A taxonomic study of Rhodosporidium capitatum

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Abstract
Several strains of Rhodosporidium capitatum Fell, Hunter and Tallman, thought to be an obligate marine yeast, have been isolated from terrestrial leaf litter and from sand of a river, a brackish lake, and a seashore. Some unknown features of the life history have been elucidated in our study. Septal ultrastructure in R. capitatum was found to be similar to that of species of Tilletia, Filobasidium, and Filobasidiella; it is a primitive type of dolipore rather than the simple pore found in other species of Rhodosporidium. Septal ultrastructure appears to be correlated with promycelial type and physiological characteristics. Rhodosporidium is concluded to be a heterogenous taxon and taxonomic changes are needed.

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