most yeasts used industrially are in the genus saccharomyces.the trem "wild yeast" is applied to any yeast other than the one being used or encouraged. thus a yeast employed in one process could bea wild yeast in another.most of the troublesome wild yeasts are asporogenous,or false,yeasts.
Genus Schizosaccharomyces These yeasts,which reproduce asexually by fission and form four or eight ascospores per ascus after isogamic conjugation,have been found in tropical fruits,molasses,soil,honey,and elsewhere.A common species is S. pombe.