & Andrus 2007)
Sphagnum pluriporosum H.A. Crum, J. Hattori Bot. Lab. 77: 246. 1994. (Crum 1994a; Costa 2021)
- =Sphagnum septatoporosum H.A. Crum, J. Hattori Bot. Lab. 77: 247. 1994. (Crum 1994a; Costa 2021)
Sphagnum poasense H.A. Crum, Bryologist 92: 102. 1989. (Crum 1989b; Michaelis 2019)
Sphagnum portoricense Hampe, Linnaea 25(3): 359. 1852. (Hampe 1852; Michaelis 2019)
- =Sphagnum sullivantianum Austin, Amer. J. Sci. Arts, ser. 2, 35(104): 253. 1863. (Crum 1984b)
- =Sphagnum herminieri Schimp. ex Besch., Ann. Sci. Nat., Bot., sér. 6, 3: 265. 1876. (Bescherelle 1876; Crum 1984b)
- =Sphagnum portoricense f. hydrophilum Warnst., Samml. Eur. Torfm.: no. 301. 1894. (Warnstorf 1911)
- =Sphagnum portoricense var. flavescens Warnst., Pflanzenr. 51: 445. 1911. (Warnstorf 1911)
- =Sphagnum portoricense var. glaucescens Warnst., Pflanzenr. 51: 445. 1911. (Warnstorf 1911)
Sphagnum priceae H.A. Crum, Contr. Univ. Michigan Herb. 23: 114. 2001. (Crum 2001; Michaelis 2019)
Sphagnum pseudoramulinum H.A. Crum, J. Hattori Bot. Lab. 63: 88. 1987. (Crum 1987b; Costa 2021)
Sphagnum pulchrum (Lindb. ex Braithw.) Warnst., Bot. Centralbl. 82: 42. 1900. (Michaelis 2019)

Basionym: Sphagnum intermedium var. pulchrum Lindb. ex Braithw., Sphagnac. Eur.: 81. 1878. (Braithwaite 1878)

≡Sphagnum recurvum var. pulchrum (Lindb. ex Braithw.) Warnst., Flora 67: 607. 1884. ≡Sphagnum recurvum subsp. pulchrum (Lindb. ex Braithw.) Bom. & Broth., Herb. Mus. Fenn. (ed. 2), Musci: 25. 1894. (Bomansson & Brotherus 1894)
- =Sphagnum recurvum f. fuscoflavescens Warnst., Samml. Eur. Torfm. 4: no. 361. 1894. ≡Sphagnum pulchrum var. fuscoflavescens (Warnst.) Warnst., Pflanzenr. 51: 236 (Sphagnol. Univ. 236). 1911. (Warnstorf 1911)
- =Sphagnum pulchrum var. brachycladum Röll, Hedwigia 46: 229. 1907. (Röll 1907b)
- =Sphagnum pulchrum var. capitatum Röll, Hedwigia 46: 229. 1907. (Röll 1907b)
- =Sphagnum pulchrum var. compactum Röll, Hedwigia 46: 229. 1907. (Röll 1907b)
- =Sphagnum pulchrum var. homocladum Röll, Hedwigia 46: 229. 1907. (Röll 1907b)
- =Sphagnum pulchrum var. laxum Röll, Hedwigia 46: 229. 1907. (Röll 1907b)
- =Sphagnum pulchrum var. strictforme Röll, Hedwigia 46: 229. 1907. (Röll 1907b)
- =Sphagnum pulchrum var. nigricans Warnst., Pflanzenr. 51: 236. 1911. (Warnstorf 1911)
- =Sphagnum pulchrum var. pallidum Warnst., Pflanzenr. 51: 236. 1911. (Warnstorf 1911)
- =Sphagnum pulchrum var. sordidofuscum Warnst., Pflanzenr. 51: 236. 1911. (Warnstorf 1911)
- =Sphagnum pulchrum var. virescens Warnst., Pflanzenr. 51: 236. 1911. (Warnstorf 1911)
- =Sphagnum pulchrum var. flagellare Röll, Hedwigia 56: 76. 1915. (Röll 1915)
- =Sphagnum pulchrum var. majus Röll, Hedwigia 56: 76. 1915. (Röll 1915)
- =Sphagnum pulchrum var. densum Röll, Hedwigia 60: 14. 1918. (Röll 1918)
- =Sphagnum pulchrum var. falcatum Röll, Hedwigia 64: 21. 1923. (Röll 1923a)
- =Sphagnum pulchrum var. submersum Röll, Hedwigia 64: 21. 1923. (Röll 1923a)
- =Sphagnum pulchrum f. gracilescens Naveau, Sched. Bryoth. Iber. 2: no. 70. 1929. (Allorge 1929)
Sphagnum pungifolium X.J. Li, Acta Bot. Yunnan. 15: 257. 1993. (Li 1993; Michaelis 2019)
Sphagnum pycnocladulum Müll. Hal., Flora 70: 420. 1887. (Michaelis 2019)
- =Sphagnum beyrichianum Warnst., Hedwigia 36: 157. 1897. (Eddy 1985)
- =Sphagnum goetzeanum Warnst., Hedwigia 47: 98. 1907. (Eddy 1985)
- =Sphagnum pycnocladulum var. fuscescens Warnst., Pflanzenr. 51: 176. 1911. (Warnstorf 1911; Eddy 1985)
- =Sphagnum pycnocladulum var. viride Warnst., Pflanzenr. 51: 176. 1911. (Warnstorf 1911; Eddy 1985)
Sphagnum pylaesii Brid., Bryol. Univ. 1: 749. 1827. (Bridel 1827a; Hodgetts et al. 2020)

≡Sphagnum sedoides var. pylaesii (Brid.) Husn., Fl. Mousses Nord. Ouest (ed. 2): 28. 1882.
- =Sphagnum sedoides Brid., Bryol. Univ. 1: 750. 1827. (Bridel 1827a; McQueen & Andrus 2007) ≡Sphagnum pylaesii var. sedoides (Brid.) Austin, Musci Appalach.: 7 [no. 24]. 1870.
- =Sphagnum sedoides var. prostratum Brid., Bryol. Univ. 1: 751. 1827. (Bridel 1827a) ≡Sphagnum prostratum (Brid.) Bach. Pyl. ex Warnst., Bot. Centralbl. 9: 99. 1882. (McQueen & Andrus 2007) ≡Sphagnum pylaesii var. prostratum (Brid.) Cardot, Bull. Soc. Hist. Nat. Autun 10: 364 [Répert. Sphagnol. 132]. 1897. (Cardot 1897)
- =Sphagnum pylaiei Lindb., Helsingfors Dagblad 1873(41): 2. 1873, nom. illeg. (Isoviita 1980)
- =Sphagnum sedoides var. camusii Husn., Fl. Mousses Nord. Ouest (ed. 2): 28. 1882. (Crum 1984b) ≡Sphagnum pylaesii var. camusii (Husn.) Warnst., Flora 67: 602. 1884. ≡Sphagnum pylaesii f. camusii (Husn.) Cardot, Bull. Soc. Roy. Bot. Belgique 25: 113. 1886.
- =Sphagnum sedoides var. austinii Husn., Sphagnol. Eur.: 9. 1882. ≡Sphagnum pylaesii var. austinii (Husn.) Warnst., Flora 67: 602. 1884. (McQueen & Andrus 2007)
- =Sphagnum pylaesii f. nigrescens Brid. ex E.A. Delamare, Renauld & Cardot, Ann. Soc. Bot. Lyon 15: 125. 1888. (Delamare et al. 1888)
- =Sphagnum pylaesii f. rubrum E.A. Delamare, Renauld & Cardot, Ann. Soc. Bot. Lyon 15: 125. 1888. (Delamare et al. 1888)
- =Sphagnum pylaesii f. viride E.A. Delamare, Renauld & Cardot, Ann. Soc. Bot. Lyon 15: 125. 1888. (Delamare et al. 1888)
- =Sphagnum pylaesii f. nigricans Warnst., Bot. Gaz. 15(10): 243. 1890. (Crum 1984b)
- =Sphagnum pylaesii var. ramosum Warnst., Bot. Gaz. 15: 243. 1890. (McQueen & Andrus 2007)
- =Sphagnum pylaesii f. heterocladum Naveau, Bryoth. Iber. 1: no. 17. 1928. (Allorge & Allorge 1928)
Sphagnum quinquefarium (Lindb. ex Braithw.) Warnst., Hedwigia 25: 222. 1886. (Hodgetts et al. 2020)

Basionym: Sphagnum acutifolium var. quinquefarium Lindb. ex Braithw., Sphagnac. Eur.: 71. 1878. (Braithwaite 1878)

≡Sphagnum nemoreum var. quinquefarium (Lindb. ex Braithw.) Venturi & Bott., Atti Soc. Crittog. Ital. 3: 226. 1884. ≡Sphagnum plumulosum var. quinquefarium (Lindb. ex Braithw.) Röll, Flora 69: 89. 1886. ≡Sphagnum acutifolium subsp. quinquefarium (Lindb. ex Braithw.) Hérib., Mém. Acad. Sci. Clermont-Ferrand, sér. 2, 14: 445. 1899. ≡Sphagnum nemoreum subsp. quinquefarium (Lindb. ex Braithw.) Bott., Atti Reale Accad. Lincei, Mem. Cl. Sci. Fis., ser. 5, 13(1): 20. 1919.
- =Sphagnum acutifolium var. laxum Russow, Arch. Naturk. Liv- Ehst- Kurlands, Ser. 2, Biol. Naturk. 7: 117. 1865. ≡Sphagnum plumulosum var. laxum (Russow) Röll, Flora 69: 93. 1886. ≡Sphagnum quinquefarium var. laxum (Russow) Röll, Hedwigia 46: 211. 1907. (Röll 1907b)
- =Sphagnum acutifolium var. flavicaule Warnst., Eur. Torfm. (Warnstorf): 50. 1881. (Warnstorf 1881; Michaelis 2019) ≡Sphagnum quinquefarium var. flavicaule (Warnst.) Röll, Bot. Centralbl. 42: 328. 1890. ≡Sphagnum quinquefarium var. flavicaule (Warnst.) Plăm., Fl. Briol. Româiei Cl. Musci 1(1): 53. 1998, nom. illeg. (Plămadă 1998)
- =Sphagnum acutifolium var. gerstenbergeri Warnst., Flora 65: 206. 1882. (Michaelis 2019) ≡Sphagnum plumulosum var. gerstenbergeri (Warnst.) Röll, Flora 69: 90. 1886. ≡Sphagnum quinquefarium var. gerstenbergeri (Warnst.) Cardot, Bull. Soc. Hist. Nat. Autun 10: 365 [Répert. Sphagnol. 133]. 1897. (Cardot 1897)
- =Sphagnum acutiforme var. silesiacum Warnst., Flora 67: 605. 1884. ≡Sphagnum plumulosum var. silesiacum (Warnst.) Röll, Flora 69: 91. 1886. ≡Sphagnum quinquefarium var. silesiacum (Warnst.) Cardot, Bull. Soc. Hist. Nat. Autun 10: 365 [Répert. Sphagnol. 133]. 1897. (Cardot 1897)
- =Sphagnum acutifolium f. strictum Warnst., Hedwigia 23: 105. 1884, nom. illeg. ≡Sphagnum plumulosum f. strictum Röll, Flora 69: 90. 1886. (Röll 1886f) ≡Sphagnum plumulosum var. strictum (Röll) Röll, Verh. K.K. Zool.-Bot. Ges. Wien 47: 667. 1898. ≡Sphagnum quinquefarium var. strictum (Röll) Röll, Hedwigia 46: 210. 1907. (Röll 1907b)
- =Sphagnum acutifolium var. pallens Warnst., Hedwigia 23: 116. 1884. (Warnstorf 1884b; Michaelis 2019) ≡Sphagnum warnstorfii var. pallens (Warnst.) Röll, Flora 69: 106. 1886. ≡Sphagnum quinquefarium var. pallens (Warnst.) Warnst., Verh. Bot. Vereins Prov. Brandenburg 30: 112. 1888. ≡Sphagnum nemoreum var. pallens (Warnst.) Broth. & Saelan, Acta Soc. Fauna Fl. Fenn. 6(4): 40. 1890. ≡Sphagnum girgensohnii var. pallens (Warnst.) Cardot, Bull. Soc. Hist. Nat. Autun 10: 305 [Répert. Sphagnol. 73]. 1897. (Cardot 1897)
- =Sphagnum warnstorfii var. pseudopatulum Röll, Flora 69: 106. 1886. ≡Sphagnum quinquefarium var. pseudopatulum (Röll) Cardot, Bull. Soc. Hist. Nat. Autun 10: 365 [Répert. Sphagnol. 133]. 1897. (Cardot 1897) ≡Sphagnum pseudopatulum (Röll) Röll, Hedwigia 56: 60. 1915. (Michaelis 2011) ≡Sphagnum robustum var. pseudopatulum (Röll) H. Schmidt, Mitt. Bad. Landesvereins Naturk. Naturschutz Freiburg 9–10: 109. 1927.
- =Sphagnum plumulosum f. brachycladum Röll, Flora 69: 89. 1886. ≡Sphagnum plumulosum var. brachycladum (Röll) Röll, Verh. K.K. Zool.-Bot. Ges. Wien 47: 667. 1898. ≡Sphagnum quinquefarium var. brachycladum (Röll) Röll, Hedwigia 46: 211. 1907. (Röll 1907b)
- =Sphagnum plumulosum f. gracile Röll, Flora 69: 89. 1886. (Röll 1886f) ≡Sphagnum plumulosum var. gracile (Röll) Röll, Verh. K.K. Zool.-Bot. Ges. Wien 47: 667. 1898. ≡Sphagnum quinquefarium var. gracile (Röll) Röll, Hedwigia 46: 211. 1907. (Röll 1907b)
- =Sphagnum plumulosum f. molluscum Röll, Flora 69: 89. 1886. ≡Sphagnum plumulosum var. molluscum (Röll) Röll, Verh. K.K. Zool.-Bot. Ges. Wien 47: 667. 1898. ≡Sphagnum quinquefarium var. molluscum (Röll) Röll, Hedwigia 46: 211. 1907. (Röll 1907b)
- =Sphagnum plumulosum f. pusillum Röll, Flora 69: 89. 1886. ≡Sphagnum plumulosum var. pusillum (Röll) Röll, Verh. K.K. Zool.-Bot. Ges. Wien 47: 667. 1898. ≡Sphagnum quinquefarium var. pusillum (Röll) Bott., Atti Reale Accad. Lincei, Mem. Cl. Sci. Fis., ser. 5, 13(1): 31. 1919. (Bottini 1919)
- =Sphagnum plumulosum f. compactum Röll, Flora 69: 90. 1886. ≡Sphagnum plumulosum var. compactum (Röll) Röll, Hedwigia 36: 326. 1897. ≡Sphagnum quinquefarium var. compactum (Röll) Röll, Hedwigia 46: 210. 1907. (Röll 1907b)
- =Sphagnum plumulosum f. flagellare Röll, Flora 69: 90. 1886. ≡Sphagnum quinquefarium var. flagellare (Röll) Röll, Hedwigia 46: 211. 1907. (Röll 1907b)
- =Sphagnum plumulosum f. gracile Röll, Flora 69: 90. 1886. (Röll 1886f)
- =Sphagnum plumulosum f. squarrosulum Röll, Flora 69: 90. 1886. (Röll 1886f) ≡Sphagnum quinquefarium var. squarrosulum (Röll) Röll, Hedwigia 46: 211. 1907. (Röll 1907b)
- =Sphagnum plumulosum f. strictiforme Röll, Flora 69: 90. 1886. ≡Sphagnum plumulosum var. strictiforme (Röll) Röll, Verh. K.K. Zool.-Bot. Ges. Wien 47: 667. 1898. ≡Sphagnum quinquefarium var. strictiforme (Röll) Röll, Hedwigia 46: 211. 1907. (Röll 1907b)
- =Sphagnum plumulosum var. submersum Röll, Flora 69: 90. 1886. (Röll 1886f) ≡Sphagnum quinquefarium var. submersum (Röll) Bott., Atti Reale Accad. Lincei, Mem. Cl. Sci. Fis., ser. 5, 13(1): 34. 1919. (Bottini 1919)
- =Sphagnum acutifolium var. silesiacum Warnst., Hedwigia 25: 223. 1886, nom. illeg. (Michaelis 2019)
- =Sphagnum quinquefarium var. virescens Warnst., Samml. Eur. Torfm. 1: no. 68, 70–72. 1888. (Crum 1984b)
- =Sphagnum quinquefarium var. roseum Warnst., Bot. Gaz. 15: 191. 1890. (Crum 1984b)
- =Sphagnum quinquefarium var. viride Warnst., Bot. Gaz. 15: 191. 1890. (Crum 1984b)
- =Sphagnum quinquefarium var. molle C.E.O. Jensen, Festskr. Bot. Foren. Kjøbenhavn: 88. 1890. (Jensen 1890)
- =Sphagnum quinquefarium var. fuscoflavum Warnst., Samml. Eur. Torfm. 2: no. 161. 1890. (Warnstorf 1911)
- =Sphagnum quinquefarium f. versicolor Russow, Arch. Naturk. Liv- Ehst- Kurlands, Ser. 2, Biol. Naturk. 10: 508. 1894. (Russow 1894; Crum 1984b) ≡Sphagnum quinquefarium var. versicolor (Russow) Warnst., Oesterr. Bot. Z. 45: 141. 1895.
- =Sphagnum quinquefarium var. seriatum Venturi, Musc. Trentino: 11. 1899. (Venturi 1899)
- =Sphagnum quinquefarium var. flavum Warnst., Krypt.-Fl. Brandenburg, Leber- & Torfm.: 434. 1903. (Warnstorf 1902–1903)
- =Sphagnum plumulosum var. microphyllum Röll, Hedwigia 46: 210. 1907. (Gao 1994)
- =Sphagnum quinquefarium var. capitatum Grav. ex Röll, Hedwigia 46: 211. 1907. (Röll 1907b)
- =Sphagnum quinquefarium var. stachyodes Hamm., Mitt. Bayer. Bot. Ges. 2(15): 260. 1910. (Hammerschmid 1910)
- =Sphagnum acutiforme var. tenellum Schlieph., Pflanzenr. 51: 105. 1911, nom. illeg. (Warnstorf 1911; Michaelis 2019)
- =Sphagnum pseudopatulum var. gracile Röll, Hedwigia 56: 60. 1915. (Röll 1915)
- =Sphagnum pseudopatulum var. laxum Röll, Hedwigia 56: 60. 1915. (Röll 1915)
- =Sphagnum pseudopatulum var. pulchrum Röll, Hedwigia 56: 60. 1915. (Röll 1915)
- =Sphagnum quinquefarium f. dasycladum Wheldon, Syn. Eur. Sphagna: 10. 1917. (Wheldon 1917)
- =Sphagnum quinquefarium f. mastigocladum Wheldon, Syn. Eur. Sphagna: 10. 1917. (Wheldon 1917)
- =Sphagnum quinquefarium var. densum Röll ex Bott., Atti Reale Accad. Lincei, Mem. Cl. Sci. Fis., ser. 5, 13(1): 33. 1919. (Bottini 1919)
- =Sphagnum quinquefarium var. patulum Röll ex Bott., Atti Reale Accad. Lincei, Mem. Cl. Sci. Fis., ser. 5, 13(1): 33. 1919. (Bottini 1919)
- =Sphagnum quinquefarium var. pseudoalpinum Latzel, Hedwigia 66: 134. 1926. (Latzel 1926)
- =Sphagnum schofieldii H.A. Crum, N. Amer. Fl., ser. 2, 11: 89. 1984. (Crum 1984b; McQueen & Andrus 2007)
Sphagnum ramulinum Warnst., Bot. Centralbl. 76: 389. 1898. (Costa 2021)
Sphagnum reclinatum H.A. Crum, Contr. Univ. Michigan Herb. 20: 132. 1995. (Crum 1995a; Michaelis 2019)
Sphagnum recurvum P. Beauv., Prodr. Aethéogam.: 88. 1805. (Palisot de Beauvois 1805; Hodgetts et al. 2020)

