Molliardiomyces, a new genus of the Hyphomycetes, is described for anamorphic states of some species of the Sarcoscyphaceae (Pezizales, Sarcoscyphineae): Sarcoscypha coccinea, S. occidentalis, Phillipsia domingensis, P. guatemalensis, P. lutea, Pithya cupressina, and Nanoscypha tetraspora. Conidiophores are erect to repent or submerged, monenematous, smooth, hyaline, and irregularly branched or unbranched. Conidia are produced blastically from sympodially proliferating conidiogenous cells. The conidia are smooth, one celled, hyaline or pale yellow, subglobose, ellipsoidal or obovate, with granular contents or containing small oil drops, with bases truncate or rounded, and with or without a frill. Nutritional requirements for production of conidia varied markedly from species to species. Germination of the conidia has not been observed.