asexual fungi R.T.Moore (1980) - fungi
   Phylum Ascomycota Caval.-Sm. (1998) - sac fungi
     Subphylum Pezizomycotina O.E. Erikss. & Winka (1997)
       Class Sordariomycetes O.E. Erikss. & Winka (1997)
         Subclass Diaportheomycetidae orth. inval. see Subclass Diaporthomycetidae Senan., Maharachch. & K.D.Hyde (2015)
           Order Diaporthales Nannf. (1932)
             Family Gnomoniaceae G.Winter (1885), nom. cons.
               Genus Plagiostoma Fuckel (1870), nom. protect.