Phylum Ascomycota Caval.-Sm. (1998) - sac fungi
   Subphylum Pezizomycotina O.E. Erikss. & Winka (1997)
     Superclass Leotiomyceta O.E. Erikss. & Winka (1997)
       Class Leotiomycetes O.E. Erikss. & Winka (1997)
         ?Order Rhytismatales M.E.Barr ex Minter (1986)
           1 Genus Rhytisma Fr. (1819), nom. sanct.