≡Sphagnum acutifolium var. recurvum (P. Beauv.) Sw., Adnot. Bot.: 74. 1829. (Swartz 1829) ≡Sphagnum cuspidatum var. recurvum (P. Beauv.) Wilson, Fl. Nov.-Zel. 2: 58. 1854. ≡Sphagnum cuspidatum subsp. recurvum (P. Beauv.) Hérib., Mém. Acad. Sci. Clermont-Ferrand, sér. 2, 14: 448. 1899.
- =Sphagnum pentastichum Brid., Muscol. Recent. Suppl. 1: 16. 1806, nom. illeg. (Bridel 1806–1817)
- =Sphagnum pulchricoma Müll. Hal., Syn. Musc. Frond. 1: 102. 1848. (Müller 1848; Crum 1984b) ≡Sphagnum recurvum var. pulchricoma (Müll. Hal.) Warnst., Hedwigia 36: 156. 1897.
- =Sphagnum cuspidatum var. emersum Schimp., Ber. Naturhist. Vereins Augsburg 18: 129. 1865. (Wijk et al. 1967)
- =Sphagnum cuspidatum subsp. intermedium Lindb., Eur. Hvitmoss.: 68. 1882. (Lindberg 1882; Isoviita 1966)
- =Sphagnum variabile f. longifolium Warnst., Flora 65: 207. 1882. ≡Sphagnum recurvum var. longifolium (Warnst.) Warnst., Flora 67: 607. 1884. (Warnstorf 1911) ≡Sphagnum recurvum f. longifolium (Warnst.) Warnst., Pflanzenr. 51: 240. 1911. ≡Sphagnum apiculatum var. longifolium (Warnst.) C.E.O. Jensen, Danmarks Mosser 1: 270. 1915.
- =Sphagnum variabile var. nigrescens Warnst., Flora 65: 550. 1882. (Warnstorf 1911) ≡Sphagnum recurvum var. nigrescens (Warnst.) Warnst., Flora 67: 608. 1884. ≡Sphagnum recurvum f. nigrescens (Warnst.) Warnst., Pflanzenr. 51: 240. 1911.
- =Sphagnum variabile var. majus Warnst., Sphagnoth. Eur. 3: no. 114. 1883, nom. illeg. (Wijk et al. 1967)
- =Sphagnum recurvum var. limprichtii Schlieph. ex Warnst., Hedwigia 23: 121. 1884. (Warnstorf 1884b) ≡Sphagnum cuspidatum var. limprichtii (Schlieph. ex Warnst.) Hérib., Mém. Acad. Sci. Clermont-Ferrand, sér. 2, 14: 448. 1899. ≡Sphagnum recurvum f. limprichtii (Schlieph. ex Warnst.) Warnst., Pflanzenr. 51: 241. 1911. (Warnstorf 1911)
- =Sphagnum recurvum f. peculiare Schlieph. ex Röll, Irmischia 3: 24. 1884. ≡Sphagnum recurvum var. peculiare (Schlieph. ex Röll) Röll, Hedwigia 56: 76. 1915. (Röll 1915)
- =Sphagnum recurvum f. viride Schlieph. ex Cardot, Bull. Soc. Roy. Bot. Belgique 25: 118. 1886. (Cardot 1886)
- =Sphagnum recurvum var. oxycladum Cardot, Bull. Soc. Roy. Bot. Belgique 25: 97, 118. 1886. (Cardot 1897)
- =Sphagnum intermedium var. molluscum Röll, Flora 69: 230. 1886. (Cardot 1897) ≡Sphagnum recurvum var. molluscum (Röll) Cardot, Bull. Soc. Roy. Bot. Belgique 25: 97, 119. 1886, nom. illeg.
- =Sphagnum intermedium Röll, Flora 69: 180. 1886, nom. illeg. (Cardot 1897)
- =Sphagnum recurvum f. flagellare Röll, Flora 69: 184. 1886. (Röll 1886a)
- =Sphagnum recurvum f. maximum Röll, Flora 69: 184. 1886. ≡Sphagnum recurvum var. maximum (Röll) Röll, Hedwigia 46: 232. 1907. (Röll 1907b)
- =Sphagnum recurvum f. rigidulum Röll, Flora 69: 184. 1886. (Röll 1886a)
- =Sphagnum recurvum f. densum Röll, Flora 69: 185. 1886. ≡Sphagnum recurvum var. densum (Röll) Bott., Webbia 4: 390. 1914. (Bottini 1914)
- =Sphagnum recurvum f. pycnocladum Röll, Flora 69: 185. 1886. ≡Sphagnum recurvum var. pycnocladum (Röll) Röll, Hedwigia 46: 232. 1907. (Röll 1907b)
- =Sphagnum recurvum f. compactum Röll, Flora 69: 186. 1886. ≡Sphagnum brevifolium var. compactum (Röll) Röll, Hedwigia 42(Beibl.): 305. 1903. ≡Sphagnum recurvum var. compactum (Röll) Röll, Hedwigia 60: 17. 1918. (Röll 1918)
- =Sphagnum recurvum f. gracile Röll, Flora 69: 186. 1886. (Röll 1886a)
- =Sphagnum recurvum var. teres Röll, Flora 69: 186. 1886. (Wijk et al. 1967) ≡Sphagnum brevifolium var. teres (Röll) Röll, Hedwigia 60: 43. 1918.
- =Sphagnum recurvum f. crassicaule Röll, Flora 69: 227. 1886. ≡Sphagnum brevifolium var. crassicaule (Röll) Röll, Hedwigia 46: 234. 1907. ≡Sphagnum recurvum var. crassicaule (Röll) Röll, Hedwigia 60: 17. 1918. (Röll 1918)
- =Sphagnum recurvum var. falcatum Schlieph., Flora 69: 227. 1886. (Cardot 1897)
- =Sphagnum recurvum f. molluscum Röll, Flora 69: 229. 1886. (Röll 1886b)
- =Sphagnum recurvum f. patulum Röll, Flora 69: 229. 1886. ≡Sphagnum recurvum var. patulum (Röll) Röll, Hedwigia 64: 208. 1923. (Röll 1923b)
- =Sphagnum recurvum var. pseudosquamosum Röll, Flora 69: 229. 1886. (Cardot 1897)
- =Sphagnum recurvum f. submersum Röll, Flora 69: 229. 1886. ≡Sphagnum recurvum var. submersum (Röll) Röll, Hedwigia 46: 233. 1907. (Röll 1907b)
- =Sphagnum intermedium var. macrophyllum Röll, Flora 69: 230. 1886. (Cardot 1897)
- =Sphagnum intermedium f. repens Röll, Flora 69: 230. 1886. (Cardot 1897) ≡Sphagnum intermedium var. compactum Röll, Hedwigia 46: 220. 1907, nom. illeg.
- =Sphagnum intermedium f. tenellum Röll, Flora 69: 230. 1886. (Cardot 1897) ≡Sphagnum intermedium var. tenellum (Röll) Röll, Hedwigia 46: 220. 1907.
- =Sphagnum intermedium var. schimperi Röll, Flora 69: 231. 1886. (Cardot 1897)
- =Sphagnum intermedium var. schliephackeanum Röll, Flora 69: 231. 1886. (Cardot 1897)
- =Sphagnum subpulchricoma Müll. Hal., Flora 70: 415. 1887. (Müller 1887; Yano 1996)
- =Sphagnum recurvum var. undulatum Warnst., Verh. Bot. Vereins Prov. Brandenburg 30: 298. 1889. (Warnstorf 1889)
- =Sphagnum recurvum var. viride C.E.O. Jensen, Festskr. Bot. Foren. Kjøbenhavn: 102. 1890, nom. illeg. (Warnstorf 1911)
- =Sphagnum recurvum var. indianense Röll, Bot. Centralbl. 46: 375. 1891. (Röll 1891b)
- =Sphagnum recurvum var. rigidulum Röll, Bot. Centralbl. 46: 376. 1891, nom. illeg. (Röll 1891b)
- =Sphagnum recurvum var. rigidum Schlieph. & Röll, Verh. Bot. Vereins Prov. Brandenburg 32: 218. 1891. (Warnstorf 1891b)
- =Sphagnum recurvum subf. strictifolium Warnst., Verh. Bot. Vereins Prov. Brandenburg 32: 218. 1891. ≡Sphagnum torreyanum var. strictifolium (Warnst.) Warnst., Krypt.-Fl. Brandenburg, Leber- & Torfm.: 385. 1903. (Warnstorf 1902–1903) ≡Sphagnum recurvum f. strictifolium (Warnst.) Warnst., Pflanzenr. 51: 240. 1911. (Warnstorf 1911)
- =Sphagnum recurvum var. pulchellum Warnst. ex Schiffn., Sitzungsber. Deutsch. Naturwiss.-Med. Vereins Böhmen "Lotos" Prag 44: 283. 1896. (Schiffner 1896)
- =Sphagnum recurvum var. molle Röll, Hedwigia 36: 328. 1897. (Röll 1897a)
- =Sphagnum pulchricoma var. pulcherrimum Warnst., Bot. Centralbl. 82: 44. 1900. (Warnstorf 1911) ≡Sphagnum recurvum var. pulcherrimum (Warnst.) Paris, Index Bryol. (ed. 2) 4: 298. 1905.
- =Sphagnum torreyanum var. leptocladum Warnst., Krypt.-Fl. Brandenburg, Leber- & Torfm.: 384. 1903. (Warnstorf 1902–1903; Warnstorf 1911)
- =Sphagnum intermedium var. gracile Röll, Hedwigia 46: 220. 1907, nom. illeg. (Röll 1907b)
- =Sphagnum intermedium var. contortum Röll, Hedwigia 46: 221. 1907. (Röll 1907b)
- =Sphagnum intermedium var. crispulum Röll, Hedwigia 46: 221. 1907. (Röll 1907b)
- =Sphagnum recurvum var. limprichtii Röll, Hedwigia 46: 231. 1907, nom. illeg. (Röll 1907b)
- =Sphagnum recurvum var. pallens Röll, Hedwigia 46: 231. 1907. (Röll 1907b)
- =Sphagnum recurvum var. tenellum Röll, Hedwigia 46: 231. 1907, nom. illeg. (Röll 1907b)
- =Sphagnum pulchricoma var. caldense-recurvum Müll. Hal. ex Warnst., Pflanzenr. 51: 189. 1911. (Warnstorf 1911)
- =Sphagnum pulchricoma var. coloratum Warnst., Pflanzenr. 51: 189. 1911. (Warnstorf 1911)
- =Sphagnum pulchricoma var. serrae Müll. Hal. ex Warnst., Pflanzenr. 51: 189. 1911. (Warnstorf 1911)
- =Sphagnum pulchricoma var. sphaerocephalum Warnst., Pflanzenr. 51: 189. 1911. (Warnstorf 1911)
- =Sphagnum pulchricoma var. tenellum Warnst., Pflanzenr. 51: 189. 1911. (Warnstorf 1911)
- =Sphagnum recurvum f. latifolium Warnst., Pflanzenr. 51: 240. 1911. (Warnstorf 1911)
- =Sphagnum recurvum var. robustum Breidl. ex Warnst., Pflanzenr. 51: 240 (Sphagnol. Univ. 240). 1911, nom. illeg. (Warnstorf 1911; Wijk et al. 1967)
- =Sphagnum recurvum f. silvaticum Russow ex Warnst., Pflanzenr. 51: 241. 1911, nom. illeg. (Warnstorf 1911)
- =Sphagnum recurvum var. parvulum Warnst., Pflanzenr. 51: 242. 1911. (Warnstorf 1911)
- =Sphagnum recurvum var. homocladum Röll, Hedwigia 51: 105. 1911. (Röll 1911b)
- =Sphagnum intermedium var. teretiusculum Röll, Hedwigia 51: 97. 1911. (Röll 1911b)
- =Sphagnum recurvum var. macrocephalum Röll, Hedwigia 59: 296. 1917. (Röll 1917)
- =Sphagnum recurvum var. limosum Röll, Hedwigia 60: 17. 1918. (Röll 1918)
- =Sphagnum recurvum var. imbricatum Röll, Hedwigia 60: 33. 1918. (Röll 1918)
- =Sphagnum recurvum var. fragile Röll, Hedwigia 60: 46. 1918. (Röll 1918)
Sphagnum reichardtii Hampe ex Warnst., Hedwigia 29: 206. 1890. (Michaelis 2019)
- =Sphagnum hyalinum Hampe, Pflanzenr. 51: 133. 1911. (Warnstorf 1911; Wijk et al. 1967)
Sphagnum richardsianum H.A. Crum, Contr. Univ. Michigan Herb. 11: 281. 1978. (Crum 1978; Michaelis 2019)
Sphagnum rionegrense H.A. Crum, Contr. Univ. Michigan Herb. 21: 155. 1997. (Crum 1997a; Michaelis 2019)
Sphagnum riparium Ångstr., Öfvers. Kongl. Vetensk.-Akad. Förh. 21: 198. 1864. (Ångström 1864; Hodgetts et al. 2020)

≡Sphagnum cuspidatum var. riparium (Ångstr.) Schlieph., Verh. K.K. Zool.-Bot. Ges. Wien 15: 395. 1865. ≡Sphagnum recurvum var. riparium (Ångstr.) C. Hartm., Handb. Skand. Fl. (ed. 10) 2: 126. 1871. (Hartman 1871) ≡Sphagnum intermedium var. riparium (Ångstr.) Braithw., Monthly Microscop. J. 13: 62. 1875. ≡Sphagnum intermedium subsp. riparium (Ångstr.) Lindb., Musci Scand.: 12. 1879. (Lindberg 1879) ≡Sphagnum cuspidatum subsp. riparium (Ångstr.) Lindb., Eur. Hvitmoss.: 69. 1882. (Lindberg 1882)
- =Sphagnum recurvum var. robustum Lindb., Handb. Skand. Fl. (ed. 9) 2: 83. 1864. (Hartman 1864; Michaelis 2019)
- =Sphagnum riparium var. apricum Ångstr., Öfvers. Kongl. Vetensk.-Akad. Förh. 21: 198. 1864, nom. dub. (Warnstorf 1911)
- =Sphagnum riparium var. silvaticum Ångstr., Öfvers. Kongl. Vetensk.-Akad. Förh. 21: 198. 1864, nom. dub. (Warnstorf 1911)
- =Sphagnum cuspidatum var. speciosum Russow, Beitr. Torfm.: 57. 1865. (Russow 1865) ≡Sphagnum speciosum (Russow) H. Klinggr., Schriften Königl. Phys.-Ökon. Ges. Königsberg 13: 5. 1872. (Crum 1984b) ≡Sphagnum intermedium var. speciosum (Russow) Braithw., Monthly Microscop. J. 13: 62. 1875. ≡Sphagnum recurvum var. speciosum (Russow) Warnst., Flora 66: 373. 1883. ≡Sphagnum variabile var. speciosum (Russow) Warnst., Sphagnoth. Eur. 3: no. 108. 1883. ≡Sphagnum riparium var. speciosum (Russow) C.E.O. Jensen, Festskr. Bot. Foren. Kjøbenhavn: 109. 1890.
- =Sphagnum spectabile Schimp., Syn. Musc. Eur. (ed. 2): 834. 1876. (Schimper 1876; Crum 1984b)
- =Sphagnum recurvum var. spectabile Schlieph., Irmischia 2: 66. 1882. (Schliephacke 1882; Michaelis 2019)
- =Sphagnum cuspidatum var. squarrosulum C.E.O. Jensen, Cat. Pl. Soc. Bot. Copenh., Adnot.: 23. 1883. (Jensen 1883) ≡Sphagnum riparium var. squarrosulum (C.E.O. Jensen) Warnst., Flora 67: 608. 1884. ≡Sphagnum riparium f. squarrosulum (C.E.O. Jensen) Warnst., Pflanzenr. 51: 194. 1911. (Warnstorf 1911)
- =Sphagnum riparium var. submersum Warnst., Schriften Naturwiss. Vereins Harzes Wernigerode 2: 72. 1887. (Ochyra et al. 2003)
- =Sphagnum riparium var. arcuatum Russow ex C.E.O. Jensen, Festskr. Bot. Foren. Kjøbenhavn: 109. 1890. (Jensen 1890)
- =Sphagnum riparium f. gracilescens Russow ex C.E.O. Jensen, Festskr. Bot. Foren. Kjøbenhavn: 109. 1890. (Warnstorf 1911)
- =Sphagnum riparium f. molle Russow ex C.E.O. Jensen, Festskr. Bot. Foren. Kjøbenhavn: 109. 1890. (Warnstorf 1911)
- =Sphagnum riparium f. teres Russow ex C.E.O. Jensen, Festskr. Bot. Foren. Kjøbenhavn: 109. 1890. (Warnstorf 1911)
- =Sphagnum riparium f. plumosum Russow ex C.E.O. Jensen, Festskr. Bot. Foren. Kjøbenhavn: 110. 1890. (Warnstorf 1911)
- =Sphagnum riparium var. stenophyllum Russow ex C.E.O. Jensen, Festskr. Bot. Foren. Kjøbenhavn: 110. 1890. (Warnstorf 1911) ≡Sphagnum riparium subsp. stenophyllum (Russow ex C.E.O. Jensen) Russow, Arch. Naturk. Liv- Ehst- Kurlands, Ser. 2, Biol. Naturk. 10: 511. 1894.
- =Sphagnum riparium f. teres Russow ex C.E.O. Jensen, Festskr. Bot. Foren. Kjøbenhavn: 110. 1890. (Warnstorf 1911)
- =Sphagnum riparium var. dusenii Schlieph. ex Warnst., Verh. Bot. Vereins Prov. Brandenburg 32: 195. 1891. (Warnstorf 1911)
- =Sphagnum riparium var. coryphaeum Russow, Verh. Bot. Vereins Prov. Brandenburg 32: 196. 1891. (Ochyra et al. 2003)
- =Sphagnum riparium subsp. platyphyllum Russow, Arch. Naturk. Liv- Ehst- Kurlands, Ser. 2, Biol. Naturk. 10: 511. 1894. (Warnstorf 1911) ≡Sphagnum riparium var. platyphyllum (Russow) Warnst., Bull. Soc. Imp. Naturalistes Moscou, n.s. 14: 268. 1900. (Zickendrath 1901)
- =Sphagnum riparium var. leptocladum Russow, Bull. Soc. Imp. Naturalistes Moscou, n.s. 14: 268. 1900. (Zickendrath 1901)
- =Sphagnum riparium var. iseranum Schiffn., Sitzungsber. Deutsch. Naturwiss.-Med. Vereins Böhmen "Lotos" Prag 48: 351. 1900. (Warnstorf 1911)
- =Sphagnum riparium var. plumosum Schiffn., Sitzungsber. Deutsch. Naturwiss.-Med. Vereins Böhmen "Lotos" Prag 48: 351. 1900, nom. illeg. (Schiffner 1900)
- =Sphagnum riparium var. schiffneri E. Bauer, Deutsche Bot. Monatsschr. 19: 102. 1901. (Bauer 1901)
- =Sphagnum recurvum var. preuschoffii H. Klinggr., Krypt.-Fl. Brandenburg, Leber- & Torfm.: 360. 1903, nom. illeg. (Warnstorf 1902–1903; Michaelis 2019)
- =Sphagnum riparium var. fluitans Russow, Krypt.-Fl. Brandenburg, Leber- & Torfm.: 362. 1903. (Warnstorf 1902–1903)
- =Sphagnum riparium var. compactum Röll, Hedwigia 46: 234. 1907. (Röll 1907b)
- =Sphagnum riparium var. flagellare Röll, Hedwigia 46: 234. 1907. (Röll 1907b)
- =Sphagnum riparium var. humile Röll, Hedwigia 46: 234. 1907. (Röll 1907b)
- =Sphagnum riparium f. brachycladum Warnst., Pflanzenr. 51: 194. 1911. (Warnstorf 1911)
- =Sphagnum riparium f. spectabile Russow ex Warnst., Pflanzenr. 51: 194. 1911. (Warnstorf 1911)
- =Sphagnum riparium var. gracile Röll, Hedwigia 51: 108. 1911. (Röll 1911b)
- =Sphagnum riparium var. patulum Röll, Hedwigia 51: 108. 1911. (Röll 1911b)
- =Sphagnum riparium var. capitatum Röll, Hedwigia 56: 73. 1915. (Röll 1915)
- =Sphagnum riparium var. tenellum Röll, Hedwigia 60: 20. 1918. (Röll 1918)
- =Sphagnum riparium var. dimorphum Röll, Hedwigia 60: 21. 1918. (Röll 1918)
- =Sphagnum riparium var. homocladum Röll, Hedwigia 60: 21. 1918. (Röll 1918)
- =Sphagnum riparium var. irrigatum Röll, Hedwigia 60: 21. 1918. (Röll 1918)
- =Sphagnum riparium var. plumosum Röll, Hedwigia 60: 21. 1918, nom. illeg. (Röll 1918)
- =Sphagnum riparium var. crassicaule Röll, Hedwigia 66: 324. 1926. (Röll 1926)
Sphagnum ripense H.A. Crum & W.R. Buck, Brittonia 44: 457. 1992. (Crum & Buck 1992; Costa 2021)
Sphagnum robinsonii Warnst., Philipp. J. Sci., C. 7: 256. 1912. (Michaelis 2019)
- =Sphagnum personatum B. Hansen, Dansk Bot. Ark. 20, 1: 99. 1961, nom. illeg. (Hansen 1961-1962; Eddy 1977a) ≡Sphagnum thailandense B. Hansen, Dansk Bot. Ark. 20, 2: 204. 1962. (Hansen 1961-1962; Eddy 1977a)
Sphagnum roraimense Warnst., Hedwigia 57: 76. 1915. (Michaelis 2019)
Sphagnum rotundatum Müll. Hal. & Warnst., Hedwigia 36: 162. 1897. (Costa 2021)
- =Sphagnum rotundatum var. ramosum Warnst., Pflanzenr. 51: 399. 1911. (Warnstorf 1911)
- =Sphagnum rotundatum var. subsimplex Warnst., Pflanzenr. 51: 399. 1911. (Warnstorf 1911; Crum 1993b)
Sphagnum rotundifolium Müll. Hal. & Warnst., Hedwigia 36: 159. 1897. (Michaelis 2019)
Sphagnum rubellum Wilson, Bryol. Brit.: 19. 1855. (Wilson 1855; Hodgetts et al. 2020)

