Radiomyces, a New Genus in the Mucorales

E mbree , R obert W. (U. California, Berkeley.) Radiomyces, a new genus in the Mucorales. Amer. Jour. Bot. 46(1): 25‐30. Illus. 1959.— Radiomyces spectabilis is described as a new genus and species in the order Mucorales of the Phycomycetes. This fungus readily grows in pure culture, and developmental stages of the asexual and sexual reproductive structures are described. The genus is referred to the family Thamnidiaceae, and in doing so, the family concept is necessarily broadened to include almost colorless, smooth‐walled zygospores with appendiculate suspensors.