Phylum Ascomycota Caval.-Sm. (1998) - sac fungi
   Subphylum Pezizomycotina O.E. Erikss. & Winka (1997)
     Class Leotiomycetes O.E. Erikss. & Winka (1997)
       Order Helotiales Nannf. (1932)
         Family Helotiaceae Rehm (1892), nom. cons.
           01 Genus Articulospora Ingold (1942)
           02 Genus Ascoconidium Seaver (1942)
           03 Genus Bisporella Sacc. (1884)
           04 Genus Bryoscyphus Spooner (1984)
           05 Genus Calycella (Sacc.) Sacc. (1899)
           06 Genus Cudoniella Sacc. (1889)
           07 Genus Cyathicula De Not. (1863)
           08 Genus Dicephalospora Spooner (1987)
           09 Genus Dimorphospora Tubaki (1958)
           10 Genus Discorehmia Kirschst. (1936)
           11 Genus Eubelonis Höhn. (1926)
           12 Genus Filosporella Nawawi (1976)
           13 Genus Fontanospora Dyko (1978)
           14 Genus Geniculospora Sv. Nilsson ex Marvanová & Sv. Nilsson (1971)
           15 Genus Glarea Bills & Paláez (1999)
           16 Genus Gloeotinia M. Wilson, Noble & E.G. Gray (1954), nom. protect.
           17 Genus Graddonia Dennis (1955)
           18 Genus Gremmenia Korf (1962)
           19 Genus Helicodendron Peyronel (1918)
           20 Genus Hymenoscyphus Gray (1821)
           21 Genus Hymenotorrendiella P.R. Johnst., Baral & R. Galán (2014)
           22 Genus Muscicola Velen. (1934)
           23 Genus Mycofalcella Marvanová, Om-Kalth. & J. Webster (1993)
           24 Genus Mytilodiscus Kropp & S.E. Carp. (1984)
           25 Genus Neocrinula Crous (2016)
           26 Genus Phaeohelotium Kanouse (1935)
           27 Genus Pithyella Boud. (1885)
           28 Genus Pseudohelotium Fuckel (1870)
           29 Genus Pseudoniptera Velen. (1947)
           30 Genus Scytalidium Pesante (1957)
           31 Genus Symphyosirinia E.A. Ellis (1956)
           32 Genus Tatraea Svrček (1993)
           33 Genus Tricladium Ingold (1942)
           34 Genus Xylogramma Wallr. (1833)