Phylum Ascomycota Caval.-Sm. (1998) - sac fungi
   Subphylum Pezizomycotina O.E. Erikss. & Winka (1997)
     Class Eurotiomycetes O.E. Erikss. & Winka (1997)
       Subclass Eurotiomycetidae Tehler ex Geiser & Lutzoni (2007), nom. inval.
         Order Onygenales Cif. ex Benny & Kimbr. (1980)
           Family Ajellomycetaceae Unter., J.A. Scott & Sigler (2004)
             Genus Blastomyces Gilchrist & W.R. Stokes (1898), nom. cons. prop.