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) 1 Order Agyriales Clem. & Shear (1931) see Order Pertusariales M. Choisy ex D.Hawksw. & O.E. Erikss. (1986) 2 Order Gyalectales Henssen ex D.Hawksw. & O.E. Erikss. (1986) see Order Ostropales Nannf. (1932) 3 Order Ostropales Nannf. (1932) 4 Order Pertusariales M. Choisy ex D.Hawksw. & O.E. Erikss. (1986) 5 Order Trichotheliales Hafellner & Kalb (1995) see Order Ostropales Nannf. (1932) 6 Family Arctomiaceae Th.Fr. (1860) 7 Family Hymeneliaceae Körb. (1855) 8 ?Genus Aspilidea Hafellner (2001)