≡Sphagnum acutifolium var. rubellum (Wilson) Russow, Arch. Naturk. Liv- Ehst- Kurlands, Ser. 2, Biol. Naturk. 7: 119. 1865. ≡Sphagnum tenellum var. rubellum (Wilson) H. Klinggr., Schriften Königl. Phys.-Ökon. Ges. Königsberg 13: 4. 1872, nom. illeg. ≡Sphagnum acutiforme var. rubellum (Wilson) Warnst., Flora 67: 605. 1884, nom. illeg. ≡Sphagnum wilsonii var. rubellum (Wilson) Röll, Flora 69: 79. 1886, nom. illeg. ≡Sphagnum nemoreum var. rubellum (Wilson) Brizi, Malpighia 4: 282. 1890. ≡Sphagnum quinquefarium var. rubellum (Wilson) Warnst., Oesterr. Bot. Z. 45: 141. 1895. ≡Sphagnum acutifolium subsp. rubellum (Wilson) Hérib., Mém. Acad. Sci. Clermont-Ferrand, sér. 2, 14: 445. 1899. ≡Sphagnum nemoreum subsp. rubellum (Wilson) Bott., Atti Reale Accad. Lincei, Mem. Cl. Sci. Fis., ser. 5, 13(1): 20. 1919. ≡Sphagnum capillifolium var. rubellum (Wilson) A. Eddy, Handb. Eur. Sphagna: 96. 1985. (Daniels & Eddy 1985) ≡Sphagnum capillifolium subsp. rubellum (Wilson) M.O. Hill, Check-list Cens. Cat. Brit. Irish Bryoph.: 26. 1998. (Blockeel & Long 1998)
- =Sphagnum acutifolium var. tenellum Schimp., Mém. Hist. Nat. Sphaignes: 63. 1857. (Michaelis 2019) ≡Sphagnum tenellum (Schimp.) H. Klinggr., Schriften Königl. Phys.-Ökon. Ges. Königsberg 13: 4. 1872, nom. illeg. (Michaelis 2019) ≡Sphagnum nemoreum var. tenellum (Schimp.) Venturi & Bott., Atti Soc. Crittog. Ital. 3: 226. 1884. ≡Sphagnum acutiforme var. tenellum (Schimp.) Schlieph. & Warnst., Flora 67: 605. 1884. ≡Sphagnum schliephackeanum var. tenellum (Schimp.) Röll, Flora 69: 44. 1886. ≡Sphagnum wilsonii var. tenellum (Schimp.) Röll, Flora 69: 79. 1886. ≡Sphagnum rubellum var. tenellum (Schimp.) Breidl., Mitt. Naturwiss. Vereines Steiermark 28: 13. 1891. ≡Sphagnum acutifolium subsp. tenellum (Schimp.) Meyl., Bull. Soc. Vaud. Sci. Nat. 41: 74. 1905. ≡Sphagnum capillaceum var. tenellum (Schimp.) A.L. Andrews, N. Amer. Fl. 15: 28. 1913. (Britton 1913) ≡Sphagnum capillifolium var. tenellum (Schimp.) H.A. Crum, Contr. Univ. Michigan Herb. 11: 90. 1975. (Crum 1975)
- =Sphagnum rubellum var. porosum Mosén, Öfvers. Kongl. Vetensk.-Akad. Förh. 38(3): 28. 1873. (Mosén 1873)
- =Sphagnum acutifolium var. tenue Braithw., Sphagnac. Eur.: 73. 1880, nom. illeg. (Braithwaite 1878; Wijk et al. 1967)
- =Sphagnum acutiforme Schlieph. & Warnst., Flora 67: 495. 1884, nom. illeg.
- =Sphagnum acutifolium var. immersum Schlieph., Hedwigia 23: 117. 1884. (Warnstorf 1884b) ≡Sphagnum plumulosum var. immersum (Schlieph.) Röll, Flora 69: 92. 1886. ≡Sphagnum wilsonii var. immersum (Schlieph.) Röll, Hedwigia 56: 58. 1915. (Röll 1915)
- =Sphagnum acutiforme f. flavum C.E.O. Jensen, Hedwigia 23: 118. 1884. ≡Sphagnum tenellum var. flavum (C.E.O. Jensen) C.E.O. Jensen, Verh. Bot. Vereins Prov. Brandenburg 30: 106. 1888. ≡Sphagnum rubellum var. flavum (C.E.O. Jensen) C.E.O. Jensen, Festskr. Bot. Foren. Kjøbenhavn: 91. 1890. (Warnstorf 1911)
- =Sphagnum schimperi var. gracile Röll, Flora 69: 40. 1886. (Michaelis 2019)
- =Sphagnum schimperi var. tenellum Röll, Flora 69: 40. 1886. (Michaelis 2019)
- =Sphagnum wilsonii Röll, Flora 69: 79. 1886, nom. illeg. (Isoviita 1966)
- =Sphagnum wilsonii f. densum Warnst. ex Röll, Flora 69: 79. 1886. ≡Sphagnum wilsonii var. densum (Warnst. ex Röll) Röll, Hedwigia 59: 293. 1917. (Röll 1917)
- =Sphagnum wilsonii f. gracile Röll, Flora 69: 79. 1886. ≡Sphagnum wilsonii var. gracile (Röll) Röll, Hedwigia 42(Beibl.): 26. 1903. (Röll 1903a)
- =Sphagnum tenellum var. rubrum Grav. ex Warnst., Samml. Eur. Torfm. 1: no. 62. 1888. (Wijk et al. 1967) ≡Sphagnum rubellum var. rubrum (Grav. ex Warnst.) Horrell, J. Bot. 41: 182. 1903.
- =Sphagnum tenellum var. purpurascens Warnst., Samml. Eur. Torfm. 1: no. 64. 1888. (Wijk et al. 1967) ≡Sphagnum rubellum var. purpurascens (Warnst.) Horrell, J. Bot. 38: 219. 1900.
- =Sphagnum tenellum var. versicolor Warnst., Samml. Eur. Torfm. 1: nos. 62, 63, 64, 65. 1888. (Wijk et al. 1967) ≡Sphagnum rubellum var. versicolor (Warnst.) Warnst., Verh. Bot. Vereins Prov. Brandenburg 41: 37. 1899.
- =Sphagnum tenellum var. pallescens Warnst., Bot. Gaz. 15: 137. 1890. ≡Sphagnum rubellum var. pallescens (Warnst.) Warnst., Verh. Bot. Vereins Prov. Brandenburg 41: 37. 1899, nom. illeg. ≡Sphagnum rubellum f. pallescens (Warnst.) Warnst., Pflanzenr. 51: 75. 1911, nom. illeg. (Warnstorf 1911)
- =Sphagnum tenellum var. viride Warnst., Bot. Gaz. 15: 137. 1890. ≡Sphagnum rubellum var. viride (Warnst.) C.E.O. Jensen, Festskr. Bot. Foren. Kjøbenhavn: 91. 1890. (Warnstorf 1911)
- =Sphagnum rubellum var. pallescens C.E.O. Jensen, Festskr. Bot. Foren. Kjøbenhavn: 91. 1890. (Jensen 1890)
- =Sphagnum rubellum var. purpureum C.E.O. Jensen, Festskr. Bot. Foren. Kjøbenhavn: 91. 1890. (Jensen 1890)
- =Sphagnum rubellum var. violaceum Warnst. ex C.E.O. Jensen, Festskr. Bot. Foren. Kjøbenhavn: 91. 1890. (Warnstorf 1911)
- =Sphagnum wilsonii var. quinquefarium Röll, Bot. Centralbl. 46: 252. 1891. (Warnstorf 1911) ≡Sphagnum tenellum var. quinquefarium (Röll) Paris, Index Bryol. Suppl.: 311. 1900.
- =Sphagnum tenellum var. virescens Warnst., Sitzungsber. Naturf.-Ges. Dorpat 10: 428. 1894. (Wijk et al. 1967)
- =Sphagnum tenellum var. pallidoglaucescens Warnst., Schriften Naturf. Ges. Danzig 9(2): 154. 1897. ≡Sphagnum rubellum var. pallidoglaucescens (Warnst.) Horrell, J. Bot. 38: 219. 1900. (Warnstorf 1911) ≡Sphagnum rubellum f. pallidoglaucescens (Warnst.) Warnst., Pflanzenr. 51: 75. 1911.
- =Sphagnum rubellum var. carneum Warnst., Krypt.-Fl. Brandenburg, Leber- & Torfm.: 427. 1903. (Warnstorf 1902–1903)
- =Sphagnum wilsonii var. compactum Röll, Hedwigia 44: 47. 1904. (Röll 1905)
- =Sphagnum wilsonii var. compactum Röll, Hedwigia 46: 209. 1907, nom. illeg. (Röll 1907b)
- =Sphagnum wilsonii var. molluscum Röll, Hedwigia 46: 209. 1907. (Röll 1907b)
- =Sphagnum wilsonii var. strictiforme Röll, Hedwigia 46: 209. 1907. (Röll 1907b)
- =Sphagnum wilsonii var. contortum Röll, Hedwigia 46: 210. 1907. (Röll 1907b)
- =Sphagnum wilsonii var. flagellare Röll, Hedwigia 46: 210. 1907. ≡Sphagnum rubellum var. flagellare (Röll) Bott., Atti Reale Accad. Lincei, Mem. Cl. Sci. Fis., ser. 5, 13(1): 35. 1919. (Bottini 1919)
- =Sphagnum wilsonii var. patulum Röll, Hedwigia 46: 210. 1907. (Wijk et al. 1967) ≡Sphagnum rubellum var. patulum (Röll) Bott., Atti Reale Accad. Lincei, Mem. Cl. Sci. Fis., ser. 5, 13(1): 35. 1919.
- =Sphagnum fuscum var. schimperi Röll ex Warnst., Pflanzenr. 51: 73. 1911, nom. illeg. (Warnstorf 1911; Michaelis 2019)
- =Sphagnum rubellum var. rubescens Warnst., Pflanzenr. 51: 76. 1911. (Warnstorf 1911)
- =Sphagnum rubellum var. sordidum Warnst., Pflanzenr. 51: 76. 1911. (Warnstorf 1911)
- =Sphagnum rubellum var. violascens Warnst., Pflanzenr. 51: 76 (Sphagnol. Univ. 76). 1911, nom. illeg. (Warnstorf 1911; Wijk et al. 1967)
- =Sphagnum molle f. densum Warnst., Sphagnol. Univ.: 132. 1911. (Michaelis 2019)
- =Sphagnum wilsonii var. submersum Röll, Hedwigia 56: 58. 1915. (Röll 1915)
- =Sphagnum wilsonii var. teres Röll, Hedwigia 56: 58. 1915. (Röll 1915)
- =Sphagnum rubellum f. robustum Wheldon, Syn. Eur. Sphagna: 8. 1917. (Wheldon 1917)
- =Sphagnum wilsonii var. microphyllum Röll, Hedwigia 60: 34. 1918. (Röll 1918)
- =Sphagnum wilsonii var. brachycladum Röll, Hedwigia 60: 44. 1918. (Röll 1918)
- =Sphagnum wilsonii var. capitatum Röll, Hedwigia 64: 20. 1923. (Röll 1923a)
- =Sphagnum wilsonii var. falcatum Röll, Hedwigia 64: 20. 1923. (Röll 1923a)
Sphagnum rubiginosum Flatberg, Lindbergia 18: 61. 1993. (Flatberg 1993b; Hodgetts et al. 2020)
Sphagnum rubroflexuosum R.E. Andrus, Bryologist 91: 364. 1988. (Andrus 1988b; Michaelis 2019)
Sphagnum russowii Warnst., Hedwigia 25: 225. 1886. (Hodgetts et al. 2020)

