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)
         1 Order Cyttariales Luttr. ex Gamundí (1971)
         2 Order Erysiphales Warm. (1884)
         3 Order Leotiales Carp. (1988)
         4 ?Order Rhytismatales M.E.Barr ex Minter (1986)