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 Arthoniomycetes O.E. Erikss. & Winka (1997)
           Order Arthoniales Henssen ex D.Hawksw. & O.E. Erikss. (1986)
             Genus Roccella DC. (1805), nom. cons.