Phylum Ascomycota Caval.-Sm. (1998) - sac fungi Subphylum Pezizomycotina O.E. Erikss. & Winka (1997) Class Lecanoromycetes O.E. Erikss. & Winka (1997) Subclass Lecanoromycetidae P.M.Kirk, P.F. Cannon, J.C. David & Stalpers ex Miądl., Lutzoni & Lumbsch (2007) Order Lecanorales Nannf. (1932) Family Psilolechiaceae S. Stenroos, Miądl. & Lutzoni (2014) [monotypic] 1 Genus Psilolechia A.Massal. (1860)