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) 01 Order Arctomiales S. Stenroos, Miądl. & Lutzoni (2014) [monotypic] 02 Order Baeomycetales Lumbsch, Huhndorf & Lutzoni (2007) 03 Order Hymeneliales S. Stenroos, Miądl. & Lutzoni (2014) [monotypic] 04 Order Ostropales Nannf. (1932) 05 Order Pertusariales M. Choisy ex D.Hawksw. & O.E. Erikss. (1986) 06 Order Sarrameanales Hodk. & Lendemer (2011) 07 Order Trapeliales Hodk. & Lendemer (2011) 08 Genus Aspilidea Hafellner (2001), incertae sedis 09 Genus Dictyocatenulata Finley & E.F. Morris (1967), incertae sedis 10 Genus Pleiopatella Rehm (1908), incertae sedis 11 Genus Spirographa Zahlbr. (1903), incertae sedis