Phylum Ascomycota Caval.-Sm. (1998) - sac fungi Subphylum Pezizomycotina O.E. Erikss. & Winka (1997) Class Laboulbeniomycetes Engl. (1897) 1 Order Laboulbeniales Lindau (1897) 2 Order Pyxidiophorales P.F. Cannon (2001) [monotypic] 3 Genus Laboulbeniopsis Thaxt. (1920), incertae sedis