Phylum Bryophyta A.Braun (1864) - bryophytes
   Class Polytrichopsida Doweld (2001)
     Order Polytrichales M. Fleisch.
       Family Polytrichaceae Schwägr.
         01 Genus Alophosia Cardot (1905)
         02 Genus Atrichopsis Cardot (1912)
         03 Genus Atrichum P.Beauv. (1804), nom. cons.
         04 Genus Bartramiopsis Kindb. (1894)
         05 Genus Dawsonia R.Br. (1811)
         06 Genus Dendroligotrichum (Müll.Hal.) Broth. (1905)
         07 Genus Hebantia G.L.Merr. (1996)
         08 Genus Itatiella G.L. Sm. (1971)
         09 Genus Lyellia R.Br. (1819)
         10 Genus Meiotrichum (G.L. Sm.) G.L.Merr.
         11 Genus Notoligotrichum G.L. Sm. (1971)
         12 Genus Oligotrichum DC. (1805), nom. cons.
         13 Genus Plagioracelopus G.L.Merr. (1987)
         14 Genus Pogonatum P.Beauv. (1804)
         15 Genus Polytrichadelphus (Müll.Hal.) Mitt. (1859)
         16 Genus Polytrichastrum G.L. Sm. (1971)
         17 Genus Polytrichum Hedw. (1801)
         18 Genus Pseudatrichum Reimers (1941)
         19 Genus Pseudoracelopus Broth. (1910) see Genus Pogonatum P.Beauv. (1804)
         20 Genus Psilopilum Brid. (1827)
         21 Genus Racelopodopsis Thér. (1907) see Genus Pogonatum P.Beauv. (1804)
         22 Genus Racelopus Dozy & Molk. (1855) see Genus Pogonatum P.Beauv. (1804)
         23 Genus Steereobryon G.L. Sm. (1971)