Three new hyphomycetes isolated from soil and feather debris

摘要

Two hyphomycetous fungi isolated from soil in Japan and Nepal are described and assigned to a monotypic new genus,Conjunctospora, and to a new species ofOidiodendron. Conjunctospora vesiculiferais characterized byAspergillus-like vesiculate conidiophores, a layer of ovoid conidiogenous cells, and brown meristem conidia.Oidiodendron hughesiiis characterized by the development of the terminal part of conidiophores into a reticulate network of dark, thick-walled hyphae with appendage-like spines and a pale-coloured arthroconidial mass. This fungus is a psychrophile.Spirosphaera keratinophila, isolated from a fallen crow feather in Japan, is also described as a third new hyphomycete. This fungus is keratinolytic and characterized by hyaline to pale yellow clathroconidia.Key words: Hyphomycetes, systematics,Conjunctospora, Oidiodendron, Spirosphaera.