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)
         1 Order Hysteriales Lindau (1896) [monotypic]
         2 Order Mytilinidiales E.W.A. Boehm, C.L. Schoch & Spatafora (2009)
         3 Order Pleosporales Luttr. ex M.E.Barr (1987)
         4 Genus Acrogenospora M.B.Ellis (1971), nom. protect., incertae sedis
         5 Genus Hysterographium Corda (1842), incertae sedis