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 Roussoellaceae Jian K. Liu, Phookamsak, D.Q. Dai & K.D.Hyde (2014)
             1 Genus Appendispora K.D.Hyde (1994)
             2 Genus Cytoplea Bizz. & Sacc. (1885)
             3 Genus Elongatopedicellata Jin F. Zhang, Jian K. Liu, K.D.Hyde & Zi Y. Liu (2015)
             4 Genus Immotthia M.E.Barr (1987)
             5 Genus Neoroussoella Jian K. Liu, Phookamsak & K.D.Hyde (2014)
             6 Genus Roussoella Sacc. (1888)
             7 Genus Roussoellopsis I.Hino & Katum. (1965)