Phylum Ascomycota Caval.-Sm. (1998) - sac fungi
   Subphylum Saccharomycotina O.E. Erikss. & Winka (1997) - budding yeasts
     Class Saccharomycetes G.Winter (1880)
       Order Saccharomycetales Luerss. (1877)
         01 Family Ascoideaceae J.Schröt. (1894)
         02 Family Cephaloascaceae L.R. Batra (1973)
         03 Family Dipodascaceae Engl. & E. Gilg (1924)
         04 Family Endomycetaceae J.Schröt. (1893)
         05 Family Eremotheciaceae Kurtzman (1995) see Family Saccharomycetaceae G.Winter (1881)
         06 Family Lipomycetaceae E.K. Novák & Zsolt (1961)
         07 Family Metschnikowiaceae T. Kamienski (1899)
         08 Family Saccharomycetaceae G.Winter (1881)
         09 Family Saccharomycodaceae Kudrjanzev (1960)
         10 Family Saccharomycopsidaceae Arx & van der Walt (1987)
         11 Genus Ascobotryozyma J. Kerrigan, M.T. Sm. & J.D. Rogers (2001)