asexual fungi R.T.Moore (1980) - fungi
   Phylum Ascomycota Caval.-Sm. (1998) - sac fungi
     Subphylum Pezizomycotina O.E. Erikss. & Winka (1997)
       Class Xylonomycetes Gazis & P. Chaverri (2012)
         Order Xylonomycetales Gazis & P. Chaverri (2012), orth. inval.
           Family Xylonomycetaceae Gazis & P. Chaverri (2012), orth. inval.
             1 Anamorph genus Symbiotaphrina Kühlw. & Jurzitza ex W. Gams & Arx (1980)
             2 Anamorph genus Trinosporium Crous & Decock (2012)
             3 Anamorph genus Xylona Gazis & P. Chaverri (2012)