Phylum Ascomycota Caval.-Sm. (1998) - sac fungi
   Subphylum Pezizomycotina O.E. Erikss. & Winka (1997)
     Class Dothideomycetes O.E. Erikss. & Winka (1997)
       Family Arthopyreniaceae Walt. Watson (1929)
         1 Genus Arthopyrenia A.Massal. (1852), nom. cons.
         2 Genus Athrismidium Trevis. (1860)
         3 Genus Mycomicrothelia Keissl. (1936)