≡Sphagnum acutifolium subsp. russowii (Warnst.) Hérib., Mém. Acad. Sci. Clermont-Ferrand, sér. 2, 14: 444. 1899.
- =Sphagnum acutifolium var. rubicundum Huebener, Muscol. Germ.: 28. 1833. (Huebener 1833; Wijk et al. 1967)
- =Sphagnum acutifolium var. patulum Schimp., Syn. Musc. Eur.: 674. 1860. (Schimper 1860) ≡Sphagnum nemoreum var. patulum (Schimp.) Venturi & Bott., Atti Soc. Crittog. Ital. 3: 226. 1884. ≡Sphagnum schimperi var. patulum (Schimp.) Röll, Flora 69: 41. 1886. ≡Sphagnum subnitens var. patulum (Schimp.) G. Roth, Eur. Torfm. (Roth): 52. 1906. (Roth 1906) ≡Sphagnum patulum (Schimp.) Röll, Hedwigia 46: 212. 1907. (Daniels & Eddy 1990)
- =Sphagnum acutifolium var. robustum Russow, Arch. Naturk. Liv- Ehst- Kurlands, Ser. 2, Biol. Naturk. 7: 117. 1865, nom. illeg. (Michaelis 2019)
- =Sphagnum acutifolium var. roseum Limpr., Bryol. Siles.: 382. 1869. (Michaelis 2019) ≡Sphagnum acutiforme var. roseum (Limpr.) Warnst., Flora 67: 605. 1884. ≡Sphagnum girgensohnii var. roseum (Limpr.) Limpr., Laubm. Deutschl. 1: 109. 1885. (Limpricht 1885–1903) ≡Sphagnum wilsonii var. roseum (Limpr.) Röll, Flora 69: 80. 1886. ≡Sphagnum robustum var. roseum (Limpr.) Cardot, Bull. Soc. Hist. Nat. Autun 10: 384 [Répert. Sphagnol. 152]. 1897. (Cardot 1897) ≡Sphagnum russowii f. roseum (Limpr.) Warnst., Pflanzenr. 51: 66. 1911.
- =Sphagnum acutifolium var. lilacinum Spruce ex Braithw., Monthly Microscop. J. 11: 156. 1873, nom. illeg. (Wijk et al. 1967)
- =Sphagnum acutifolium var. subfimbriatum Braithw., Sphagnac. Eur.: 65. 1878. (Braithwaite 1878; Cardot 1897) ≡Sphagnum acutifolium subvar. subfimbriatum (Braithw.) Bagn., Fl. Warwickshire: 330. 1891[1890].
- =Sphagnum acutifolium var. fallax Warnst., Eur. Torfm. (Warnstorf): 42. 1881. (Warnstorf 1881; Michaelis 2019) ≡Sphagnum acutiforme var. fallax (Warnst.) Warnst., Flora 67: 501, 605. 1884. ≡Sphagnum warnstorfii var. fallax (Warnst.) Röll, Flora 69: 107. 1886. ≡Sphagnum russowii var. fallax (Warnst.) C.E.O. Jensen, Meddel. Grønland 3: 402. 1887. ≡Sphagnum robustum var. fallax (Warnst.) Cardot, Bull. Soc. Hist. Nat. Autun 10: 383 [Répert. Sphagnol. 151]. 1897. (Cardot 1897)
- =Sphagnum acutifolium var. polyphyllum Warnst., Flora 65: 206. 1882. (Michaelis 2019) ≡Sphagnum warnstorfii var. polyphyllum (Warnst.) Röll, Flora 69: 105. 1886. ≡Sphagnum robustum var. polyphyllum (Warnst.) Cardot, Bull. Soc. Hist. Nat. Autun 10: 383 [Répert. Sphagnol. 151]. 1897. (Cardot 1897)
- =Sphagnum acutifolium var. strictiforme Warnst., Flora 66: 373. 1883. (Michaelis 2019) ≡Sphagnum warnstorfii var. strictiforme (Warnst.) Röll, Flora 69: 105. 1886. ≡Sphagnum robustum var. strictiforme (Warnst.) Cardot, Bull. Soc. Hist. Nat. Autun 10: 384 [Répert. Sphagnol. 152]. 1897. (Cardot 1897)
- =Sphagnum acutiforme var. auriculatum Warnst., Flora 67: 605. 1884. (Michaelis 2019) ≡Sphagnum acutifolium var. auriculatum (Warnst.) Röll, Abh. Thüring. Bot. Vereins "Irmischia" 3: 21. 1884. ≡Sphagnum warnstorfii var. auriculatum (Warnst.) Röll, Flora 69: 105. 1886. ≡Sphagnum robustum var. auriculatum (Warnst.) Cardot, Bull. Soc. Hist. Nat. Autun 10: 383 [Répert. Sphagnol. 151]. 1897. (Cardot 1897) ≡Sphagnum pseudopatulum var. auriculatum (Warnst.) Röll, Hedwigia 56: 60. 1915. (Röll 1915)
- =Sphagnum girgensohnii var. fibrosum Warnst., Flora 67: 500. 1884. (Warnstorf 1911) ≡Sphagnum warnstorfii var. fibrosum (Warnst.) Röll, Flora 69: 108. 1886.
- =Sphagnum acutiforme var. robustum Warnst., Flora 67: 501, 605. 1884. ≡Sphagnum robustum (Warnst.) Röll, Flora 69: 109. 1886. (Crum & Anderson 1981) ≡Sphagnum nemoreum subsp. robustum (Warnst.) Bott., Atti Reale Accad. Lincei, Mem. Cl. Sci. Fis., ser. 5, 13(1): 19. 1919.
- =Sphagnum warnstorfii Röll, Flora 69: 105. 1886, nom. illeg. (Isoviita 1966) ≡Sphagnum nemoreum subsp. warnstorfii (Röll) Bott., Atti Reale Accad. Lincei, Mem. Cl. Sci. Fis., ser. 5, 13(1): 19. 1919.
- =Sphagnum warnstorfii var. patulum Schimp. ex Röll, Flora 69: 106. 1886. (Warnstorf 1911)
- =Sphagnum warnstorfii var. fimbriatum Warnst. ex Röll, Flora 69: 108. 1886. (Warnstorf 1911)
- =Sphagnum warnstorfii var. strictum Röll, Flora 69: 108. 1886. ≡Sphagnum robustum var. strictum (Röll) Cardot, Bull. Soc. Hist. Nat. Autun 10: 384 [Répert. Sphagnol. 152]. 1897, nom. illeg. (Cardot 1897; Wijk et al. 1967) ≡Sphagnum russowii var. strictum (Röll) Loeske, Moosfl. Harz.: 109. 1903, nom. illeg. (Loeske 1903)
- =Sphagnum robustum var. densum Röll, Flora 69: 109. 1886. (Cardot 1897)
- =Sphagnum robustum var. elegans Röll, Flora 69: 109. 1886. (Cardot 1897)
- =Sphagnum robustum var. tenellum Röll, Flora 69: 109. 1886. (Röll 1886g)
- =Sphagnum robustum var. curvulum Röll, Flora 69: 110. 1886. (Cardot 1897)
- =Sphagnum robustum var. deflexum Röll, Flora 69: 110. 1886. (Cardot 1897)
- =Sphagnum robustum var. gracilescens Röll, Flora 69: 110. 1886. (Cardot 1897)
- =Sphagnum robustum var. laxum Röll, Flora 69: 110. 1886. (Cardot 1897)
- =Sphagnum robustum var. pulchrum Röll, Flora 69: 110. 1886. ≡Sphagnum russowii var. pulchrum (Röll) Loeske, Moosfl. Harz.: 109. 1903. (Loeske 1903)
- =Sphagnum robustum var. squarrosulum Röll, Flora 69: 110. 1886. ≡Sphagnum russowii var. squarrosulum (Röll) Röll, Verh. K.K. Zool.-Bot. Ges. Wien 47: 668. 1897. (Röll 1897b)
- =Sphagnum robustum var. strictum Röll, Flora 69: 110. 1886. (Röll 1886g)
- =Sphagnum robustum var. flagellatum Röll, Flora 69: 111. 1886. ≡Sphagnum russowii var. flagellatum (Röll) Röll, Verh. K.K. Zool.-Bot. Ges. Wien 47: 668. 1897. (Röll 1897b)
- =Sphagnum robustum var. violaceum Röll, Flora 69: 111. 1886. (Cardot 1897)
- =Sphagnum robustum f. viride Röll, Flora 69: 111. 1886. (Röll 1886g)
- =Sphagnum russowii f. strictum C.E.O. Jensen, Meddel. Grønland 3: 402. 1887. (Lange & Jensen 1887)
- =Sphagnum russowii var. girgensohnioides Russow, Verh. Bot. Vereins Prov. Brandenburg 30(3): 297. 1888. (Ireland, Jr. et al. 1987) ≡Sphagnum robustum var. girgensohnioides (Russow) Cardot, Bull. Soc. Hist. Nat. Autun 10: 383 [Répert. Sphagnol. 151]. 1897. (Cardot 1897)
- =Sphagnum russowii var. rhodochroum Russow, Bot. Gaz. 15: 132. 1890. (Warnstorf 1911) ≡Sphagnum robustum var. rhodochroum (Russow) Cardot, Bull. Soc. Hist. Nat. Autun 10: 383 [Répert. Sphagnol. 151]. 1897. (Cardot 1897)
- =Sphagnum russowii var. obscurum Russow, Bot. Gaz. 15: 133. 1890. (Warnstorf 1890a) ≡Sphagnum robustum var. obscurum (Russow) Cardot, Bull. Soc. Hist. Nat. Autun 10: 383 [Répert. Sphagnol. 151]. 1897. (Cardot 1897)
- =Sphagnum russowii f. intermedium Russow ex Warnst., Samml. Eur. Torfm. 2: no. 135. 1890. ≡Sphagnum russowii var. intermedium (Russow ex Warnst.) C.E.O. Jensen, Festskr. Bot. Foren. Kjøbenhavn: 93. 1890. (Warnstorf 1911) ≡Sphagnum robustum var. intermedium (Russow ex Warnst.) Cardot, Bull. Soc. Hist. Nat. Autun 10: 383 [Répert. Sphagnol. 151]. 1897. (Cardot 1897)
- =Sphagnum russowii f. molle Russow ex Warnst., Samml. Eur. Torfm. 2: no. 124. 1890. ≡Sphagnum russowii var. molle (Russow ex Warnst.) C.E.O. Jensen, Festskr. Bot. Foren. Kjøbenhavn: 93. 1890. ≡Sphagnum robustum var. molle (Russow ex Warnst.) Cardot, Bull. Soc. Hist. Nat. Autun 10: 383 [Répert. Sphagnol. 151]. 1897. (Cardot 1897)
- =Sphagnum russowii var. purpureum C.E.O. Jensen, Festskr. Bot. Foren. Kjøbenhavn: 94. 1890. (Jensen 1890) ≡Sphagnum robustum var. purpureum (C.E.O. Jensen) Cardot, Bull. Soc. Hist. Nat. Autun 10: 383 [Répert. Sphagnol. 151]. 1897. (Cardot 1897)
- =Sphagnum russowii var. viride C.E.O. Jensen, Festskr. Bot. Foren. Kjøbenhavn: 94. 1890. ≡Sphagnum robustum var. viride (C.E.O. Jensen) Cardot, Bull. Soc. Hist. Nat. Autun 10: 384 [Répert. Sphagnol. 152]. 1897, nom. illeg. (Cardot 1897; Jensen 1890)
- =Sphagnum russowii var. laxum Röll, Bot. Centralbl. 46: 374. 1891. (Röll 1891b)
- =Sphagnum russowii var. virescens Russow, Arch. Naturk. Liv- Ehst- Kurlands, Ser. 2, Biol. Naturk. 10(4): 505. 1894, nom. illeg. (Wijk et al. 1967) ≡Sphagnum russowii f. virescens (Russow) Warnst., Pflanzenr. 51: 66. 1911. ≡Sphagnum robustum var. virescens (Russow) A.T. Grimme, Abh. Ber. Vereins Naturk. Kassel 58: 31. 1936, nom. illeg.
- =Sphagnum russowii var. poecilum Russow, Samml. Eur. Torfm.: no. 335. 1894. (Warnstorf 1911) ≡Sphagnum robustum var. poecilum (Russow) Cardot, Bull. Soc. Hist. Nat. Autun 10: 383 [Répert. Sphagnol. 151]. 1897. (Cardot 1897)
- =Sphagnum russowii var. tenellum Röll, Hedwigia 36: 327. 1897. (Röll 1897a)
- =Sphagnum russowii var. pusillum Röll, Verh. K.K. Zool.-Bot. Ges. Wien 47: 668. 1898. ≡Sphagnum robustum var. pusillum (Röll) Bott., Atti Reale Accad. Lincei, Mem. Cl. Sci. Fis., ser. 5, 13(1): 36. 1919. (Bottini 1919)
- =Sphagnum russowii var. flavescens Russow ex Horrell, J. Bot. 38: 167. 1900. (Warnstorf 1911) ≡Sphagnum russowii f. flavescens (Russow ex Horrell) Warnst., Pflanzenr. 51: 66. 1911.
- =Sphagnum anisoporum Warnst. & Cardot, Bull. Herb. Boissier, sér. 2, 7: 710. 1907. (Iwatsuki 1991) ≡Sphagnum robustum f. anisoporum (Warnst. & Cardot) Warnst. ex Z. Iwats., J. Hattori Bot. Lab. 37: 402. 1973.
- =Sphagnum robustum var. tenue Röll, Hedwigia 46: 212. 1907. (Röll 1907b)
- =Sphagnum robustum var. giganteum Röll, Hedwigia 46: 213. 1907. (Röll 1907b)
- =Sphagnum robustum var. intricatum Röll, Hedwigia 46: 213. 1907. (Röll 1907b)
- =Sphagnum robustum var. submersum Röll, Hedwigia 46: 214. 1907. (Röll 1907b)
- =Sphagnum russowii var. strictum G. Roth, Hedwigia 47: 326. 1908, nom. illeg. (Roth 1908)
- =Sphagnum girgensohnii var. robustum Warnst., Pflanzenr. 51: 58 (Sphagnol. Univ. 58). 1911, nom. illeg. (Warnstorf 1911; Ochyra et al. 2003)
- =Sphagnum russowii f. pallescens Warnst., Pflanzenr. 51: 65. 1911. (Warnstorf 1911)
- =Sphagnum russowii var. purpurascens Russow ex Warnst., Pflanzenr. 51: 66. 1911. (Warnstorf 1911) ≡Sphagnum robustum var. purpurascens (Russow ex Warnst.) A.T. Grimme, Abh. Ber. Vereins Naturk. Kassel 58: 31. 1936.
- =Sphagnum russowii var. austerum Warnst., Pflanzenr. 51: 67. 1911. (Warnstorf 1911)
- =Sphagnum robustum var. brachycladum Röll, Hedwigia 56: 61. 1915. (Röll 1915)
- =Sphagnum robustum var. speciosum Röll, Hedwigia 56: 62. 1915. (Röll 1915)
- =Sphagnum robustum var. microcephalum Röll, Hedwigia 59: 293. 1917. (Röll 1917)
- =Sphagnum robustum var. rigidum Röll, Hedwigia 59: 293. 1917. (Röll 1917)
- =Sphagnum robustum var. teres Röll, Hedwigia 60: 20. 1918. (Röll 1918)
- =Sphagnum robustum var. porosum Bott., Atti Reale Accad. Lincei, Mem. Cl. Sci. Fis., ser. 5, 13(1): 37. 1919. (Bottini 1919)
- =Sphagnum gordjaginii Semenov, Trudy Altaisk. Podotd. Russk. Geogr. Obshch. 1: 12. 1921. (Semenov 1921; Michaelis 2019)
- =Sphagnum robustum var. compactum Röll, Hedwigia 64: 207. 1923. (Röll 1923b)
Sphagnum rutenbergii Müll. Hal., Abh. Naturwiss. Vereins Bremen 7: 203. 1881. (Müller & Geheeb 1881; Michaelis 2019)
- =Sphagnum mauritianum Warnst., Hedwigia 30: 17. 1891. (Eddy 1985) ≡Sphagnum oxycladum var. mauritianum (Warnst.) Warnst., Pflanzenr. 51: 308 (Sphagnol. Univ. 308). 1911. (Warnstorf 1911)
- =Sphagnum pallidum Warnst., Hedwigia 30: 171. 1891. (Warnstorf 1891a; Eddy 1985)
- =Sphagnum obovatum Warnst., Hedwigia 30: 18. 1891. (Eddy 1985)
- =Sphagnum aequifolium Warnst., Hedwigia 30: 22. 1891. (Eddy 1985)
- =Sphagnum salvanii Warnst., Hedwigia 47: 119. 1908. (Eddy 1985)
Sphagnum sancto-josephense H.A. Crum & Crosby, Ann. Missouri Bot. Gard. 61: 904. 1974. (Crum & Crosby 1974; Michaelis 2019)
Sphagnum sanguinale Warnst., Bot. Centralbl. 76: 385. 1898. (Costa 2021)
- =Sphagnum huilense H.A. Crum, Bryologist 98: 581. 1995. (Crum 1995d; Michaelis 2019)
Sphagnum santanderense H.A. Crum, J. Hattori Bot. Lab. 74: 148. 1993. (Crum 1993a; Michaelis 2019)
Sphagnum schwabeanum H.K.G. Paul ex Herzog, Beih. Bot. Centralbl., Abt. 2, 64: 17. 1939. (Herzog et al. 1939; Michaelis 2019)
Sphagnum sehnemii H.A. Crum, J. Hattori Bot. Lab. 63: 97. 1987. (Crum 1987b; Costa 2021)
Sphagnum septatum Warnst., Pflanzenr. 51: 257. 1911. (Warnstorf 1911; Michaelis 2019)
Sphagnum simplex Fife, New Zealand J. Bot. 34: 322. 1996. (Fife 1996; Michaelis 2019)
Sphagnum simplicicaulis H.A. Crum, Contr. Univ. Michigan Herb. 17: 76. 1990. (Crum 1990a; Michaelis 2019)
Sphagnum sipmanii H.A. Crum, Trop. Bryol. 6: 23. 1992. (Sipman 1992; Michaelis 2019)
Sphagnum sitchense R.E. Andrus, Sida 22: 969. 2006. (Andrus 2006; McQueen & Andrus 2007)
Sphagnum skyense Flatberg, J. Bryol. 15: 101. 1988. (Flatberg 1988b; Hodgetts et al. 2020)
Sphagnum slooveri A. Eddy, Bull. Brit. Mus. (Nat. Hist.), Bot. 12: 151. 1985. (Eddy 1985; Michaelis 2019)
Sphagnum sonsonense H.A. Crum, Bryologist 98: 584. 1995. (Crum 1995d; Michaelis 2019)
Sphagnum sparsum Hampe, Vidensk. Meddel. Dansk Naturhist. Foren. Kjøbenhavn ser. 3, 2: 267. 1870. (Hampe 1870; Costa 2021)
- =Sphagnum pseudoacutifolium Müll. Hal. & Warnst., Hedwigia 36: 148. 1897. (Yano 1996)
- =Sphagnum roseum Warnst., Beih. Bot. Centralbl. 16: 248. 1904. (Michaelis 2019)
- =Sphagnum apollinairei Paris & Warnst., Hedwigia 47: 114. 1908. (Churchill & Linares Castillo 1995)
- =Sphagnum sparsum var. densum Warnst., Pflanzenr. 51: 87. 1911. (Warnstorf 1911)
- =Sphagnum sparsum var. pallescens Warnst., Pflanzenr. 51: 87. 1911. (Warnstorf 1911)
Sphagnum sphaericum H. Lindb., Bull. Soc. Roy. Bot. Belgique 26(2): 70. 1889, nom. dub. (Michaelis 2019)
†Sphagnum spilotum Verbizk., Trudy Lab. Geol. Uglja 15: 79. 1962. (Verbizkaja 1962)
Sphagnum splendens Maass, Bryologist 70: 193. 1967. (Maass 1967b; Michaelis 2019)
Sphagnum squarrosum Crome, Samml. Deut. Laubm.: 24. 1803. (Crome 1803; Michaelis 2019)

≡Sphagnum latifolium var. squarrosum (Crome) Wahlenb., Fl. Upsal.: 391. 1820. ≡Sphagnum cymbifolium var. squarrosum (Crome) Nees & Hornsch., Bryol. Germ. 1: 11. 1823. (Nees von Esenbeck et al. 1823) ≡Sphagnum teres var. squarrosum (Crome) Warnst., Eur. Torfm. (Warnstorf): 121. 1881, nom. illeg. (Warnstorf 1881) ≡Sphagnum teres subsp. squarrosum (Crome) Warnst., Flora 65: 552. 1882, nom. illeg.
- =Sphagnum crassisetum Brid., Muscol. Recent. Suppl. 1: 15. 1806. (Bridel 1806–1817; Crum 1984b) ≡Sphagnum obtusifolium var. crassisetum (Brid.) Sw., Adnot. Bot.: 71. 1829. (Swartz 1829)
- =Sphagnum squarrosum var. imbricatum Schimp., Syn. Musc. Eur. (ed. 2): 836. 1876. (Schimper 1876; McQueen & Andrus 2007) ≡Sphagnum teres var. imbricatum (Schimp.) Warnst., Flora 65: 552. 1882. ≡Sphagnum squarrosum f. imbricatum (Schimp.) C.E.O. Jensen, Danmarks Mosser 1: 291. 1915. (Jensen 1915)
- =Sphagnum teres f. strictum Warnst., Eur. Torfm. (Warnstorf): 125. 1881. (Warnstorf 1911) ≡Sphagnum squarrosum var. strictum (Warnst.) Röll, Hedwigia 46: 235. 1907, nom. illeg.
- =Sphagnum teres f. immersum Warnst., Flora 65: 552. 1882. ≡Sphagnum squarrosum var. immersum (Warnst.) C.L. Beckm. ex Grav., Rev. Bryol. 10: 39. 1883. (Warnstorf 1911) ≡Sphagnum squarrosum f. immersum (Warnst.) C.L. Beckm. ex Warnst., Flora 67: 606. 1884.
- =Sphagnum squarrosum var. humile Schlieph. ex Röll, Abh. Thüring. Bot. Vereins "Irmischia" 3: 25. 1884. (Röll 1926) ≡Sphagnum squarrosum f. humile (Schlieph. ex Röll) Röll, Hedwigia 66: 325. 1926.
- =Sphagnum squarrosum f. brachycladum Warnst., Hedwigia 23: 120. 1884. ≡Sphagnum imbricatum var. brachycladum (Warnst.) Röll, Hedwigia 59: 300. 1917. ≡Sphagnum squarrosum var. brachycladum (Warnst.) Grav. ex Röll, Hedwigia 64: 222. 1923. (Röll 1923b)
- =Sphagnum squarrosum var. compactum Warnst., Hedwigia 23: 120. 1884. (Warnstorf 1884b; Warnstorf 1911) ≡Sphagnum teres var. compactum (Warnst.) Cardot, Bull. Soc. Roy. Bot. Belgique 25(1): 78. 1886, nom. illeg.
- =Sphagnum squarrosum var. cuspidatum Warnst., Hedwigia 23: 120. 1884. (Warnstorf 1884b; Warnstorf 1911) ≡Sphagnum teres var. cuspidatum (Warnst.) Cardot, Bull. Soc. Roy. Bot. Belgique 25(1): 78. 1886. ≡Sphagnum squarrosum f. cuspidatum (Warnst.) Warnst., Pflanzenr. 51: 160. 1911.
- =Sphagnum squarrosum var. densum Röll, Flora 69: 242. 1886. (Warnstorf 1911) ≡Sphagnum squarrosum f. densum (Röll) Warnst., Pflanzenr. 51: 160. 1911.
- =Sphagnum squarrosum var. elegans Röll, Flora 69: 242. 1886. (Warnstorf 1911) ≡Sphagnum squarrosum f. elegans (Röll) Warnst., Pflanzenr. 51: 160. 1911.
- =Sphagnum squarrosum var. flagellare Röll, Flora 69: 242. 1886. (Warnstorf 1911) ≡Sphagnum squarrosum f. flagellare (Röll) Warnst., Pflanzenr. 51: 160. 1911.
- =Sphagnum squarrosum var. molle Röll, Flora 69: 242. 1886. (Warnstorf 1911) ≡Sphagnum squarrosum f. molle (Röll) Warnst., Pflanzenr. 51: 160. 1911.
- =Sphagnum squarrosum var. patulum Röll, Flora 69: 242. 1886. ≡Sphagnum squarrosum f. patulum (Röll) Warnst., Pflanzenr. 51: 160. 1911. (Warnstorf 1911)
- =Sphagnum squarrosum var. robustum Röll, Flora 69: 242. 1886. (Warnstorf 1911) ≡Sphagnum squarrosum f. robustum (Röll) Warnst., Pflanzenr. 51: 160. 1911.
- =Sphagnum squarrosum var. subsquarrosum Russow, Hedwigia 27: 271. 1888. ≡Sphagnum squarrosum f. subsquarrosum (Russow) C.E.O. Jensen, Danmarks Mosser 1: 291. 1915. (Jensen 1915; Ochyra et al. 2003)
- =Sphagnum squarrosum var. spectabile Russow, Bot. Gaz. 15: 224. 1890. (Warnstorf 1911)
- =Sphagnum squarrosum var. fuscolutescens C.E.O. Jensen, Festskr. Bot. Foren. Kjøbenhavn: 81. 1890. (Warnstorf 1911)
- =Sphagnum squarrosum var. strictiforme Röll, Hedwigia 44: 48. 1904. (Röll 1905)
- =Sphagnum squarrosum var. tenellum Röll, Hedwigia 46: 235. 1907, nom. illeg. (Röll 1907b)
- =Sphagnum squarrosum f. densum Russow ex Warnst., Pflanzenr. 51: 160. 1911, nom. illeg. (Warnstorf 1911)
- =Sphagnum squarrosum f. elegans Russow ex Warnst., Pflanzenr. 51: 160. 1911, nom. illeg. (Warnstorf 1911)
- =Sphagnum squarrosum f. gracile Russow ex Warnst., Pflanzenr. 51: 160. 1911. ≡Sphagnum squarrosum var. gracile (Russow ex Warnst.) Röll, Hedwigia 56: 83. 1915. (Röll 1915)
- =Sphagnum squarrosum f. pycnocladum Wheldon, Syn. Eur. Sphagna: 14. 1917. (Wheldon 1917)
- =Sphagnum squarrosum f. silvaticum Wheldon, Syn. Eur. Sphagna: 14. 1917. (Wheldon 1917)
- =Sphagnum squarrosum var. capitatum Röll, Hedwigia 64: 210. 1923. (Röll 1923b)
- =Sphagnum squarrosum var. submersum Röll, Hedwigia 66: 325. 1926. (Röll 1926)
Sphagnum steerei R.E. Andrus, Bryologist 91: 137. 1988. (Andrus 1988a; Michaelis 2019)

