Phylum Ascomycota Caval.-Sm. (1998) - sac fungi
   Subphylum Pezizomycotina O.E. Erikss. & Winka (1997)
     Class Dothideomycetes O.E. Erikss. & Winka (1997)
       Family Vizellaceae H.J. Swart (1971)
         1 Genus Blasdalea Sacc. & P.Syd. (1902)
         2 Genus Vizella Sacc. (1883)