organisms see Clade Biota Wagner 2004 [Wiemann, de Queiroz, Rowe, Planavsky, Anderson, Gogarten, Turner & Gauthier 2020]
   Domain Eukaryota Chatton, 1925 - eukaryotes
     Kingdom Fungi R.T.Moore (1980) - fungi
       Phylum Basidiomycota R.T.Moore (1980) - basidiomycetes
         Class Basidiomycetes G.Winter (1880)
           Subclass Agaricomycetidae Locq. ex Parmasto (1986)
             Order Agaricales Underw. (1899)
               Family Marasmiaceae Roze ex Kühner (1980)
                 01 Genus Amyloflagellula Singer (1966)
                 02 Genus Anastrophella E.Horak & Desjardin (1994)
                 03 Genus Anthracophyllum Ces. (1879)
                 04 Genus Aphyllotus Singer (1973)
                 05 Genus Armillaria (Fr.) Staude (1857)
                 06 Genus Baeospora Singer (1938)
                 07 Genus Calathella D.A. Reid (1964)
                 08 Genus Campanella Henn. (1895)
                 09 Genus Cephaloscypha Agerer (1975)
                 10 Genus Chaetocalathus Singer (1943)
                 11 Genus Cymatella Pat. (1899)
                 12 Genus Cymatellopsis Parmasto (1985)
                 13 Genus Cyptotrama Singer (1960)
                 14 Genus Dactylosporina (Clémençon) Dörfelt (1985)
                 15 Genus Deigloria Agerer (1980)
                 16 Genus Epicnaphus Singer (1960)
                 17 Genus Favolaschia (Pat.) Pat. (1892)
                 18 Genus Fissolimbus E.Horak (1979)
                 19 Genus Flagelloscypha Donk (1951)
                 20 Genus Flammulina P.Karst. (1891)
                 21 Genus Gerronema Singer (1951)
                 22 Genus Glabrocyphella W.B. Cooke (1961)
                 23 Genus Hispidocalyptella E.Horak & Desjardin (1994)
                 24 Genus Hymenogloea Pat. (1900)
                 25 Genus Lachnella Fr. (1836)
                 26 Genus Lecanocybe Desjardin & E.Horak (1999)
                 27 Genus Lentinula Earle (1909)
                 28 Genus Macrocystidia Joss. (1934)
                 29 Genus Manuripia Singer (1960)
                 30 Genus Marasmiellus Murrill (1915)
                 31 Genus Marasmius Fr. (1836), nom. cons.
                 32 Genus Merismodes Earle (1909)
                 33 Genus Nochascypha Agerer (1983)
                 34 Genus Omphalotus Fayod (1889)
                 35 Genus Oudemansiella Speg. (1881)
                 36 Genus Phaeodepas D.A. Reid (1961)
                 37 Genus Physalacria Peck (1882)
                 38 Genus Pseudotyphula Corner (1953)
                 39 Genus Rhodocollybia Singer (1939)
                 40 Genus Setulipes Antonín (1987) see Genus Gymnopus (Pers.) Roussel (1806)
                 41 Genus Skepperiella Pilát (1927)
                 42 Genus Stipitocyphella G. Kost (1998)
                 43 Genus Strobilurus Singer (1962)
                 44 Genus Stromatocyphella W.B. Cooke (1961)
                 45 Genus Tetrapyrgos E.Horak (1987)
                 46 Genus Xerula Maire (1933)