Deoxyribonucleic Acid Base Composition and Numerical Taxonomy of Yeasts in the Genus Trichosporon

Of the 49 strains of Trichosporon yeasts studied, 40 were retained in the genus and assigned to 10 species. The others were transferred to the genera Candida and Endomycopsis. The DNA base composition was determined for a representative of each Trichosporon species. On the basis of guanine and cytosine content ( % GC), the species were arranged into four groups: (a) about 55 % GC, Trichosporon aculeatum, T. aquatile, T. cutaneum, T. inkin and T. pullulans; (6) about 64 % GC