Kingdom Fungi R.T.Moore (1980) - fungi
   Subkingdom Dikarya Hibbett, T.Y. James & Vilgalys (2007)
     Phylum Ascomycota Caval.-Sm. (1998) - sac fungi
       Subphylum Saccharomycotina O.E. Erikss. & Winka (1997) - budding yeasts
         Class Saccharomycetes O.E. Erikss. & Winka (1997), nom. inval. see Class Saccharomycetes G.Winter (1880)
           Order Saccharomycetales Luerss. (1877)
             Genus Saccharomyces Meyen (1838)