Phylum Ascomycota Caval.-Sm. (1998) - sac fungi Subphylum Pezizomycotina O.E. Erikss. & Winka (1997) Class Arthoniomycetes O.E. Erikss. & Winka (1997) Order Lichenostigmatales Ertz, Diederich & Lawrey (2014) [monotypic] Family Phaeococcomycetaceae McGinnis & Schell (1985) Genus Lichenostigma Hafellner (1983)