@article{mbs:/content/journal/micro/10.1099/00221287-77-2-427, author = "Campbell, I.", title = "Numerical Analysis of Hansenula, Pichia and Related Yeast Genera", journal= "Microbiology", year = "1973", volume = "77", number = "2", pages = "427-441", doi = "https://doi.org/10.1099/00221287-77-2-427", url = "https://www.microbiologyresearch.org/content/journal/micro/10.1099/00221287-77-2-427", publisher = "Microbiology Society", issn = "1465-2080", type = "Journal Article", abstract = "SUMMARY: Numerical analysis of published standard descriptions of the eight species of Debaryomyces, 48 species of Pichia and the single species of Wingea failed to distinguish separate genera. It is proposed that they be combined as a single genus Pichia of 41 species, three of which were formerly allocated to the genus Endomycopsis. The genus Hansenula, of 20 species including Pachysolen tanno-philus and three former species of Endomycopsis, is closely related to the genus Pichia and is distinguished only by the ability of Hansenula species to assimilate nitrate. In the genus Schwanniomyces the number of species is reduced from four to two, and in Lipomyces, from three to one.", }