Kingdom Fungi R.T.Moore (1980) - fungi
   Subkingdom Dikarya Hibbett, T.Y. James & Vilgalys (2007)
     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 Baeomycetales Lumbsch, Huhndorf & Lutzoni (2007)
             3 Order Ostropales Nannf. (1932)
             4 Order Pertusariales M. Choisy ex D.Hawksw. & O.E. Erikss. (1986)