Between brackets is the number of accepted species
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2 Shows the number of accepted species within the taxon
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- Biota
- Kingdom Animalia
- Kingdom Archaea
- Kingdom Bacteria
- Kingdom Chromista
- Kingdom Fungi
- Kingdom Plantae
- Phylum Acritarcha †
- Phylum Algae (awaiting allocation)
- Phylum Algae incertae sedis
- Phylum Anthocerotophyta
- Phylum Bryophyta
- Class Andreaeobryopsida
- Class Andreaeopsida
- Class Bryophyta (awaiting allocation)
- Class Bryopsida
- Order Archidiales
- Order Aulacomniales accepted as Rhizogoniales
- Order Bryales
- Order Bryopsida (awaiting allocation)
- Order Buxbaumiales
- Order Dawsoniales
- Order Dicranales
- Order Encalyptales
- Order Fissidentales
- Order Funariales
- Order Grimmiales
- Order Hedwigiales
- Order Hookeriales
- Order Hypnales
- Order Hypnobryales
- Family Acrocladiaceae R. Tangney, D. Quandt, S. Huttunen & M. Stech in Tangney et al., 2010
- Family Amblystegiaceae
- Genus Amblystegiella Loeske, 1903
- Genus Amblystegium W.P. Schimper in Bruch, W.P. Schimper & Gümbel, 1853
- Genus Apterygium Kindberg, 1885
- Genus Arvernella V. Hugonnot & L. Hedenäs, 2015
- Genus Barbella M. Fleischer ex V.F. Brotherus in Engler & Prantl, 1906
- Genus Bardunovia M.S. Ignatov & R. Ochyra, 1995 accepted as Platydictya M.J. Berkeley, 1863
- Genus Callialaria R. Ochyra, 1989
- Genus Calliergidium (F. Renauld) A.J. Grout, 1929
- Genus Calliergon (W.S. Sullivant) Kindberg, 1894
- Genus Campyliadelphus (Kindberg) R.S. Chopra, 1975
- Genus Campylidium (N.C. Kindberg) R. Ochyra, 2003
- Genus Campylium (W.S. Sullivant) Mitten, 1869
- Genus Chrysohypnum Hampe, 1870 accepted as Chryso-hypnum Hampe, 1870
- Genus Chryso-hypnum Hampe, 1870
- Genus Chryso-Hypnum (Hampe) G. Roth, 1899
- Genus Cirriphyllum Grout, 1898
- Genus Conardia H. Robinson, 1976
- Genus Cratoneuron (Sullivant) Spruce, 1867
- Genus Cratoneuropsis (V.F. Brotherus) M. Fleischer, 1923
- Genus Cratoneurum I. Hagen, 1910 accepted as Cratoneuron (Sullivant) Spruce, 1867
- Genus Donrichardsia H.A. Crum & L.E. Anderson, 1979
- Genus Drepanocladus (Müller Hal.) G. Roth, 1899
- Genus Drepanocladus Müller Hal., 1898
- Genus Drepanohypnum Hampe, 1872 accepted as Drepanocladus (Müller Hal.) G. Roth, 1899
- Genus Drepano-Hypnum Hampe, 1872 accepted as Drepanocladus (Müller Hal.) G. Roth, 1899
- Genus Drepanophyllaria (Müller Hal.) Müller Hal., 1896
- Genus Eurhynchium W.P. Schimper in Bruch, W.P. Schimper & Gümbel, 1854
- Genus Eurrhynchium I. Hagen, 1910 accepted as Eurhynchium W.P. Schimper in Bruch, W.P. Schimper & Gümbel, 1854
- Genus Gradsteinia R. Ochyra, 1990
- Genus Hamatocaulis L. Hedenäs, 1989
- Genus Harpidium (W.S. Sullivant) Spruce, 1867
- Genus Helicodontium Schwägrichen, 1830
- Genus Hygroamblystegium Loeske, 1903
- Genus Hygrohypnum S.O. Lindberg, 1873
- Genus Hypnites Ettingshausen, 1855 †
- Genus Hypnobartlettia R. Ochyra, 1985
- Genus Koponenia R. Ochyra, 1986
- Genus Larrainia W.R. Buck in Buck & Goffinet, 2015
- Genus Leucomium Mitten, 1868
- Genus Limbella (Müller Hal.) Brotherus, 1927
- Genus Limnobium W.P. Schimper in Bruch, W.P. Schimper & Gümbel, 1853
- Genus Limprichtia Loeske, 1907
- Genus Loeskypnum H. Paul, 1918
- Genus Microamblystegium V.E. Fedosov, E.A. Ignatova & J. Kučera in Fedosov et al., 2021
- Genus Microhypnum J. Kučera & M.S. Ignatov in Kučera et al., 2019
- Genus Microthamnium Mitten, 1869
- Genus Mittenothamnium Hennings, 1902
- Genus Myrinia W.P. Schimper, 1860
- Genus Neocalliergon R.S. Williams, 1930 †
- Genus Ochyraea J. Vána, 1986
- Genus Orthotheciella (J.K.A. Müller) R. Ochyra, 1998
- Genus Palustriella R. Ochyra, 1989
- Genus Pictus C.C. Townsend, 1982
- Genus Platydictya M.J. Berkeley, 1863
- Genus Platyhypnum Loeske, 1911
- Genus Platyhypnum Hampe, 1852 accepted as Platy-hypnum Hampe, 1852
- Genus Platy-hypnum Hampe, 1852
- Genus Platylomella A.L. Andrews, 1950
