Phylum Ascomycota Caval.-Sm. (1998) - sac fungi
   Subphylum Pezizomycotina O.E. Erikss. & Winka (1997)
     Class Lecanoromycetes O.E. Erikss. & Winka (1997)
       Family Arthrorhaphidaceae Poelt & Hafellner (1976), incertae sedis [monotypic]
         1 Genus Arthrorhaphis Th.Fr. (1860), nom. cons.