Among 120 monoascospore isolates of G. roseum forma cerealis (G. zeae), 8 from a single ascus differed from all others that were alike. The 8 cultures were white, produced macro-conidia in abundance, and developed mature perithecia on PDA after 4 weeks'' incubation. The perithecium from which the 8 white cultures were derived was situated among others from which normal pigmented cultures were isolated. It was indistinguishable in size, shape and color from other perithecia. The size, shape, and color of the ascus, the size, shape, color and number of septations of ascospores were not noticeably different from those from which isolates of G. roseum forma cerealis were obtained. Pathogenicity of the white cultures on corn seedling and corn ears was equal to that of the pigmented form. The white isolates appear not to be simple cultural variants, but are probably what was classified by Wollenweber as G. acuminata Wr.