Phylum Ascomycota Caval.-Sm. (1998) - sac fungi Subphylum Pezizomycotina O.E. Erikss. & Winka (1997) Class Laboulbeniomycetes Engl. (1897) Order Laboulbeniales Lindau (1897) Family Laboulbeniaceae G.Winter (1886) Genus Hydraeomyces Thaxt. (1896)