Kingdom Fungi R.T.Moore (1980) - fungi
   Subkingdom Dikarya Hibbett, T.Y. James & Vilgalys (2007)
     Phylum Basidiomycota R.T.Moore (1980) - basidiomycetes
       Subphylum Agaricomycotina Doweld (2001)
         Class Tremellomycetes Doweld (2001)
           Order Cystofilobasidiales Fell, Roeijmans & Boekhout (1999)
             1 Genus Cystofilobasidium Oberw. & Bandoni (1983)
             2 Genus Mrakia Y. Yamada & Komag. (1987)
             3 Genus Itersonilia Derx (1948)