Phylum Ascomycota Caval.-Sm. (1998) - sac fungi
   Subphylum Pezizomycotina O.E. Erikss. & Winka (1997)
     Class Leotiomycetes O.E. Erikss. & Winka (1997)
       01 Order Cyttariales Luttr. ex Gamundí (1971) [monotypic]
       02 Order Erysiphales Warm. (1884) [monotypic]
       03 Order Helotiales Nannf. (1932)
       04 Order Lahmiales O.E. Erikss. (1986) [monotypic]
       05 Order Lauriomycetales Hern.-Restr., R.F.Castañeda & Guarro (2017) [monotypic]
       06 Order Leotiales Carp. (1988) [monotypic]
       07 Order Medeolariales Korf (1973) [monotypic]
       08 Order Phacidiales Bessey (1907)
       09 Order Rhytismatales M.E.Barr ex Minter (1986)
       10 Order Thelebolales P.F. Cannon (2001) [monotypic]
       11 Order Triblidiales O.E. Erikss. (1992) [monotypic]
       12 Family Amorphothecaceae Parbery (1969), incertae sedis
       13 Family Myxotrichaceae Currah (1985), incertae sedis
       14 Family Pseudeurotiaceae Malloch & Cain (1970), incertae sedis
       15 Genus Adelodiscus Syd. (1931), incertae sedis
       16 Genus Bagnisimitrula S.Imai (1942), incertae sedis
       17 Genus Callerascus Whitton, K.D.Hyde & McKenzie (2011), incertae sedis
       18 Genus Deltopyxis Baral & G. Marson (2012), incertae sedis
       19 Genus Epicladonia D.Hawksw. (1981), incertae sedis
       20 Genus Exochalara W. Gams & Hol.-Jech. (1976), incertae sedis
       21 Genus Gelatinomyces Sanoam., Jitjak, Rodtong & Whalley (2013), incertae sedis
       22 Genus Gorgomyces M. Gönczöl & Révay (1985), incertae sedis
       23 Genus Helicocentralis Sri-indr., Chuaseehar., Boonyuen, K. Yamag., Suetrong & C.K.M. Tsui (2015), incertae sedis
       24 Genus Helotiella Sacc. (1884), nom. dub., incertae sedis
       25 Genus Leohumicola N.L. Nick., Hambl. & Seifert (2005), incertae sedis
       26 Genus Melanormia Körb. (1865), incertae sedis
       27 Genus Metapezizella Petr. (1968), incertae sedis
       28 Genus Ocotomyces H.C. Evans & Minter (1985), incertae sedis
       29 Genus Phyllopezis Petr. (1949), incertae sedis
       30 Genus Physmatomyces Rehm (1900), incertae sedis
       31 Genus Polydiscidium Wakef. (1934), incertae sedis
       32 Genus Polydiscina Syd. (1930), incertae sedis
       33 Genus Psilothecium Clem. (1903), nom. illeg., incertae sedis
       34 Genus Schnablia Sacc. & P.Syd. (1899), incertae sedis
       35 Genus Tetrachaetum Ingold (1942), incertae sedis
       36 Genus Trullula Ces. (1852), incertae sedis