Geotrichum is a –lamentous yeast-like fungus found worldwide in soil, water, air, and sewage, as well as in plants, cereals, and dairy products [1-3]. It is also found in normal human ¼ora and is isolated from sputum and feces. The genus Geotrichum includes 18 species, some of which can be pathogenic to humans [4-7]. The classi–cation of arthroconidial yeast-like strains has long been problematic, and a crucial issue of fungal taxonomists has been the differentiation between the genus Trichosporon and the genus Geotrichum [1,2]. Various studies demonstrated that the type species of Trichosporon was of basidiomycetous af–nity, and, on the basis of differences in carbohydrate composition of the cell walls, a separation of the basidiomycetous and ascomycetous arthroconidial species as Trichosporon and Geotrichum species, respectively, was proposed [8-11].