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 Stictidaceae Fr. (1849) Genus Trinathotrema Lücking, Rivas Plata & Mangold (2011)