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 Sydowiellaceae Lar.N. Vassiljeva (1987)
               1 Genus Breviappendix Senan. & K.D.Hyde (2017)
               2 Genus Hapalocystis Auersw. ex Fuckel (1863)
               3 Genus Lambro Racib. (1900)
               4 Genus Uleoporthe Petr. (1941)
               5 Genus Paragnomonia Senan. & K.D.Hyde (2017)
               6 Genus Tenuiappendicula Senan., Camporesi & K.D.Hyde (2017)