- Genus Pseudoamblystegium A. Vanderpoorten & L. Hedenäs, 2009
- Genus Pseudocalliergon (Limpricht) Loeske, 1907
- Genus Pseudocampylium A. Vanderpoorten & L. Hedenäs, 2009
- Genus Rhynchostegiella (W.P. Schimper) Limpricht, 1896
- Genus Rhynchostegium W.P. Schimper in Bruch et al., 1852
- Genus Richardsiopsis R. Ochyra, 1986
- Genus Sanionia Loeske, 1907
- Genus Sarmenthypnum R. Tuomikoski & T. Koponen ex L.E. Anderson, H.A. Crum & W.R. Buck, 1990 accepted as Sarmentypnum R. Tuomikoski & T. Koponen, 1979
- Genus Sarmentypnum R. Tuomikoski & T. Koponen, 1979
- Genus Sasaokaea Brotherus, 1929
- Genus Sciaromiella R. Ochyra, 1987
- Genus Sciaromiopsis V.F. Brotherus, 1924
- Genus Sciaromium (Mitten) Mitten, 1869
- Genus Scleropodium W.P. Schimper in Bruch et al., 1853
- Genus Scorpidium (W.P. Schimper) Limpricht, 1899
- Genus Serpoleskea (Hampe ex Limpricht) Loeske, 1905
- Genus Sinocalliergon K. Sakurai, 1949
- Genus Skitophyllum Bachelot de la Pylaie, 1814
- Genus Straminergon L. Hedenäs, 1993
- Genus Vittia R. Ochyra, 1987
- Genus Warnstorfia Loeske, 1907
- Species Warnstorfia austrostraminea (C. Müller in Neumayer) Ochyra, 1996
- Species Warnstorfia exannulata Loeske, 1907
- Species Warnstorfia fluitans Loeske, 1907
- Species Warnstorfia luipichensis Hedenäs, 1993
- Species Warnstorfia procera Tuomikoski, 1973
- Species Warnstorfia pseudosarmentosa Tuomikoski & T. Koponen, 1979
- Species Warnstorfia pseudostraminea Tuomikoski & T. Koponen, 1979
- Species Warnstorfia sarmentosa Hedenäs, 1993
- Species Warnstorfia trichophylla Tuomikoski & T. Koponen, 1979
- Species Warnstorfia tundrae Loeske, 1907
- Family Brachytheciaceae
- Family Callicladiaceae J. Kučera & M.S. Ignatov in Kučera et al., 2019
- Family Donrichardsiaceae †
- Family Echinodiaceae
- Family Entodontaceae
- Family Hylocomiaceae
- Family Hypnaceae
- Family Hypnobartlettiaceae
- Family Hypnobryales (awaiting allocation)
- Family Jocheniaceae J. Kučera & M.S. Ignatov in Kučera et al., 2019
- Family Lembophyllaceae
- Family Leucomiaceae
- Family Myriniaceae
- Family Plagiotheciaceae
- Family Pleuroziopsaceae
- Family Pleuroziopsidaceae
- Family Racopilaceae
- Family Rhytidiaceae
- Family Rigodiaceae
- Family Scorpidiaceae Ignatov & Ignatova, 2004
- Family Stereodontaceae S. Schlesak, L. Hedenäs, M. Nebel & D. Quandt, 2018
- Family Thuidiaceae
- Order Isobryales
- Order Leucodontales
- Order Orthodontiales accepted as Rhizogoniales
- Order Orthotrichales
- Order Pleurocarpae (awaiting allocation)
- Order Pottiales
- Order Protosphagnales †
- Order Pseudoditrichales
- Order Rhizogoniales
- Order Scouleriales
- Order Seligeriales accepted as Grimmiales
- Order Splachnales
- Family Flexitrichaceae M.S. Ignatov & V.E. Fedosov in Fedosov et al., 2016
- Family Tricostaceae G.W.K. Shelton, R.A. Stockey, G.R. Rothwell & A.M.F. Tomescu, 2015 †
- Genus Capimirinus I.C. Christiano De Souza, F.S. Ricardi Branco & Y.L. Vargas, 2012 †
- Genus Livingstonites E.I. Vera, 2011 †
- Genus Vetiplanaxis N.E. Bell in N.E. Bell & P.V. York, 2007 †
- Class Hepaticopsida accepted as Marchantiophyta
- Class Oedipodiopsida
- Class Polytrichopsida
- Class Sphagnopsida
- Class Takakiopsida
- Class Tetraphidopsida
- Genus Heinrichsiella A.C. Bippus, A. Savoretti, I.H. Escapa, J. Garcia-Massini & D. Guido, 2019 †
- Phylum Calcitarcha †
- Phylum Charophyta
- Phylum Chlorophyta
- Phylum Eophyta †
- Phylum Glaucophyta
- Phylum Gymnospermophyta accepted as Tracheophyta
- Phylum Horneophyta †
- Phylum Magnoliophyta accepted as Tracheophyta
- Phylum Marchantiophyta
- Phylum Picozoa
- Phylum Plantae (awaiting allocation)
- Phylum Prasinodermatophyta
- Phylum Pteridophyta accepted as Tracheophyta
- Phylum Rhodelphidia
- Phylum Rhodophyta
- Phylum Sporae dispersae †
- Phylum Tracheophyta
- Phylum Vendophyta † accepted as Algae incertae sedis
- Class Nematophyceae † accepted as Nematophyta †
- Kingdom Protista accepted as Protozoa
- Kingdom Protozoa
- Kingdom Viruses
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