Phylum Ascomycota Caval.-Sm. (1998) - sac fungi Subphylum Pezizomycotina O.E. Erikss. & Winka (1997) Class Lecanoromycetes O.E. Erikss. & Winka (1997) Subclass Ostropomycetidae V. Reeb, Lutzoni & Cl.Roux (2004) Order Ostropales Nannf. (1932) Family Odontotremataceae D.Hawksw. & Sherwood (1982) Genus Bryodiscus B. Hein, E. Müll. & Poelt (1971)