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)
         1 Order Xylonomycetales Gazis & P. Chaverri (2012), orth. inval.