Replaced synonym: Sphagnum imbricatum var. arcticum Flatberg, Kongel. Norske Vidensk. Selsk. Skr. (Trondheim) 1984(3): 46. 1984. (Flatberg 1984)
Sphagnum strictum Sull., Amer. J. Sci. Arts, ser. 2, 1: 72. 1846. (Gray 1846; Hodgetts et al. 2020)
- =Sphagnum humile Schimp. ex Sull., Manual (ed. 2): 611. 1856. (Sullivant 1856; Crum 1984b) ≡Sphagnum rigidum var. humile (Schimp. ex Sull.) Austin, Amer. J. Sci. Arts, ser. 2, 35(104): 254. 1863.
- =Sphagnum mexicanum Mitt., J. Linn. Soc., Bot. 12: 624. 1869. (Mitten 1869; Crum 1984b)
- =Sphagnum garberi Lesq. & James, Proc. Amer. Acad. Arts 14: 133. 1879. (Crum 1984b)
- =Sphagnum garberi f. sphaerocephalum Warnst., Hedwigia 32: 15. 1893. (Warnstorf 1911) ≡Sphagnum garberi var. sphaerocephalum (Warnst.) Paris, Index Bryol.: 1192. 1898.
- =Sphagnum garberi var. squarrosulum Warnst., Hedwigia 32: 15. 1893. ≡Sphagnum mexicanum var. squarrosulum (Warnst.) Warnst., Pflanzenr. 51: 145. 1911. (Warnstorf 1911)
- =Sphagnum garberi var. subsquarrosum Warnst., Hedwigia 32: 15. 1893. ≡Sphagnum mexicanum var. subsquarrosum (Warnst.) Warnst., Pflanzenr. 51: 145. 1911. (Warnstorf 1911; Ireland, Jr. et al. 1987) ≡Sphagnum strictum var. subsquarrosum (Warnst.) A. Schumach., Sitzungsber. Naturhist. Vereins Preuss. Rheinl. 1932–33(D): 2. 1934.
- =Sphagnum domingense Müll. Hal., Hedwigia 37: 219. 1898. (Müller 1898; Crum 1984b)
- =Sphagnum compactum var. expositum Maass, Nova Hedwigia 12: 91. 1966. (Maass 1966; Michaelis 2019)
Sphagnum strictum subsp. pappeanum (Müll. Hal.) A. Eddy, Bull. Brit. Mus. (Nat. Hist.), Bot. 5: 433. 1977. (Eddy 1977a; O'Shea 2006)

Basionym: Sphagnum pappeanum Müll. Hal., Syn. Musc. Frond. 1: 101. 1848. (Müller 1848; Eddy 1977a)
- =Sphagnum lacteolum Besch., Compt. Rend. Hebd. Séances Acad. Sci. 81: 724. 1875. (Bescherelle 1875; Eddy 1985)
- =Sphagnum patens Besch., Fl. Bryol. Réunion: 200. 1881, nom. illeg. (Eddy 1985) ≡Sphagnum bescherellei Warnst., Hedwigia 29: 240. 1890. (Eddy 1985)
- =Sphagnum sparsifolium Warnst., Hedwigia 33: 320. 1894. (Eddy 1985) ≡Sphagnum pappeanum var. sparsifolium (Warnst.) Warnst., Pflanzenr. 51: 152. 1911. (Warnstorf 1911)
- =Sphagnum mildbraedii Warnst., Wiss. Ergebn. Deut. Zentr.-Afr. Exped., Bot. 2: 134. 1910. (Brotherus 1910; Eddy 1985)
- =Sphagnum pappeanum var. subsquarrosum Warnst., Pflanzenr. 51: 152. 1911. (Warnstorf 1911)
- =Sphagnum laxirete Thér., Recueil Publ. Soc. Havraise Études Diverses 92: 4. 1926. (Thériot 1925; O'Shea 1995)
Sphagnum strictum Sull. subsp. strictum
Sphagnum subacutifolium Schimp. ex Warnst., Allg. Bot. Z. Syst. 1: 93. 1895. (Michaelis 2019)
Sphagnum subaequifolium Hampe, Vidensk. Meddel. Dansk Naturhist. Foren. Kjøbenhavn ser. 4, 1–2: 75. 1879. (Hampe 1879; Yano 2011)

≡Sphagnum perforatum var. subaequifolium (Hampe) Warnst., Pflanzenr. 51: 419 (Sphagnol. Univ. 419). 1911, nom. illeg. (Warnstorf 1911)
- =Sphagnum perforatum Warnst., Hedwigia 30: 23. 1891. (Michaelis 2019)
- =Sphagnum perforatum var. aequifolium Warnst., Pflanzenr. 51: 283. 1911. (Warnstorf 1911)
Sphagnum subbalticum Warnst., Hedwigia 47: 116. 1908. (Michaelis 2019)
Sphagnum subfulvum Sjörs, Svensk Bot. Tidskr. 38: 404. 1944[1945]. (Sjörs 1944; Hodgetts et al. 2020)
- =Sphagnum nitidum Warnst., Allg. Bot. Z. Syst. 1: 94. 1895, nom. dub. (Isoviita 1966) ≡Sphagnum subnitens var. nitidum (Warnst.) H.A. Crum, J. Hattori Bot. Lab. 82: 94. 1997. (Crum 1997b)
Sphagnum subfulvum subsp. purpureum Flatberg, Lindbergia 11: 50. 1985. (Flatberg 1985; Hodgetts et al. 2020)
Sphagnum subfulvum Sjörs subsp. subfulvum
Sphagnum subhomophyllum H.A. Crum, Contr. Univ. Michigan Herb. 21: 156. 1997. (Crum 1997a; Michaelis 2019)
Sphagnum submedium Warnst., Beih. Bot. Centralbl., Abt. 2, 20: 134. 1906. (Costa 2021)
- =Sphagnum buckianum H.A. Crum, Bryologist 95: 419. 1992. (Crum 1992b; Costa & Fares 2012)
Sphagnum subnitens Russow & Warnst., Verh. Bot. Vereins Prov. Brandenburg 30: 115. 1888. (Hodgetts et al. 2020)

≡Sphagnum acutifolium subsp. subnitens (Russow & Warnst.) Hérib., Mém. Acad. Sci. Clermont-Ferrand, sér. 2, 14: 446. 1899. ≡Sphagnum acutifolium var. subnitens (Russow & Warnst.) Dixon, Stud. Handb. Brit. Mosses (ed. 2): 16. 1904.
- =Sphagnum acutifolium var. luridum Huebener, Muscol. Germ.: 28. 1833. (Huebener 1833) ≡Sphagnum acutifolium subsp. luridum (Huebener) Lindb., Musci Scand.: 11. 1879. (Lindberg 1879) ≡Sphagnum plumulosum var. luridum (Huebener) Röll, Flora 69: 91. 1886. ≡Sphagnum nemoreum var. luridum (Huebener) Broth. & Saelan, Acta Soc. Fauna Fl. Fenn. 6(4): 40. 1890. ≡Sphagnum luridum (Huebener) Dalla Torre & Sarnth., Fl. Tirol 5: 99. 1904. (Michaelis 2019)
- =Sphagnum acutifolium var. flaccidum De Not., Syllab. Musc.: 298. 1838. (De Notaris 1838) ≡Sphagnum plumulosum var. flaccidum (De Not.) Bott., Atti Reale Accad. Lincei, Mem. Cl. Sci. Fis., ser. 5, 13(1): 28. 1919. (Bottini 1919)
- =Sphagnum acutifolium var. purpureum Schimp., Mém. Hist. Nat. Sphaignes: 63. 1857. (Michaelis 2019) ≡Sphagnum acutiforme var. purpureum (Schimp.) Warnst., Flora 67: 501, 605. 1884. ≡Sphagnum plumulosum var. purpureum (Schimp.) Warnst., Pflanzenr. 51: 120. 1911. (Warnstorf 1911)
- =Sphagnum acutifolium var. plumosum Milde, Bryol. Siles.: 382. 1869. (Michaelis 2019) ≡Sphagnum nemoreum var. plumosum (Milde) Venturi & Bott., Atti Soc. Crittog. Ital. 3: 226. 1884. ≡Sphagnum acutifolium f. plumosum (Milde) Cardot, Bull. Soc. Roy. Bot. Belgique 25: 114. 1886. ≡Sphagnum plumulosum var. plumosum (Milde) Röll, Flora 69: 91. 1886. ≡Sphagnum subnitens var. plumosum (Milde) Cardot, Bull. Soc. Hist. Nat. Autun 10: 398 [Répert. Sphagnol. 166]. 1897. (Cardot 1897)
- =Sphagnum acutifolium var. laetevirens Braithw., Sphagnac. Eur.: 74. 1880. (Braithwaite 1878; Warnstorf 1911) ≡Sphagnum plumulosum var. laetevirens (Braithw.) Röll, Flora 69: 94. 1886. ≡Sphagnum subnitens var. laetevirens (Braithw.) C.E.O. Jensen, Festskr. Bot. Foren. Kjøbenhavn: 86. 1890. ≡Sphagnum plumulosum f. laetevirens (Braithw.) Warnst., Pflanzenr. 51: 119. 1911.
- =Sphagnum acutifolium var. squarrosulum Warnst., Eur. Torfm. (Warnstorf): 48. 1881. (Warnstorf 1881; Michaelis 2019) ≡Sphagnum acutifolium f. squarrosulum (Warnst.) Cardot, Bull. Soc. Roy. Bot. Belgique 25: 114. 1886. ≡Sphagnum plumulosum var. squarrosulum (Warnst.) Röll, Flora 69: 93. 1886. (Röll 1886f) ≡Sphagnum subnitens var. squarrosulum (Warnst.) Cardot, Bull. Soc. Hist. Nat. Autun 10: 398 [Répert. Sphagnol. 166]. 1897. (Cardot 1897)
- =Sphagnum acutifolium var. laxum Warnst., Eur. Torfm. (Warnstorf): 50. 1881, nom. illeg. (Warnstorf 1881; Michaelis 2019) ≡Sphagnum subnitens var. laxum Cardot, Bull. Soc. Hist. Nat. Autun 10: 398 [Répert. Sphagnol. 166]. 1897. (Cardot 1897) ≡Sphagnum plumulosum f. laxum (Cardot) Warnst., Pflanzenr. 51: 119. 1911, nom. illeg.
- =Sphagnum acutifolium var. schillerianum Warnst., Flora 65: 465. 1882. (Michaelis 2019) ≡Sphagnum plumulosum var. schillerianum (Warnst.) Röll, Flora 69: 94. 1886. ≡Sphagnum subnitens var. schillerianum (Warnst.) Cardot, Bull. Soc. Hist. Nat. Autun 10: 398 [Répert. Sphagnol. 166]. 1897. (Cardot 1897)
- =Sphagnum acutifolium var. aquaticum Schlieph., Flora 67: 604. 1884, nom. illeg. (Michaelis 2019) ≡Sphagnum subnitens var. aquaticum (Schlieph.) Cardot, Bull. Soc. Hist. Nat. Autun 10: 398 [Répert. Sphagnol. 166]. 1897. (Cardot 1897)
- =Sphagnum acutifolium f. deflexum Warnst., Hedwigia 23: 104. 1884, nom. illeg. ≡Sphagnum plumulosum f. deflexum Röll, Flora 69: 92. 1886. ≡Sphagnum subnitens var. deflexum (Röll) Cardot, Bull. Soc. Hist. Nat. Autun 10: 398 [Répert. Sphagnol. 166]. 1897. (Cardot 1897) ≡Sphagnum plumulosum var. deflexum (Röll) Röll, Hedwigia 46: 212. 1907.
- =Sphagnum acutifolium f. elongatum Warnst., Hedwigia 23: 104. 1884, nom. illeg. ≡Sphagnum plumulosum var. elongatum Röll, Flora 69: 91. 1886. ≡Sphagnum subnitens var. elongatum (Röll) Cardot, Bull. Soc. Hist. Nat. Autun 10: 398 [Répert. Sphagnol. 166]. 1897. (Cardot 1897)
- =Sphagnum acutifolium f. strictum Warnst., Hedwigia 23: 104. 1884, nom. illeg. ≡Sphagnum plumulosum f. strictum Röll, Flora 69: 92. 1886. (Röll 1886f) ≡Sphagnum fuscum var. strictum Bom. & Broth., Herb. Mus. Fenn. (ed. 2), Musci: 23. 1894, nom. illeg. (Bomansson & Brotherus 1894) ≡Sphagnum subnitens var. strictum Cardot, Bull. Soc. Hist. Nat. Autun 10: 398 [Répert. Sphagnol. 166]. 1897. (Cardot 1897; Warnstorf 1911) ≡Sphagnum acutifolium var. strictum (Cardot) Hérib., Mém. Acad. Sci. Clermont-Ferrand, sér. 2, 14: 446. 1899, nom. illeg.
- =Sphagnum acutifolium f. violaceum Warnst., Hedwigia 23: 104. 1884. ≡Sphagnum plumulosum var. violaceum (Warnst.) Röll, Flora 69: 92. 1886. ≡Sphagnum subnitens var. violaceum (Warnst.) Cardot, Bull. Soc. Hist. Nat. Autun 10: 398 [Répert. Sphagnol. 166]. 1897. (Cardot 1897)
- =Sphagnum acutifolium f. coerulescens Schlieph. ex Röll, Irmischia 4(Separatabdr.): 4. 1884. ≡Sphagnum subnitens var. coerulescens (Schlieph. ex Röll) Warnst., Verh. Bot. Vereins Prov. Brandenburg 30: 118. 1888. (Warnstorf 1911) ≡Sphagnum plumulosum var. coerulescens (Schlieph. ex Röll) Fam., Denkschr. Bayer. Bot. Ges. Regensburg 10: 88. 1908.
- =Sphagnum acutifolium f. fibrosum Cardot, Bull. Soc. Roy. Bot. Belgique 25: 83, 114. 1886. ≡Sphagnum subnitens var. fibrosum (Cardot) Cardot, Bull. Soc. Hist. Nat. Autun 10: 398 [Répert. Sphagnol. 166]. 1897. (Cardot 1897)
- =Sphagnum plumulosum Röll, Flora 69: 89. 1886. (Isoviita 1966) ≡Sphagnum nemoreum subsp. plumulosum (Röll) Bott., Atti Reale Accad. Lincei, Mem. Cl. Sci. Fis., ser. 5, 13(1): 20. 1919. ≡Sphagnum nemoreum var. plumulosum (Röll) Bott., Atti Reale Accad. Lincei, Mem. Cl. Sci. Fis., ser. 5, 13(1): 20. 1919.
- =Sphagnum plumulosum f. majus Röll, Flora 69: 89. 1886. ≡Sphagnum plumulosum var. majus (Röll) Röll, Verh. K.K. Zool.-Bot. Ges. Wien 47: 667. 1898. (Röll 1897b)
- =Sphagnum plumulosum f. tenellum Röll, Flora 69: 89. 1886. (Warnstorf 1911) ≡Sphagnum quinquefarium var. tenellum (Röll) Röll, Hedwigia 46: 210. 1897. ≡Sphagnum plumulosum var. tenellum (Röll) Röll, Verh. K.K. Zool.-Bot. Ges. Wien 47: 667. 1898.
- =Sphagnum plumulosum f. gracile Röll, Flora 69: 91. 1886. (Röll 1886f)
- =Sphagnum plumulosum f. gracile Röll, Flora 69: 93. 1886. (Röll 1886f) ≡Sphagnum plumulosum var. gracile (Röll) Röll, Hedwigia 46: 212. 1907, nom. illeg. (Röll 1907b)
- =Sphagnum plumulosum f. submersum Röll, Flora 69: 93. 1886. (Wijk et al. 1967) ≡Sphagnum plumulosum var. submersum (Röll) Röll, Hedwigia 46: 212. 1907, nom. illeg.
- =Sphagnum plumulosum f. teres Röll, Flora 69: 93. 1886. ≡Sphagnum plumulosum var. teres (Röll) Bott., Webbia 4: 117. 1913. (Bottini 1913)
- =Sphagnum subnitens var. versicolor Warnst., Hedwigia 27: 268. 1888. (Warnstorf 1911) ≡Sphagnum plumulosum var. versicolor (Warnst.) Fam., Denkschr. Bayer. Bot. Ges. Regensburg 10: 89. 1908.
- =Sphagnum acutifolium var. purpurascens Warnst., Hedwigia 27: 274. 1888. ≡Sphagnum plumulosum var. purpurascens (Warnst.) C.E.O. Jensen, Danmarks Mosser 1: 280. 1915. (Jensen 1915)
- =Sphagnum subnitens var. purpurascens Schlieph. ex C.E.O. Jensen, Festskr. Bot. Foren. Kjøbenhavn: 85. 1890. (Warnstorf 1911)
- =Sphagnum subnitens var. griseum Warnst. ex C.E.O. Jensen, Festskr. Bot. Foren. Kjøbenhavn: 86. 1890. (Warnstorf 1911) ≡Sphagnum plumulosum f. griseum (Warnst. ex C.E.O. Jensen) Warnst., Pflanzenr. 51: 119. 1911.
- =Sphagnum subnitens var. pallens Warnst. ex C.E.O. Jensen, Festskr. Bot. Foren. Kjøbenhavn: 86. 1890. ≡Sphagnum plumulosum var. pallens (Warnst. ex C.E.O. Jensen) Warnst., Pflanzenr. 51: 119 (Sphagnol. Univ. 119). 1911. (Warnstorf 1911)
- =Sphagnum subnitens var. carneum Russow ex Warnst., Samml. Eur. Torfm. 3: no. 245. 1892. (Warnstorf 1911) ≡Sphagnum plumulosum var. carneum (Russow ex Warnst.) Fam., Denkschr. Bayer. Bot. Ges. Regensburg 10: 88. 1908.
- =Sphagnum subnitens var. flavorubellum Warnst., J. Bot. 38: 256. 1900. (Horrell 1900a)
- =Sphagnum subnitens var. violascens Warnst. ex Horrell, J. Bot. 38: 256. 1900. (Horrell 1900a)
- =Sphagnum subnitens var. virescens Warnst. ex Horrell, J. Bot. 38: 257. 1900. (Horrell 1900a)
- =Sphagnum subnitens var. eosinum G. Roth, Eur. Torfm. (Roth): 52. 1906. (Roth 1906)
- =Sphagnum subnitens var. luridum Ångstr. ex G. Roth, Eur. Torfm. (Roth): 52. 1906. (Roth 1906)
- =Sphagnum subnitens var. plumosum Russow, Eur. Torfm. (Roth): 52. 1906, nom. illeg. (Roth 1906; Wijk et al. 1967)
- =Sphagnum plumulosum var. patulum Röll, Hedwigia 46: 212. 1907. (Röll 1907b)
- =Sphagnum mandonii Warnst., Hedwigia 47: 101. 1907. (Wijk et al. 1967)
- =Sphagnum plumulosum var. viride Warnst., Pflanzenr. 51: 118. 1911. (Warnstorf 1911)
- =Sphagnum plumulosum var. lilacinum Spruce ex Warnst., Pflanzenr. 51: 120. 1911. (Warnstorf 1911)
- =Sphagnum plumulosum f. teretiusculum Warnst., Pflanzenr. 51: 121. 1911. (Warnstorf 1911)
- =Sphagnum plumulosum f. validum Warnst., Pflanzenr. 51: 121. 1911. (Warnstorf 1911)
- =Sphagnum plumulosum var. flavofuscescens Warnst., Pflanzenr. 51: 121 (Sphagnol. Univ. 121). 1911, nom. illeg. (Warnstorf 1911; Wijk et al. 1967)
- =Sphagnum plumulosum var. ochraceum Warnst., Pflanzenr. 51: 121 (Sphagnol. Univ. 121). 1911, nom. illeg. (Warnstorf 1911; Wijk et al. 1967)
- =Sphagnum plumulosum f. robustum Warnst., Pflanzenr. 51: 519. 1911. (Warnstorf 1911)
- =Sphagnum plumulosum var. densum Röll ex Bott., Webbia 4: 116. 1913. (Röll 1923b)
- =Sphagnum plumulosum var. capitatum Röll ex Bott., Webbia 4: 117. 1913. (Bottini 1913)
- =Sphagnum plumulosum var. gracile Röll ex Bott., Webbia 4: 117. 1913, nom. illeg. (Bottini 1913)
- =Sphagnum plumulosum var. stellare Röll ex Bott., Webbia 4: 117. 1913. (Bottini 1913)
- =Sphagnum plumulosum var. flagellare Röll ex Bott., Webbia 4: 118. 1913, nom. illeg. (Bottini 1913)
- =Sphagnum plumulosum var. robustum Röll ex Bott., Webbia 4: 118. 1913, nom. illeg. (Bottini 1913)
- =Sphagnum plumulosum var. intricatum Schlieph. ex Bott., Atti Soc. Tosc. Sci. Nat. Pisa Processi Verbali 24: 22. 1915, nom. illeg. (Bottini 1915)
- =Sphagnum plumulosum f. delicatum Wheldon, Syn. Eur. Sphagna: 11. 1917. (Wheldon 1917)
- =Sphagnum plumulosum f. pungens Wheldon, Syn. Eur. Sphagna: 11. 1917. (Wheldon 1917)
- =Sphagnum plumulosum f. amentiforme Wheldon, Syn. Eur. Sphagna: 12. 1917. (Wheldon 1917)
- =Sphagnum plumulosum var. vulpinum Bott., Atti Reale Accad. Lincei, Mem. Cl. Sci. Fis., ser. 5, 13(1): 28. 1919. (Bottini 1919)
- =Sphagnum plumulosum var. molle Röll, Hedwigia 64: 213. 1923. (Röll 1923b)
Sphagnum subnitens subsp. ferrugineum Flatberg, Lindbergia 11: 50. 1985. (Flatberg 1985; Hodgetts et al. 2020)

