Phylum Ascomycota Caval.-Sm. (1998) - sac fungi
   Subphylum Pezizomycotina O.E. Erikss. & Winka (1997)
     Class Pezizomycetes O.E. Erikss. & Winka (1997) [monotypic]
       Order Pezizales J.Schröt. (1894)
         Family Rhizinaceae Bonord. (1851)
           1 Genus Phymatotrichopsis Hennebert (1973)
           2 Genus Psilopezia Berk. (1847)
           3 Genus Rhizina Fr. (1815), nom. sanct.