Phylum Ascomycota Caval.-Sm. (1998) - sac fungi
   Subphylum Pezizomycotina O.E. Erikss. & Winka (1997)
     Class Laboulbeniomycetes Engl. (1897)
       Order Laboulbeniales Lindau (1897)
         1 Family Ceratomycetaceae S. Colla (1934)
         2 Family Euceratomycetaceae I.I. Tav. (1980)
         3 Family Herpomycetaceae I.I. Tav. (1981)
         4 Family Laboulbeniaceae G.Winter (1886)