≡Sphagnum subnitens var. ferrugineum (Flatberg) M.O. Hill, Check-list Cens. Cat. Brit. Irish Bryoph.: 26. 1998. (Blockeel & Long 1998)
Sphagnum subnitens Russow & Warnst. subsp. subnitens
Sphagnum subobesum Warnst., Hedwigia 39: 104. 1900. (Michaelis 2019)
- =Sphagnum microporum var. junsaiense Warnst., Pflanzenr. 51: 314. 1911. (Warnstorf 1911; Anderson 1990) ≡Sphagnum subsecundum var. junsaiense (Warnst.) H.A. Crum, N. Amer. Fl., ser. 2, 11: 61. 1984. (Crum 1984b)
- =Sphagnum uzenense Warnst., Pflanzenr. 51: 394. 1911. (Warnstorf 1911; Michaelis 2019)
Sphagnum subovalifolium Müll. Hal. & Warnst., Hedwigia 36: 162. 1897. (Michaelis 2019)
- =Sphagnum pumilum Müll. Hal. & Warnst., Hedwigia 36: 163. 1897. (Costa et al. 2011) ≡Sphagnum subovalifolium var. pumilum (Müll. Hal. & Warnst.) Warnst., Pflanzenr. 51: 353. 1911. (Warnstorf 1911)
- =Sphagnum ellipticum Müll. Hal. & Warnst., Hedwigia 36: 165. 1897. (Yano 1996)
Sphagnum subrufescens Warnst., Pflanzenr. 51: 423. 1911. (Warnstorf 1911; Michaelis 2019)
Sphagnum subsecundoides H.A. Crum & W.R. Buck, Brittonia 44: 453. 1992. (Crum & Buck 1992; Costa 2021)
Sphagnum subsecundum Nees, Deutschl. Fl., Abt. II, Cryptog. 5(17): pl. 3. 1819. (Sturm 1819; Hodgetts et al. 2020)

≡Sphagnum acutifolium var. subsecundum (Nees) Hartm., Handb. Skand. Fl. (ed. 3) 2: 262. 1838. (Hartman 1838) ≡Sphagnum cavifolium var. subsecundum (Nees) Warnst., Eur. Torfm. (Warnstorf): 81. 1881, nom. illeg. (Warnstorf 1881) ≡Sphagnum cavifolium subsp. subsecundum (Nees) Warnst., Flora 65: 550. 1882, nom. illeg. ≡Sphagnum contortum var. subsecundum (Nees) Wilson, Bryol. Brit.: 22. 1885, nom. illeg.
- =Sphagnum variegatum De Not., Mem. Reale Accad. Sci. Torino 39: 257. 1836. (De Notaris 1836; Crum 1984b) ≡Sphagnum subsecundum var. variegatum (De Not.) De Not., Syllab. Musc.: 297. 1838. (De Notaris 1838) ≡Sphagnum contortum var. variegatum (De Not.) Bott., Atti Reale Accad. Lincei, Mem. Cl. Sci. Fis., ser. 5, 13(1): 61. 1919.
- =Sphagnum subsecundum var. gracile Müll. Hal., Syn. Musc. Frond. 1: 101. 1848. (Müller 1848; Roth 1906)
- =Sphagnum compactum var. ambiguum Wilson, Fl. Nov.-Zel. 2: 57. 1854. (Wijk et al. 1967)
- =Sphagnum subsecundum subsp. heterophyllum Russow, Arch. Naturk. Liv- Ehst- Kurlands, Ser. 2, Biol. Naturk. 7: 150. 1865, nom. illeg. (Wijk et al. 1967)
- =Sphagnum subsecundum var. crispulum Russow, Beitr. Torfm.: 73. 1865. (Russow 1865; Warnstorf 1911) ≡Sphagnum subsecundum subf. crispulum (Russow) Warnst., Pflanzenr. 51: 318. 1911.
- =Sphagnum cavifolium Warnst., Eur. Torfm. (Warnstorf): 79. 1881, nom. illeg. (Warnstorf 1881)
- =Sphagnum cavifolium f. intermedium Warnst., Eur. Torfm. (Warnstorf): 85. 1881. ≡Sphagnum subsecundum var. intermedium (Warnst.) Warnst., Flora 67: 600. 1884. (Warnstorf 1911) ≡Sphagnum inundatum var. intermedium (Warnst.) Röll, Hedwigia 46: 238. 1907.
- =Sphagnum cavifolium f. molle Warnst., Eur. Torfm. (Warnstorf): 86. 1881. (Warnstorf 1911) ≡Sphagnum subsecundum var. molle (Warnst.) Warnst., Bot. Centralbl. 9: 100. 1882. ≡Sphagnum cavifolium var. molle (Warnst.) Warnst., Flora 65: 551. 1882.
- =Sphagnum subsecundum var. gracilescens Schimp. ex Husn., Sphagnol. Eur.: 8. 1882. (Warnstorf 1911)
- =Sphagnum subsecundum var. flavidum Bizz., Atti Ist. Veneto Sci. 1: 1392. 1883. (Bottini 1919) ≡Sphagnum subsecundum f. flavidum (Bizz.) Bott., Atti Reale Accad. Lincei, Mem. Cl. Sci. Fis., ser. 5, 13(1): 54. 1919.
- =Sphagnum subsecundum f. repens Röll, Abh. Thüring. Bot. Vereins "Irmischia" 3: 27. 1884. ≡Sphagnum subsecundum var. repens (Röll) Warnst., Flora 67: 600. 1884. (Cardot 1897) ≡Sphagnum contortum var. repens (Röll) Röll, Flora 69: 360. 1886.
- =Sphagnum subsecundum var. tenellum Schlieph. ex Röll, Abh. Thüring. Bot. Vereins "Irmischia" 3: 27. 1884. (Cardot 1897)
- =Sphagnum subsecundum var. teretiusculum Schlieph. ex Röll, Abh. Thüring. Bot. Vereins "Irmischia" 3: 27. 1884. ≡Sphagnum subsecundum f. teretiusculum (Schlieph. ex Röll) C.E.O. Jensen, Festskr. Bot. Foren. Kjøbenhavn: 73. 1890. (Jensen 1890)
- =Sphagnum subsecundum var. tenellum Warnst., Hedwigia 23(7): 99. 1884, nom. illeg. (Warnstorf 1884b; Wijk et al. 1967) ≡Sphagnum subsecundum f. tenellum C.E.O. Jensen, Festskr. Bot. Foren. Kjøbenhavn: 73. 1890, nom. illeg.
- =Sphagnum subsecundum var. virescens Ångstr. ex Warnst., Hedwigia 23: 99. 1884. (Warnstorf 1884b; Warnstorf 1911)
- =Sphagnum subsecundum var. pseudomolle Renauld & Cardot, Rev. Bryol. 12: 45. 1885. (Warnstorf 1911)
- =Sphagnum subsecundum f. immersum Cardot, Bull. Soc. Roy. Bot. Belgique 25: 111. 1886. (Cardot 1886)
- =Sphagnum subsecundum subsp. microphyllum Röll, Flora 69: 353. 1886. (Warnstorf 1911)
- =Sphagnum subsecundum var. angustifolium Röll, Flora 69: 354. 1886. (Cardot 1897)
- =Sphagnum subsecundum var. brachycladum Röll, Flora 69: 354. 1886, nom. illeg. ≡Sphagnum subsecundum f. brachycladum Warnst., Pflanzenr. 51: 318. 1911, nom. illeg. (Warnstorf 1911)
- =Sphagnum subsecundum var. laricinum Röll, Flora 69: 354. 1886, nom. illeg. (Cardot 1897)
- =Sphagnum subsecundum var. laxum Röll, Flora 69: 354. 1886, nom. illeg. (Cardot 1897)
- =Sphagnum subsecundum var. squarrosulum Schlieph. ex Röll, Flora 69: 354. 1886, nom. illeg. (Cardot 1897)
- =Sphagnum subsecundum var. albonigrescens Röll, Flora 69: 355. 1886. (Cardot 1897)
- =Sphagnum subsecundum var. deflexum Röll, Flora 69: 355. 1886, nom. illeg. (Cardot 1897)
- =Sphagnum subsecundum subsp. macrophyllum Röll, Flora 69: 355. 1886. (Warnstorf 1911)
- =Sphagnum subsecundum var. ambiguum Röll, Flora 69: 357. 1886. (Cardot 1897)
- =Sphagnum subsecundum var. roederi Röll, Flora 69: 357. 1886. (Cardot 1897)
- =Sphagnum subsecundum var. polyphyllum Röll, Flora 69: 358. 1886. (Cardot 1897)
- =Sphagnum subsecundum f. livens Cardot, Bull. Soc. Roy. Bot. Belgique 26: 50. 1887. ≡Sphagnum subsecundum var. livens (Cardot) Cardot, Bull. Soc. Hist. Nat. Autun 10: 402 [Répert. Sphagnol. 170]. 1897. (Cardot 1897)
- =Sphagnum subsecundum f. atroviride C.E.O. Jensen, Festskr. Bot. Foren. Kjøbenhavn: 73. 1890. ≡Sphagnum subsecundum var. atroviride (C.E.O. Jensen) Cardot, Bull. Soc. Hist. Nat. Autun 10: 402 [Répert. Sphagnol. 170]. 1897. (Cardot 1897)
- =Sphagnum subsecundum f. fuscescens C.E.O. Jensen, Festskr. Bot. Foren. Kjøbenhavn: 73. 1890. ≡Sphagnum subsecundum var. fuscescens (C.E.O. Jensen) Cardot, Bull. Soc. Hist. Nat. Autun 10: 402 [Répert. Sphagnol. 170]. 1897. (Cardot 1897)
- =Sphagnum subsecundum f. robustum Warnst. ex C.E.O. Jensen, Festskr. Bot. Foren. Kjøbenhavn: 73. 1890, nom. illeg. (Warnstorf 1911) ≡Sphagnum subsecundum var. robustum Cardot, Bull. Soc. Hist. Nat. Autun 10: 402 [Répert. Sphagnol. 170]. 1897, nom. illeg. (Cardot 1897)
- =Sphagnum subsecundum f. patulum C.E.O. Jensen, Festskr. Bot. Foren. Kjøbenhavn: 74. 1890. (Jensen 1890)
- =Sphagnum subsecundum var. indianense Röll, Bot. Centralbl. 46: 406. 1891. (Röll 1891c)
- =Sphagnum subsecundum var. teres Röll, Bot. Centralbl. 46: 406. 1891. (Röll 1891c)
- =Sphagnum subsecundum var. latifolium Röll, Bot. Centralbl. 46: 407. 1891. (Röll 1891c)
- =Sphagnum subsecundum var. robustum Röll, Bot. Centralbl. 46: 407. 1891, nom. illeg. (Röll 1891c)
- =Sphagnum subsecundum var. dieckii Röll, Bot. Centralbl. 46: 408. 1891. (Röll 1891c)
- =Sphagnum ovalifolium Warnst., Hedwigia 30: 23. 1891. (Costa 2021)
- =Sphagnum dasyphyllum Warnst., Hedwigia 31: 176. 1892. (Wijk et al. 1967)
- =Sphagnum mobilense Warnst., Hedwigia 31: 180. 1892. (Wilkes Jr. 1965)
- =Sphagnum simile Warnst., Hedwigia 33: 326. 1894. (Wijk et al. 1967)
- =Sphagnum ovalifolium var. angustatum Warnst., Hedwigia 34: 130. 1895. (Brotherus 1895; Costa 2021)
- =Sphagnum subsecundum var. filiforme Warnst. ex Cardot, Bull. Soc. Hist. Nat. Autun 10: 402 [Répert. Sphagnol. 170]. 1897. (Cardot 1897)
- =Sphagnum rivulare Warnst., Hedwigia 36: 160. 1897. (Wijk et al. 1967) ≡Sphagnum ovalifolium var. rivulare (Warnst.) Warnst., Pflanzenr. 51: 412. 1911. (Warnstorf 1911)
- =Sphagnum langloisii Warnst., Hedwigia 36: 166. 1897. (Wijk et al. 1967)
- =Sphagnum ovalifolium var. robustius Warnst. & Müll. Hal., Hedwigia 36: 168. 1897. (Costa 2021)
- =Sphagnum ovalifolium var. tenuissimum Warnst. & Müll. Hal., Hedwigia 36: 168. 1897. (Costa 2021)
- =Sphagnum subsecundum var. decipiens Warnst., Allg. Bot. Z. Syst. 5, Beih. 1: 40. 1899. (Warnstorf 1911)
- =Sphagnum homocladum Müll. Hal., Bot. Jahrb. Syst. 27: 257. 1899. (Wijk et al. 1967) ≡Sphagnum ovalifolium var. homocladum (Müll. Hal.) Warnst., Bot. Jahrb. Syst. 27: 258. 1899.
- =Sphagnum subsecundum var. namurense C.E.O. Jensen, Bot. Faeröes 1: 139. 1901. (Jensen 1901)
- =Sphagnum subsecundum var. heterophyllum Warnst., Krypt.-Fl. Brandenburg, Leber- & Torfm.: 457. 1903, nom. illeg. (Warnstorf 1902–1903)
- =Sphagnum subsecundum var. brevifolium Röll, Hedwigia 44: 49. 1905. (Röll 1905)
- =Sphagnum subsecundum var. pygmaeum Röll, Hedwigia 44: 49. 1905. (Röll 1905)
- =Sphagnum subsecundum var. suksdorfii Röll, Hedwigia 44: 49. 1905. (Röll 1905)
- =Sphagnum turgidum var. leptocladum G. Roth, Eur. Torfm. (Roth): 67. 1906. (Roth 1906) ≡Sphagnum subsecundum var. leptocladum (G. Roth) Wijk & Margad., Taxon 14: 198. 1965. (Wijk & Margadant 1965)
- =Sphagnum subsecundum var. capitatum Röll, Hedwigia 46: 237. 1907, nom. illeg. (Röll 1907b)
- =Sphagnum subsecundum var. imbricatum Röll, Hedwigia 46: 237. 1907, nom. illeg. (Röll 1907b)
- =Sphagnum subsecundum var. strictiforme Röll, Hedwigia 46: 237. 1907. (Röll 1907b)
- =Sphagnum bushii Warnst. & Cardot, Hedwigia 47: 94. 1907. (Wijk et al. 1967)
- =Sphagnum subsecundum var. parvulum Warnst., Pflanzenr. 51: 317. 1911. (Warnstorf 1911)
- =Sphagnum subsecundum var. pusillum Schlieph., Pflanzenr. 51: 317. 1911. (Warnstorf 1911)
- =Sphagnum subsecundum f. imbricatum Warnst., Pflanzenr. 51: 318. 1911, nom. illeg. (Warnstorf 1911) ≡Sphagnum subsecundum var. imbricatum Grav. ex Bott., Atti Reale Accad. Lincei, Mem. Cl. Sci. Fis., ser. 5, 13(1): 53. 1919, nom. illeg.
- =Sphagnum subsecundum f. subfalcatum Warnst., Pflanzenr. 51: 318. 1911. (Warnstorf 1911)
- =Sphagnum subsecundum f. viridissimum Warnst., Pflanzenr. 51: 318. 1911. (Warnstorf 1911)
- =Sphagnum subsecundum var. lanceolatum Warnst., Pflanzenr. 51: 319. 1911. (Warnstorf 1911)
- =Sphagnum louisianae Warnst., Pflanzenr. 51: 322. 1911. (Warnstorf 1911; Wilkes Jr. 1965)
- =Sphagnum cochlearifolium Warnst., Pflanzenr. 51: 323. 1911. (Warnstorf 1911; Wijk et al. 1967)
- =Sphagnum bostonense Warnst., Pflanzenr. 51: 348. 1911. (Wijk et al. 1967)
- =Sphagnum fluitans Warnst., Pflanzenr. 51: 351. 1911. (Warnstorf 1911; Wijk et al. 1967)
- =Sphagnum pseudosquarrosum Warnst., Pflanzenr. 51: 353. 1911. (Warnstorf 1911; Wijk et al. 1967)
- =Sphagnum pseudosquarrosum var. bicolor Warnst., Pflanzenr. 51: 354. 1911. (Warnstorf 1911)
- =Sphagnum pseudosquarrosum var. heterophyllum Warnst., Pflanzenr. 51: 354. 1911. (Warnstorf 1911)
- =Sphagnum pseudosquarrosum var. perlaxum Warnst., Pflanzenr. 51: 354. 1911. (Warnstorf 1911)
- =Sphagnum cordifolium Warnst., Pflanzenr. 51: 357. 1911. (Warnstorf 1911; Wijk et al. 1967)
- =Sphagnum cordifolium var. submersum Warnst., Pflanzenr. 51: 359. 1911. (Warnstorf 1911)
- =Sphagnum nicholsii Warnst., Pflanzenr. 51: 384. 1911. (Warnstorf 1911; Wijk et al. 1967)
- =Sphagnum smithianum Warnst., Pflanzenr. 51: 397. 1911. (Warnstorf 1911; Wijk et al. 1967)
- =Sphagnum validum Warnst., Pflanzenr. 51: 417. 1911. (Warnstorf 1911; Wijk et al. 1967)
- =Sphagnum subsecundum var. plumosum Hamm., Mitt. Bayer. Bot. Ges. 2(19): 330. 1911, nom. illeg. (Hammerschmid 1911)
- =Sphagnum subsecundum var. patulum Röll, Hedwigia 56: 87. 1915, nom. illeg. (Röll 1915)
- =Sphagnum subsecundum var. stellatum Bott., Atti Reale Accad. Lincei, Mem. Cl. Sci. Fis., ser. 5, 13(1): 57. 1919. (Bottini 1919)
- =Sphagnum subsecundum var. diversifolium Bott., Atti Reale Accad. Lincei, Mem. Cl. Sci. Fis., ser. 5, 13(1): 58. 1919. (Bottini 1919)
- =Sphagnum subsecundum f. densifolium Pichl., Acta Bot. Inst. Bot. Univ. Zagreb. 3: 54. 1928. (Pichler 1928)
- =Sphagnum crispum R.E. Andrus, Bryologist 86: 260. 1983. (Andrus 1983; McQueen & Andrus 2007)
Sphagnum subtile (Russow) Warnst., Krypt.-Fl. Brandenburg, Leber- & Torfm.: 409, 428. 1903. (Warnstorf 1902–1903; McQueen & Andrus 2007)

Basionym: Sphagnum acutifolium var. subtile Russow, Arch. Naturk. Liv- Ehst- Kurlands, Ser. 2, Biol. Naturk. 10: 509. 1894. (Russow 1894)

≡Sphagnum rubellum var. subtile (Russow) J.J. Amann, Fl. Mouss. Suisse 1: 196. 1918. (Amann & Meylan 1918) ≡Sphagnum nemoreum var. subtile (Russow) Nyholm, Ill. Moss Fl. Fennoscandia. II. Musci: 725. 1969. (Nyholm 1969) ≡Sphagnum capillifolium var. subtile (Russow) Kartt., Ann. Bot. Fenn. 29: 121. 1992. (Söderström et al. 1992)
- =Sphagnum acutifolium var. pulchellum Warnst., Hedwigia 23: 105. 1884. (Warnstorf 1884b) ≡Sphagnum wilsonii var. pulchellum (Warnst.) Röll, Flora 69: 80. 1886. ≡Sphagnum subtile var. pulchellum (Warnst.) Warnst., Pflanzenr. 51: 97. 1911. (Warnstorf 1911)
- =Sphagnum acutifolium var. leptocladum Limpr., Laubm. Deutschl. 1: 113. 1885. (Limpricht 1885–1903; Isoviita 1966) ≡Sphagnum rubellum var. leptocladum (Limpr.) Wijk & Margad., Taxon 14: 198. 1965. (Wijk & Margadant 1965) ≡Sphagnum nemoreum var. leptocladum (Limpr.) Pilous, Fl. ČSSR, C, Bryol. 1: 393. 1971. (Pilous 1971)
- =Sphagnum subtile var. pallescens Mikut., Bryoth. Balt.: 58. 1908. (Mikutowicz 1908)
- =Sphagnum subtile var. diversicolor Warnst., Pflanzenr. 51: 92. 1911. (Warnstorf 1911)
- =Sphagnum subtile var. gracile Warnst., Pflanzenr. 51: 97. 1911. (Warnstorf 1911)
Sphagnum sucrei H.A. Crum, J. Hattori Bot. Lab. 63: 91. 1987. (Crum 1987b; Costa 2021)
- =Sphagnum guanabarae H.A. Crum, J. Hattori Bot. Lab. 63: 90. 1987. (Crum 1987b; Costa & Fares 2012)
Sphagnum sumapazense H.A. Crum, Contr. Univ. Michigan Herb. 21: 158. 1997. (Crum 1997a; Michaelis 2019)
Sphagnum tabuleirense O. Yano & H.A. Crum, Bryologist 95: 343. 1992. (Yano & Crum 1992; Costa 2021)

