Phylum Ascomycota Caval.-Sm. (1998) - sac fungi
   Subphylum Pezizomycotina O.E. Erikss. & Winka (1997)
     Class Dothideomycetes O.E. Erikss. & Winka (1997)
       Order Phaeotrichales Ariy., J.K. Liu & K.D.Hyde (2013), incertae sedis [monotypic]
         Family Phaeotrichaceae Cain (1956)
           1 Genus Echinoascotheca Matsush. (1995)
           2 Genus Phaeotrichum Cain & M.E.Barr (1956)
           3 Genus Trichodelitschia Munk (1953)