asexual fungi R.T.Moore (1980) - fungi
   Phylum Basidiomycota R.T.Moore (1980) - basidiomycetes
     Subphylum Agaricomycotina Doweld (2001)
       Class Tremellomycetes Doweld (2001)
         Order Cystofilobasidiales Fell, Roeijmans & Boekhout (1999)
           Family Cystofilobasidiaceae K. Wells & Bandoni (2001)
             1 Anamorph genus Guehomyces Fell & Scorzetti (2004), nom. inval.
             2 Anamorph genus Itersonilia Derx (1948)
             3 Anamorph genus Rhodozyma Phaff, M.W. Mill., Yoney. & Soneda (1972), nom. inval.