Phylum Ascomycota Caval.-Sm. (1998) - sac fungi
   Subphylum Pezizomycotina O.E. Erikss. & Winka (1997)
     Class Dothideomycetes O.E. Erikss. & Winka (1997)
       Subclass Pleosporomycetidae C.L. Schoch, Spatafora, Crous & Shoemaker (2007)
         Order Pleosporales Luttr. ex M.E.Barr (1987)
           Family Didymellaceae Gruyter, Aveskamp & Verkley (2009)
             01 Genus Allophoma Qian Chen & L. Cai (2015)
             02 Genus Ascochyta Lib. (1830)
             03 Genus Boeremia Aveskamp, Gruyter & Verkley (2010)
             04 Genus Calophoma Qian Chen & L. Cai (2015)
             05 Genus Chaetasbolisia Speg. (1918)
             06 Genus Didymella Sacc. (1880)
             07 Genus Didymellocamarosporium Wijayaw., Camporesi, Bhat & K.D.Hyde (2016)
             08 Genus Didysimulans Tibpromma, Camporesi & K.D.Hyde (2017)
             09 Genus Endocoryneum Petr. (1922)
             10 Genus Epicoccum Link (1816), nom. sanct.
             11 Genus Heterophoma Qian Chen & L. Cai (2015)
             12 Genus Leptosphaerulina McAlpine (1902)
             13 Genus Macroventuria Aa (1971)
             14 Genus Mixtura O.E. Erikss. & J.Z. Yue (1990)
             15 Genus Monascostroma Höhn. (1918)
             16 Genus Neoascochyta Qian Chen & L. Cai (2015)
             17 Genus Neodidymelliopsis Qian Chen & L. Cai (2015)
             18 Genus Nothophoma Qian Chen & L. Cai (2015)
             19 Genus Paraboeremia Qian Chen & L. Cai (2015)
             20 Genus Peyronellaea Goid. ex Togliani (1952)
             21 Genus Phaeomycocentrospora Crous, H.D. Shin & U.Braun (2012)
             22 Genus Phoma Sacc. (1880), nom. cons.
             23 Genus Phomatodes Qian Chen & L. Cai (2015)
             24 Genus Platychora Petr. (1925)
             25 Genus Pseudohendersonia Crous & M.E. Palm (1999)
             26 Genus Stagonosporopsis Died. (1912)
             27 Genus Xenodidymella Qian Chen & L. Cai (2015)