SUMMARYThree genera of the Gymnoascaceae are described and discussed.Gymnascella, a genus generally ignored since it was established, includes three species transferred fromArachniotus: G. aurantiaca, G. citrina, andG. kamyschkoi. Arachniotusis considered a monotypic genus withA. Candidus. Pseudoarchniotusis clarified and broadened with some species transferred fromArachniotusand it includes:P. desertorum, P. flavoluteus, P. roseus, P. ruber, andP. trochleosporus.Numerous other species were examined and excluded fromArachniotusandPseudoarachniotus.