≡Sphagnum perichaetiale var. tabuleirense (O. Yano & H.A. Crum) Zielman, Fl. Guianas, Ser. C, Bryoph. 2(Musci IV): 27. 2011. (Zielman 2011; Costa 2021)
Sphagnum talbotianum R.E. Andrus, Sida 22: 970. 2006. (Andrus 2006; McQueen & Andrus 2007)
Sphagnum tenellum (Brid.) Bory, Voy. Îles Afrique 3: 107. 1804. (Bory 1804; Hodgetts et al. 2020)

Basionym: Sphagnum cymbifolium var. tenellum Brid., Muscol. Recent. 2(1): 24. 1798. (Bridel 1798)

≡Sphagnum latifolium var. tenellum (Brid.) DC., Fl. Franç. (ed. 3) 2: 442. 1805. (Lamarck & Candolle 1805) ≡Sphagnum obtusifolium var. tenellum (Brid.) F. Weber & D. Mohr, Bot. Taschenb. (Weber): 72. 1807. ≡Sphagnum squarrosum var. tenellum (Brid.) Huebener, Muscol. Germ.: 23. 1833. (Huebener 1833)
- =Sphagnum molluscum Bruch, Flora 8: 635. 1825. (McQueen & Andrus 2007)
- =Sphagnum molluscum var. fluitans Lesq., Mém. Soc. Sci. Nat. Neuchâtel 3(3): 8. 1845. ≡Sphagnum tenellum var. fluitans (Lesq.) Schimp., Monthly Microscop. J. 7: 257. 1872. (Warnstorf 1911)
- =Sphagnum tenellum var. longifolium Lindb., Monthly Microscop. J. 7: 257. 1872. ≡Sphagnum molluscum var. longifolium (Lindb.) Warnst., Eur. Torfm. (Warnstorf): 94. 1881. (Warnstorf 1881; Warnstorf 1911)
- =Sphagnum acutifolium var. arctum Braithw., Monthly Microscop. J. 11: 157. 1874. ≡Sphagnum acutiforme var. arctum (Braithw.) Warnst., Flora 67: 605. 1884. ≡Sphagnum acutifolium f. arctum (Braithw.) Cardot, Bull. Soc. Roy. Bot. Belgique 25: 115. 1886. ≡Sphagnum tenellum var. arctum (Braithw.) Cardot, Bull. Soc. Hist. Nat. Autun 10: 408 [Répert. Sphagnol. 176]. 1897. (Cardot 1897)
- =Sphagnum molluscum var. immersum Schimp., Syn. Musc. Eur. (ed. 2): 846. 1876, nom. illeg. (Schimper 1876; Warnstorf 1911) ≡Sphagnum tenellum var. immersum (Schimp.) Husn., Sphagnol. Eur.: 8. 1882, nom. illeg. ≡Sphagnum molluscum f. immersum Warnst., Pflanzenr. 51: 276. 1911.
- =Sphagnum molluscum var. robustum Warnst., Eur. Torfm. (Warnstorf): 93. 1881. (Warnstorf 1881; Warnstorf 1911) ≡Sphagnum tenellum var. robustum (Warnst.) Husn., Sphagnol. Eur.: 8. 1882. ≡Sphagnum molluscum f. robustum (Warnst.) Warnst., Pflanzenr. 51: 276. 1911.
- =Sphagnum molluscum var. gracile Warnst., Eur. Torfm. (Warnstorf): 94. 1881. (Warnstorf 1881) ≡Sphagnum tenellum var. gracile (Warnst.) Warnst., Flora 67: 602. 1884. ≡Sphagnum molluscum f. gracile (Warnst.) Warnst., Pflanzenr. 51: 276. 1911. (Warnstorf 1911)
- =Sphagnum tenellum var. brebissonii Husn., Sphagnol. Eur.: 8. 1882. ≡Sphagnum molluscum var. brebissonii (Husn.) Cardot, Bull. Soc. Hist. Nat. Autun 10: 339 [Répert. Sphagnol. 107]. 1897. (Cardot 1897; Warnstorf 1911)
- =Sphagnum tenellum var. compactum Warnst., Hedwigia 23: 103. 1884. (Warnstorf 1884b; Warnstorf 1911) ≡Sphagnum molluscum var. compactum (Warnst.) Cardot, Bull. Soc. Hist. Nat. Autun 10: 339 [Répert. Sphagnol. 107]. 1897. (Cardot 1897) ≡Sphagnum molluscum f. compactum (Warnst.) Warnst., Pflanzenr. 51: 276. 1911.
- =Sphagnum tenellum var. suberectum Grav. ex Warnst., Hedwigia 23: 103. 1884. (Warnstorf 1884b; Warnstorf 1911) ≡Sphagnum molluscum var. suberectum (Grav. ex Warnst.) Cardot, Bull. Soc. Hist. Nat. Autun 10: 340 [Répert. Sphagnol. 108]. 1897. (Cardot 1897)
- =Sphagnum tenellum var. confertulum Cardot, Bull. Soc. Roy. Bot. Belgique 25(1): 62, 110. 1886. ≡Sphagnum molluscum var. confertulum (Cardot) Cardot, Bull. Soc. Hist. Nat. Autun 10: 339 [Répert. Sphagnol. 107]. 1897. (Cardot 1897; Warnstorf 1911)
- =Sphagnum tenellum var. acutifolium Röll, Flora 69: 333. 1886. ≡Sphagnum molluscum var. acutifolium (Röll) Cardot, Bull. Soc. Hist. Nat. Autun 10: 339 [Répert. Sphagnol. 107]. 1897. (Cardot 1897)
- =Sphagnum tenellum var. recurvum Röll, Flora 69: 333. 1886. ≡Sphagnum molluscum var. recurvum (Röll) Cardot, Bull. Soc. Hist. Nat. Autun 10: 340 [Répert. Sphagnol. 108]. 1897. (Cardot 1897)
- =Sphagnum tenellum var. strictum Röll, Flora 69: 333. 1886. ≡Sphagnum molluscum var. strictum (Röll) Cardot, Bull. Soc. Hist. Nat. Autun 10: 340 [Répert. Sphagnol. 108]. 1897. (Cardot 1897)
- =Sphagnum tenellum var. contortum Röll, Flora 69: 334. 1886. ≡Sphagnum molluscum var. contortum (Röll) Cardot, Bull. Soc. Hist. Nat. Autun 10: 340 [Répert. Sphagnol. 108]. 1897. (Cardot 1897)
- =Sphagnum tenellum var. glaucovirescens Warnst., Festskr. Bot. Foren. Kjøbenhavn: 99. 1890. (Jensen 1890) ≡Sphagnum molluscum var. glaucovirescens (Warnst.) Cardot, Bull. Soc. Hist. Nat. Autun 10: 340 [Répert. Sphagnol. 108]. 1897. (Cardot 1897)
- =Sphagnum tenellum var. rufescens Grav. ex C.E.O. Jensen, Festskr. Bot. Foren. Kjøbenhavn: 99. 1890. (Warnstorf 1911) ≡Sphagnum molluscum var. rufescens (Grav. ex C.E.O. Jensen) Cardot, Bull. Soc. Hist. Nat. Autun 10: 340 [Répert. Sphagnol. 108]. 1897. (Cardot 1897) ≡Sphagnum molluscum f. rufescens (Grav. ex C.E.O. Jensen) Warnst., Pflanzenr. 51: 276. 1911.
- =Sphagnum tenellum var. abbreviatum Röll, Hedwigia 46: 220. 1907. (Röll 1907b)
- =Sphagnum tenellum var. brachycladum Röll, Hedwigia 46: 220. 1907. (Röll 1907b)
- =Sphagnum tenellum var. laxifolium Röll, Hedwigia 46: 220. 1907. (Röll 1907b)
- =Sphagnum tenellum var. rigidum Röll, Hedwigia 46: 220. 1907. (Röll 1907b)
- =Sphagnum molluscum var. angustifolium Warnst., Pflanzenr. 51: 275. 1911. (Warnstorf 1911) ≡Sphagnum tenellum var. angustifolium (Warnst.) Ihsiba, Cat. Mosses Japan: 13. 1929. (Ihsiba 1929)
- =Sphagnum molluscum var. hydrophilum Warnst., Pflanzenr. 51: 275. 1911. (Warnstorf 1911) ≡Sphagnum tenellum var. hydrophilum (Warnst.) Wijk & Margad., Taxon 14: 198. 1965. (Wijk & Margadant 1965)
- =Sphagnum molluscum var. vulgatum Warnst., Pflanzenr. 51: 276. 1911, nom. illeg. (Warnstorf 1911; Wijk et al. 1967)
- =Sphagnum tenellum var. patulum Röll, Hedwigia 60: 24. 1918. (Röll 1918)
- =Sphagnum tenellum var. platyphyllum Röll, Hedwigia 60: 24. 1918. (Röll 1918)
- =Sphagnum tenellum var. squarrosulum Röll, Hedwigia 60: 24. 1918. (Röll 1918)
Sphagnum tenerum Sull. & Lesq., Manual (ed. 2): 611. 1856. (Sullivant 1856; McQueen & Andrus 2007)

≡Sphagnum molle var. tenerum (Sull. & Lesq.) Braithw., Sphagnac. Eur.: 55. 1880. (Braithwaite 1878) ≡Sphagnum nemoreum var. tenerum (Sull. & Lesq.) Nyholm, Ill. Moss Fl. Fennoscandia. II. Musci: 725. 1969. (Nyholm 1969) ≡Sphagnum capillaceum var. tenerum (Sull. & Lesq.) H.A. Crum, Bryologist 74: 168. 1971. (Crum 1971) ≡Sphagnum capillifolium var. tenerum (Sull. & Lesq.) H.A. Crum, Contr. Univ. Michigan Herb. 11: 90. 1975. (Crum 1975)
- =Sphagnum tenerum Warnst., Hedwigia 29: 194. 1890, nom. illeg. (Andrus 1980a)
- =Sphagnum purpuratum Müll. Hal. ex Warnst., Hedwigia 29: 207. 1890. (Costa 2021)
- =Sphagnum campicola Müll. Hal. ex Warnst., Hedwigia 29: 208. 1890. (Crum 1990b)
- =Sphagnum aracense Warnst., Hedwigia 47: 107. 1907. (Wijk et al. 1967)
- =Sphagnum purpuratum f. laxifolium Warnst., Pflanzenr. 51: 125. 1911. (Warnstorf 1911)
- =Sphagnum purpuratum var. rubens Warnst., Pflanzenr. 51: 125 (Sphagnol. Univ. 125). 1911. (Warnstorf 1911)
- =Sphagnum purpuratum var. versicolor Warnst., Pflanzenr. 51: 125 (Sphagnol. Univ. 125). 1911. (Warnstorf 1911)
- =Sphagnum purpuratum var. viride Warnst., Pflanzenr. 51: 125 (Sphagnol. Univ. 125). 1911. (Warnstorf 1911)
- =Sphagnum usteri Warnst., Pflanzenr. 51: 88. 1911. (Warnstorf 1911; Yano 1996)
- =Sphagnum usteri var. versicolor Warnst., Pflanzenr. 51: 89. 1911. (Warnstorf 1911)
- =Sphagnum usteri var. viride Warnst., Pflanzenr. 51: 89. 1911. (Warnstorf 1911)
- =Sphagnum tenerum var. congestum Pichl., Acta Bot. Inst. Bot. Univ. Zagreb. 3: 50. 1928. (Pichler 1928)
- =Sphagnum tenerum var. speciosum Pichl., Acta Bot. Inst. Bot. Univ. Zagreb. 3: 50. 1928. (Pichler 1928)
- =Sphagnum tenerum var. virginicum H.A. Crum & L.E. Anderson, Bryologist 97: 282. 1994. (Crum & Anderson 1994; McQueen & Andrus 2007) ≡Sphagnum capillifolium var. virginicum (H.A. Crum & L.E. Anderson) H.A. Crum, J. Hattori Bot. Lab. 82: 95. 1997. (Crum 1997b)
Sphagnum teres (Schimp.) Ångstr. ex C. Hartm., Handb. Skand. Fl. (ed. 8): 417. 1861. (Hartman 1861; Hodgetts et al. 2020)

Basionym: Sphagnum squarrosum var. teres Schimp., Vers. Entw.-Gesch. Torfm.: 64. 1858. (Schimper 1858)

≡Sphagnum squarrosum subsp. teres (Schimp.) Kavina, Sitzungsber. Königl. Böhm. Ges. Wiss. Prag, Math.-Naturwiss. Cl. 1912(11): 116. 1913.
- =Sphagnum tenellum Pers. ex Nees & Hornsch., Bryol. Germ. 1: 8. 1823, nom. illeg. (Nees von Esenbeck et al. 1823; McQueen & Andrus 2007) ≡Sphagnum latifolium var. tenellum Spreng., Syst. Veg. [Sprengel] 4(1): 147. 1827, nom. illeg. (Sprengel 1827)
- =Sphagnum squarrosum var. tenellum Pers., Deutschl. Krypt.-Fl. 2: 74. 1848, nom. illeg. (Michaelis 2019)
- =Sphagnum squarrosum var. squarrosulum Schimp., Vers. Entw.-Gesch. Torfm.: 64. 1858. ≡Sphagnum squarrosulum (Schimp.) Lesq., Mem. Calif. Acad. Sci. 1: 3. 1868. (Crum 1984b) ≡Sphagnum teres var. squarrosulum (Schimp.) Warnst., Bot. Centralbl. 9(4): 132. 1882. ≡Sphagnum teres f. squarrosulum (Schimp.) C.E.O. Jensen, Danmarks Mosser 1: 291. 1915.
- =Sphagnum squarrosum var. subteres Lindb., Sphagnac. Eur.: 61. 1880. (Braithwaite 1878) ≡Sphagnum teres var. subteres (Lindb.) Röll, Flora 69: 241. 1886. (Warnstorf 1911)
- =Sphagnum teres var. compactum Warnst., Eur. Torfm. (Warnstorf): 125. 1881. (Warnstorf 1881; Warnstorf 1911) ≡Sphagnum teres subf. compactum (Warnst.) Warnst., Pflanzenr. 51: 164. 1911.
- =Sphagnum teres var. gracile Warnst., Eur. Torfm. (Warnstorf): 125. 1881, nom. illeg. (Warnstorf 1881; Wijk et al. 1967)
- =Sphagnum teres var. ovatum Warnst., Bot. Centralbl. 9: 132. 1882. (Warnstorf 1911) ≡Sphagnum teres f. ovatum (Warnst.) Warnst., Pflanzenr. 51: 165. 1911.
- =Sphagnum teres var. flotowii Warnst., Flora 66: 378. 1883. (Warnstorf 1911) ≡Sphagnum teres f. flotowii (Warnst.) Warnst., Pflanzenr. 51: 165. 1911.
- =Sphagnum squarrosulum var. laxum Schlieph., Irmischia 4: 10. 1884. ≡Sphagnum teres var. laxum (Schlieph.) Warnst., Hedwigia 23: 120. 1884. (Warnstorf 1884b; Warnstorf 1911) ≡Sphagnum teres f. laxum (Schlieph.) Warnst., Pflanzenr. 51: 164. 1911.
- =Sphagnum teres var. submersum Warnst., Hedwigia 23: 120. 1884. (Warnstorf 1884b; Warnstorf 1911) ≡Sphagnum teres f. submersum (Warnst.) Warnst., Pflanzenr. 51: 165. 1911.
- =Sphagnum teres var. subsquarrosum Warnst., Hedwigia 23: 120. 1884. (Warnstorf 1884b; Warnstorf 1911)
- =Sphagnum squarrosum var. limbatum Cardot, Rev. Bryol. 11: 55. 1884. (Cardot 1884) ≡Sphagnum teres f. limbatum (Cardot) Cardot, Bull. Soc. Roy. Bot. Belgique 25(1): 75, 113. 1886. (Cardot 1886)
- =Sphagnum teres var. strictum Cardot, Bull. Soc. Roy. Bot. Belgique 25(1): 75, 113. 1886, nom. illeg. (Warnstorf 1911) ≡Sphagnum squarrosum var. strictum Hérib., Mém. Acad. Sci. Clermont-Ferrand, sér. 2, 14: 450. 1899. ≡Sphagnum teres f. strictum Warnst., Pflanzenr. 51: 164. 1911, nom. illeg.
- =Sphagnum teres var. elegans Röll, Flora 69: 239. 1886. (Warnstorf 1911) ≡Sphagnum teres f. elegans (Röll) Warnst., Pflanzenr. 51: 164. 1911.
- =Sphagnum teres var. gracile Röll, Flora 69: 239. 1886, nom. illeg. (Wijk et al. 1967) ≡Sphagnum teres f. gracile Warnst., Pflanzenr. 51: 164. 1911, nom. illeg.
- =Sphagnum teres var. deflexum Röll, Flora 69: 240. 1886. (Warnstorf 1911)
- =Sphagnum teres var. geheebii Röll, Flora 69: 240. 1886. (Warnstorf 1911) ≡Sphagnum teres f. geheebii (Röll) Warnst., Pflanzenr. 51: 164. 1911.
- =Sphagnum teres var. robustum Röll, Flora 69: 240. 1886. (Warnstorf 1911) ≡Sphagnum teres f. robustum (Röll) Warnst., Pflanzenr. 51: 164. 1911.
- =Sphagnum teres f. patulum Röll, Flora 69: 241. 1886. ≡Sphagnum teres var. patulum (Röll) Röll, Allg. Bot. Z. Syst. 17: 21. 1911. (Röll 1911a)
- =Sphagnum teres var. imbricatum Warnst., Bot. Gaz. 15: 224. 1890, nom. illeg. (Warnstorf 1890b)
- =Sphagnum teres var. fuscescens C.E.O. Jensen, Festskr. Bot. Foren. Kjøbenhavn: 79. 1890. (Jensen 1890)
- =Sphagnum teres var. intricatum Grav., Festskr. Bot. Foren. Kjøbenhavn: 79. 1890. (Jensen 1890)
- =Sphagnum teres var. viride C.E.O. Jensen, Festskr. Bot. Foren. Kjøbenhavn: 79. 1890. (Jensen 1890)
- =Sphagnum teres var. reticulatum C.E.O. Jensen, Festskr. Bot. Foren. Kjøbenhavn: 80. 1890. (Jensen 1890)
- =Sphagnum teres var. densum Röll, Bot. Centralbl. 46: 405. 1891. (Röll 1891c)
- =Sphagnum teres var. tenellum Röll, Bot. Centralbl. 46: 405. 1891. (Röll 1891c)
- =Sphagnum teres var. molle Röll, Hedwigia 36: 328. 1897. (Röll 1897a)
- =Sphagnum squarrosum var. bielewskii Hérib., Mém. Acad. Sci. Clermont-Ferrand, sér. 2, 14: 450. 1899. (Héribaud 1899)
- =Sphagnum ochraceum Głow., Jahrb. Naturhist. Landesmus. Kärnten 27: 96. 1904, nom. illeg. (Crum 1984b)
- =Sphagnum teres var. deflexum G. Roth, Hedwigia 47: 323. 1908, nom. illeg. (Roth 1908)
- =Sphagnum teres var. strictiusculum G. Roth, Hedwigia 47: 323. 1908. (Roth 1908)
- =Sphagnum teres var. capitatum Röll, Allg. Bot. Z. Syst. 17: 20. 1911. (Röll 1911a)
- =Sphagnum teres var. flagellare Röll, Hedwigia 51: 108. 1911. (Röll 1911b)
- =Sphagnum teres var. microcephalum Röll, Hedwigia 64: 209. 1923. (Röll 1923b)
- =Sphagnum teres var. crassicaule Röll, Hedwigia 64: 210. 1923. (Röll 1923b)
Sphagnum tescorum Flatberg, Lindbergia 32: 100. 2007. (Flatberg 2007b; Hodgetts et al. 2020)
Sphagnum torreyanum Sull., Mem. Amer. Acad. Arts, n.s. 4(1): 174. 1849[1850]. (Sullivant 1849; Michaelis 2019)

