Two new species of Xenosporium (Hyphomycetes) lacking secondary conidia
Zhao, G.Z. Wu
Two previously unknown hyphomycetes, assignable to the genus Xenosporium, are reported from China. Xenosporium helicominum, found on decaying wood, and X. tibetanum, found on bamboo, produce conidia characteristic of the genus, but lack the secondary conidia found in most species. The genus Xenosporium was divided into two morphological groups based in the curvature of the conidia. A third group is now needed to accommodate species lacking secondary conidia. This group includes X. latisporum, X. helicominum, X. tibetanum, and X. ovatum. The diagnostic characters of these four species are provided. Type specimens for the two new species are deposited in Wu's mycological herbarium in Novozymes China and the Mycological Herbarium, Institute of Microbiology, Academia Sinica, Beijing (HMAS), respectively.