| Abstract | The numbers of yeasts of the soils of the Matador site of the International Biological Program, in southern Saskatchewan, varied from about 1400 to 10 000 cells/g soil in the surface layer and from 600 to 1800 cells/g in the subsurface layers. Most of the cultures isolated were Cryptococcus albidus and its variety diffluens, Cryptococcus laurentii, and Cryptococcus terreus. A few cultures of Cryptococcus dimennae, Rhodotorula minuta, Sporobolomyces pararoseus, and Sporobolomyces salmonicolor were also isolated. Most of the cultures isolated could use rutin and many of them used the other flavonoids tested. Many of them used phloroglucinol and a few used naphthalene. |
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