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 Pertusariales M. Choisy ex D.Hawksw. & O.E. Erikss. (1986) Family Coccotremataceae Henssen ex J.C. David & D.Hawksw. (1991) Genus Coccotrema Müll.Arg. (1888)