Neogymnomyces, a new genus of the Gymnoascaceae

Abstract

Four strains of Gymnoascus demonbreunii have been studied on various media at room temperature and at 37 °C. Ascocarps were produced on most media and naked mature asci on some media. No growth was demonstrated by any of the strains at 37 °C. Spore suspensions of the various strains were injected intraperitoneally into mice; most of the strains were recovered, but no lesions or other abnormalities were observed in any tissues.G. demonbreunii is shown to have no taxonomic relationship with Histoplasma capsulatum and is not the sexual state of that fungus. Comparisons of G. demonbreunii with species of Gymnoascus revealed significant morphological differences that require the inclusion of G. demonbreunii in a new genus, Neogymnomyces.