≡Sphagnum cuspidatum var. torreyanum (Sull.) Austin, Amer. J. Sci. Arts, ser. 2, 35(104): 255. 1863. ≡Sphagnum cuspidatum var. torreyi Braithw., Monthly Microscop. J. 13: 64. 1875, nom. illeg. (Michaelis 2019) ≡Sphagnum variabile var. torreyanum (Sull.) Warnst., Eur. Torfm. (Warnstorf): 73. 1881. (Warnstorf 1881) ≡Sphagnum recurvum var. torreyanum (Sull.) Cardot, Bull. Soc. Roy. Bot. Belgique 25(1): 101. 1886. (Cardot 1886) ≡Sphagnum laxifolium var. torreyanum (Sull.) Röll, Flora 69: 237. 1886. ≡Sphagnum recurvum subsp. torreyanum (Sull.) J.J. Amann, Fl. Mouss. Suisse 1: 194. 1918. (Amann & Meylan 1918)
- =Sphagnum laxifolium var. miquelonense Renauld & Cardot ex Röll, Flora 69: 237. 1886. ≡Sphagnum cuspidatum var. miquelonense (Renauld & Cardot ex Röll) Renauld & Cardot, Bull. Soc. Roy. Bot. Belgique 26: 56. 1887. ≡Sphagnum miquelonense (Renauld & Cardot ex Röll) Warnst., Nat. Pflanzenfam. I(3): 256. 1901. (Warnstorf 1901; Crum 1984b) ≡Sphagnum torreyanum var. miquelonense (Renauld & Cardot ex Röll) Warnst., Krypt.-Fl. Brandenburg, Leber- & Torfm.: 384. 1903. (Warnstorf 1902–1903)
- =Sphagnum kearneyi Warnst., Hedwigia 39: 102. 1900. (Crum 1984b)
- =Sphagnum torreyanum var. robustum Röll, Hedwigia 46: 226. 1907. (Röll 1907b)
- =Sphagnum torreyanum var. plumosum Warnst., Pflanzenr. 51: 234. 1911. (Warnstorf 1911)
- =Sphagnum torreyanum var. submersum Röll, Hedwigia 59: 298. 1917. (Röll 1917)
Sphagnum tosaense Warnst., Hedwigia 47: 122. 1908. (Michaelis 2019)
†Sphagnum triangulatum Ananova, Pyl'tsa Neogen. Otlozh. Juga Russk. Ravn.: 103. 1974.
Sphagnum trinitense Müll. Hal., Syn. Musc. Frond. 1: 102. 1848. (Müller 1848; McQueen & Andrus 2007)
- =Sphagnum serratum Austin, Bull. Torrey Bot. Club 6: 145. 1877. (McQueen & Andrus 2007) ≡Sphagnum cuspidatum var. serratum (Austin) Austin, Bull. Torrey Bot. Club 7: 15. 1880. ≡Sphagnum subsecundum var. serratum (Austin) Rau & Herv., Cat. N. Amer. Musci: 49. 1880.
- =Sphagnum helleri Warnst., Allg. Bot. Z. Syst. 11: 100. 1905. (McQueen & Andrus 2007) ≡Sphagnum trinitense var. helleri (Warnst.) Warnst., Pflanzenr. 51: 218. 1911. (Warnstorf 1911)
- =Sphagnum trinitense var. plumosum Röll, Hedwigia 46: 226. 1907. (Röll 1907b)
- =Sphagnum trinitense var. falcatum Broeck, Bull. Soc. Roy. Bot. Belgique 45: 370. 1909. (Broeck 1908)
- =Sphagnum trinitense var. lorifolium G. Roth ex Broeck, Bull. Soc. Roy. Bot. Belgique 45: 371. 1909. (Broeck 1908)
- =Sphagnum trinitense f. molle Broeck, Bull. Soc. Roy. Bot. Belgique 45: 371. 1909. (Broeck 1908)
- =Sphagnum trinitense f. rigidum Broeck, Bull. Soc. Roy. Bot. Belgique 45: 371. 1909. (Broeck 1908)
- =Sphagnum trinitense var. angustifolium Warnst., Pflanzenr. 51: 218. 1911. (Warnstorf 1911)
- =Sphagnum serratum var. angustifolium Warnst., Pflanzenr. 51: 246. 1911. (Warnstorf 1911)
- =Sphagnum serratum var. latifolium Warnst., Pflanzenr. 51: 246. 1911, nom. illeg. (Warnstorf 1911; Wijk et al. 1967)
- =Sphagnum serratum var. mesophyllum Warnst., Pflanzenr. 51: 246. 1911. (Warnstorf 1911)
Sphagnum trirameum H.A. Crum, Bryologist 92: 104. 1989. (Crum 1989b; Michaelis 2019)
Sphagnum triseriporum (H. Suzuki) A.J. Shaw, Amer. J. Bot. 100(6): 1215. 2013. (Shaw et al. 2013)

Basionym: Sphagnum guwassanense subsp. triseriporum H. Suzuki, J. Sci. Hiroshima Univ., Ser. B, Div. 2, Bot. 6: 294. 1954.
Sphagnum troendelagicum Flatberg, Lindbergia 14: 33. 1988. (Flatberg 1988d; Hodgetts et al. 2020)
Sphagnum trollii H.A. Crum, Novon 12: 443. 2002. (Crum 2002; Michaelis 2019)
Sphagnum truncatum Hornsch., Linnaea 15: 114. 1841. (Hornschuch 1841; Michaelis 2019)
- =Sphagnum coronatum Müll. Hal., Flora 70: 412. 1887. (Müller 1887; Eddy 1985)
- =Sphagnum fluctuans Müll. Hal., Flora 70: 414. 1887. (Müller 1887; Eddy 1985)
- =Sphagnum coronatum var. cuspidatum Rehmann, Hedwigia 29: 185. 1890. (Eddy 1985)
- =Sphagnum convolutum Warnst., Hedwigia 29: 217, 220. 1890. (Warnstorf 1890d; Eddy 1985) ≡Sphagnum marginatum var. convolutum (Warnst.) Warnst., Pflanzenr. 51: 309. 1911. (Warnstorf 1911)
- =Sphagnum oxycladum Warnst., Hedwigia 30: 15. 1891. (Eddy 1985)
- =Sphagnum marginatum Schimp. ex Warnst., Hedwigia 30: 28. 1891. (Eddy 1985)
- =Sphagnum coronatum var. falcatum Müll. Hal. ex Warnst., Pflanzenr. 51: 306. 1911. (Warnstorf 1911; Eddy 1985)
- =Sphagnum marginatum var. diversifolium Warnst., Pflanzenr. 51: 310. 1911. (Warnstorf 1911; Magill 1981)
Sphagnum truncatum var. bordasii (Besch.) A. Eddy, Bull. Brit. Mus. (Nat. Hist.), Bot. 12: 106. 1985. (Eddy 1985; Michaelis 2019)

Basionym: Sphagnum bordasii Besch., Ann. Sci. Nat., Bot., sér. 6, 10: 330. 1880. (Bescherelle 1880; Eddy 1985)
- =Sphagnum oligodon Rehmann ex Müll. Hal., Flora 70: 412. 1887. (Müller 1887; Eddy 1985)
- =Sphagnum mathieui Warnst., Bull. Soc. Roy. Bot. Belgique 41(1): 7. 1905. (Renauld & Cardot 1902–1903; Eddy 1985)
- =Sphagnum mathieui var. subsquarrosum Warnst., Bull. Soc. Roy. Bot. Belgique 41(1): 8. 1905. (Renauld & Cardot 1902–1903; O'Shea 2006)
- =Sphagnum oligodon var. bachmannii Warnst., Pflanzenr. 51: 363. 1911. (Warnstorf 1911; Eddy 1985)
- =Sphagnum oligodon var. beyrichii Warnst., Pflanzenr. 51: 364. 1911. (Warnstorf 1911; Eddy 1985)
- =Sphagnum eschowense Warnst., Pflanzenr. 51: 398. 1911. (Warnstorf 1911; Eddy 1985)
Sphagnum truncatum Hornsch. var. truncatum
†Sphagnum tuberculatum Rybakova, S.B. Smirnova, Chernyshova & Z.I. Kazakova, Zakon. Istor. Razv. Organ.: 118. 1982.
Sphagnum tumidulum Besch., Ann. Sci. Nat., Bot., sér. 6, 10: 329. 1880. (Bescherelle 1880; Michaelis 2019)
- =Sphagnum aculeatum Warnst., Bot. Centralbl. 9: 97. 1882. (Eddy 1985)
- =Sphagnum hildebrandtii Müll. Hal., Flora 70: 420. 1887. (Müller 1887; Eddy 1985)
- =Sphagnum mucronatum Müll. Hal., Flora 70: 421. 1887, nom. illeg. (Müller 1887; Eddy 1985)
- =Sphagnum tumidulum var. macrophyllum Warnst., Hedwigia 30: 129. 1891. (Warnstorf 1891a; Eddy 1985)
- =Sphagnum tumidulum var. microphyllum Warnst., Hedwigia 30: 129. 1891. (Warnstorf 1891a; Eddy 1985)
Sphagnum tumidulum var. confusum A. Eddy, Bull. Brit. Mus. (Nat. Hist.), Bot. 12: 120. 1985. (Eddy 1985; O'Shea 2006)
Sphagnum tumidulum Besch. var. tumidulum
Sphagnum tundrae Flatberg, Lindbergia 19: 3. 1994. (Flatberg 1994; Hodgetts et al. 2020)
Sphagnum turgens Warnst., Bot. Centralbl. 20(2): 132. 1906. (Costa 2021)
Sphagnum turgescens Warnst., Hedwigia 34: 131. 1895. (Brotherus 1895; Michaelis 2019)
Sphagnum uruguayense H.A. Crum, Novon 12: 443. 2002. (Crum 2002; Michaelis 2019)
Sphagnum venustum Flatberg, Lindbergia 33: 2. 2008. (Flatberg 2008; Hodgetts et al. 2020)
Sphagnum versiporum Warnst., Pflanzenr. 51: 420. 1911. (Warnstorf 1911; Michaelis 2019)
Sphagnum violascens Müll. Hal., Flora 70: 422. 1887. (Müller 1887; Michaelis 2019)
- =Sphagnum ericetorum Besch., Ann. Sci. Nat., Bot., sér. 6, 10: 328. 1880, nom. illeg. (Bescherelle 1880; Eddy 1985)
- =Sphagnum acutifolium var. borbonicum Renauld & Cardot, Hedwigia 29: 196. 1890. (Michaelis 2019)
- =Sphagnum obtusiusculum Lindb. ex Warnst., Hedwigia 29: 196. 1890. (Michaelis 2019)
- =Sphagnum obtusiusculum f. dasybrachyclada Warnst., Hedwigia 29: 197. 1890. (Warnstorf 1911)
- =Sphagnum obtusiusculum var. purpurascens Warnst., Hedwigia 29: 197. 1890. (O'Shea 2006)
- =Sphagnum purpureum Schimp. ex Warnst., Hedwigia 29: 197. 1890. (Eddy 1985)
- =Sphagnum cordemoyi Warnst., Hedwigia 36: 150. 1897. (Eddy 1985)
- =Sphagnum obtusiusculum var. pallescens Warnst., Pflanzenr. 51: 92. 1911. (Warnstorf 1911; O'Shea 2006)
- =Sphagnum scotiae Cardot, Trans. Roy. Soc. Edinburgh 48: 70. 1911. (Cardot 1911; Eddy 1985)
Sphagnum vitalii H.A. Crum, Bryologist 94: 301. 1991. (Crum 1991; Costa 2021)
- =Sphagnum matogrossense H.A. Crum, Novon 12: 441. 2002. (Crum 2002; Costa 2021)
Sphagnum warnstorfii Russow, Schriften Naturf.-Ges. Univ. Dorpat. 3: 28, 33–34. 1887. (Russow 1887; Hodgetts et al. 2020)

≡Sphagnum acutifolium subsp. warnstorfii (Russow) Hérib., Mém. Acad. Sci. Clermont-Ferrand, sér. 2, 14: 445. 1899. ≡Sphagnum wilsonii subsp. warnstorfii (Russow) Röll, Hedwigia 42(Beibl.): 26. 1903. ≡Sphagnum warnstorfianum Du Rietz, Svensk Bot. Tidskr. 38: 405. 1945, nom. illeg. (Sjörs 1944)
- =Sphagnum acutifolium var. gracile Russow, Arch. Naturk. Liv- Ehst- Kurlands, Ser. 2, Biol. Naturk. 7: 122. 1865, nom. illeg. (Michaelis 2019) ≡Sphagnum warnstorfii var. gracile Röll, Allg. Bot. Z. Syst. 17: 19. 1911.
- =Sphagnum acutifolium var. intermedium Austin, Musci Appalach.: 15. 1870. (Austin 1870; Michaelis 2019)
- =Sphagnum girgensohnii var. submersum Röll, Flora 69: 133. 1886. ≡Sphagnum warnstorfii var. submersum (Röll) Warnst., Pflanzenr. 51: 59. 1911. (Warnstorf 1911)
- =Sphagnum wilsonii f. plumosum Röll, Flora 69: 80. 1886. ≡Sphagnum wilsonii var. plumosum (Röll) Röll, Hedwigia 46: 209. 1907. ≡Sphagnum warnstorfii var. plumosum (Röll) Röll, Allg. Bot. Z. Syst. 17: 19. 1911. (Röll 1911a)
- =Sphagnum acutifolium var. graeffii Schlieph., Verh. Bot. Vereins Prov. Brandenburg 30: 106. 1888, nom. illeg. (Michaelis 2019)
- =Sphagnum warnstorfii var. purpurascens Russow, Bot. Gaz. 15: 140. 1890. (Warnstorf 1911)
- =Sphagnum warnstorfii var. viride Russow, Bot. Gaz. 15: 140. 1890. (Warnstorf 1911)
- =Sphagnum warnstorfii var. purpureum Warnst., Festskr. Bot. Foren. Kjøbenhavn: 90. 1890. (Jensen 1890)
- =Sphagnum warnstorfii var. virescens Russow ex Warnst., Schriften Naturf. Ges. Danzig 9: 154. 1896. (Warnstorf 1911)
- =Sphagnum warnstorfii f. squarrosulum Warnst., Schriften Naturf. Ges. Danzig 9(2): 154. 1897. ≡Sphagnum wilsonii var. squarrosulum (Warnst.) Röll, Hedwigia 46: 210. 1907. ≡Sphagnum warnstorfii var. squarrosulum (Warnst.) Warnst., Allg. Bot. Z. Syst. 17: 19. 1911. (Röll 1911a)
- =Sphagnum warnstorfii var. carneum Warnst., Krypt.-Fl. Brandenburg, Leber- & Torfm.: 423. 1903. (Warnstorf 1902–1903)
- =Sphagnum warnstorfii var. flavescens Russow ex Warnst., Krypt.-Fl. Brandenburg, Leber- & Torfm.: 423. 1903. (Warnstorf 1911)
- =Sphagnum warnstorfii var. flavoglaucescens Warnst., Krypt.-Fl. Brandenburg, Leber- & Torfm.: 423. 1903. (Warnstorf 1911)
- =Sphagnum warnstorfii var. versicolor Russow, Krypt.-Fl. Brandenburg, Leber- & Torfm.: 423. 1903. (Warnstorf 1911)
- =Sphagnum warnstorfii var. elegans G. Roth, Eur. Torfm. (Roth): 49. 1906. (Roth 1906)
- =Sphagnum warnstorfii var. strictiusculum G. Roth, Eur. Torfm. (Roth): 49. 1906. (Roth 1906)
- =Sphagnum wilsonii var. densum Röll, Hedwigia 46: 210. 1907, nom. illeg. ≡Sphagnum warnstorfii var. densum Röll, Allg. Bot. Z. Syst. 17: 19. 1911. (Röll 1911a)
- =Sphagnum wilsonii var. molluscum Röll, Hedwigia 46: 210. 1907. (Röll 1911a) ≡Sphagnum warnstorfii var. molluscum Röll, Allg. Bot. Z. Syst. 17: 19. 1911.
- =Sphagnum wilsonii var. tenellum Röll, Hedwigia 46: 210. 1907, nom. illeg. ≡Sphagnum warnstorfii var. tenellum Röll, Allg. Bot. Z. Syst. 17: 19. 1911. (Röll 1911a)
- =Sphagnum warnstorfii var. capitatum Röll, Allg. Bot. Z. Syst. 17: 19. 1911. (Röll 1911a)
- =Sphagnum warnstorfii var. deflexum Röll, Allg. Bot. Z. Syst. 17: 19. 1911. (Röll 1911a)
- =Sphagnum warnstorfii var. patulum Röll, Allg. Bot. Z. Syst. 17: 19. 1911, nom. illeg. (Röll 1911a)
- =Sphagnum warnstorfii var. fuscorubescens Warnst., Pflanzenr. 51: 73. 1911. (Warnstorf 1911)
- =Sphagnum warnstorfii var. pallescens Warnst., Pflanzenr. 51: 73. 1911. (Warnstorf 1911)
- =Sphagnum warnstorfii var. compactum Röll ex Bott., Atti Reale Accad. Lincei, Mem. Cl. Sci. Fis., ser. 5, 13(1): 34. 1919. (Bottini 1919)
- =Sphagnum warnstorfii var. strictum Bott., Atti Reale Accad. Lincei, Mem. Cl. Sci. Fis., ser. 5, 13(1): 34. 1919, nom. illeg. (Bottini 1919)
Sphagnum wheeleri Müll. Hal., Flora 70: 416. 1887. (Müller 1887; Karlin 2001)
- =Sphagnum rigidulum Warnst., Hedwigia 29: 241. 1890. (Warnstorf 1890d; Karlin 2001)
- =Sphagnum vulcanicum Warnst., Bot. Centralbl. 82: 11. 1900. (Karlin 2001) ≡Sphagnum wheeleri var. vulcanicum (Warnst.) Warnst., Pflanzenr. 51: 150. 1911. (Warnstorf 1911)
Sphagnum wilfii H.A. Crum, N. Amer. Fl., ser. 2, 11: 90. 1984. (Crum 1984b; Michaelis 2019)
Sphagnum wulfianum Girg., Naturgesch. Laub- Leberm. Kurlands: 173. 1860. (Girgensohn 1860b; Hodgetts et al. 2020)
- =Sphagnum pycnocladum Ångstr., Öfvers. Kongl. Vetensk.-Akad. Förh. 21: 202. 1864. (Ångström 1864; Crum 1984b)
- =Sphagnum wulfianum var. squarrulosum Russow, Arch. Naturk. Liv- Ehst- Kurlands, Ser. 2, Biol. Naturk. 7: 146. 1865. (Warnstorf 1911) ≡Sphagnum wulfianum subf. squarrulosum (Russow) Warnst., Pflanzenr. 51: 141. 1911.
- =Sphagnum wulfianum f. congestum Russow, Beitr. Torfm.: 68. 1865. (Warnstorf 1911)
- =Sphagnum wulfianum f. remotum Russow, Beitr. Torfm.: 68. 1865. (Warnstorf 1911)
- =Sphagnum wulfii Lindb., Contr. Fl. Crypt. As.: 264. 1872[1873], nom. illeg. (Lindberg 1872)
- =Sphagnum wulfii var. squarrosulum Braithw., Monthly Microscop. J. 12: 170. 1874, nom. illeg. (Wijk et al. 1967)
- =Sphagnum wulfianum var. squarrosulum Russow ex Warnst., Eur. Torfm. (Warnstorf): 57. 1881, nom. illeg. (Warnstorf 1881; Wijk et al. 1967)
- =Sphagnum wulfianum var. versicolor Warnst., Bot. Gaz. 15: 225. 1890. (Warnstorf 1911)
- =Sphagnum wulfianum var. viride Warnst., Bot. Gaz. 15: 225. 1890. (Warnstorf 1911)
- =Sphagnum wulfianum var. pumilum Warnst. ex Zick., Bull. Soc. Imp. Naturalistes Moscou, n.s. 1900(3): 262. 1900. (Zickendrath 1901; Warnstorf 1911) ≡Sphagnum wulfianum f. pumilum (Warnst. ex Zick.) Warnst., Pflanzenr. 51: 141. 1911.
- =Sphagnum wulfianum f. robustum Warnst., Pflanzenr. 51: 141. 1911. (Warnstorf 1911)
- =Sphagnum wulfianum var. fuscescens Warnst., Pflanzenr. 51: 143. 1911. (Warnstorf 1911)

A Synopsis of Sphagnum

References (442)