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)
             Order Ostropales Nannf. (1932)
               1 Genus Ostropa Fr. (1825)
               2 Genus Stictis Pers. (1800), nom. sanct.
               3 Genus Gyalecta Ach. (1808)
               4 Genus Gomphillus Nyl. (1855)
               5 Genus Graphis Adans. (1763), nom. sanct.
               6 Genus Odontotrema Nyl. (1858)
               7 Genus Porina sensu Müll.Arg. (1883) see Genus Porina Ach. (1809), nom. cons.
               8 Genus Thelotrema Ach. (1803)