Helicosporous hyphomycetes from china

Morphological studies of anamorphic taxa with helicospores (helicosporous fungi) were carried out based on observation of specimens collected in China and comparisons with descriptions in the literature. After examination of more than 300 freshly collected specimens and 100 herbarium specimens, we conclude that 71 species in 14 genera are presently known in mainland China, including 9 new species and 2 new combinations. The new species are Helicomyces denticulatus G.Z. Zhao, Xing Z. Liu & W.P. Wu; Helicosporium dentophorum G.Z. Zhao, Xing Z. Liu & W.P. Wu; Helicosporium sympodiophorum G.Z. Zhao, Xing Z. Liu & W.P. Wu; Helicoma hainanense G.Z. Zhao, Xing Z. Liu & W.P. Wu; Helicoma hyalonema G.Z. Zhao, Xing Z. Liu & W.P. Wu; Helicoma latifilum G.Z. Zhao, Xing Z. Liu & W.P. Wu; Helicoma scarabaeiforme G.Z. Zhao; Xenosporium latisporum G.Z. Zhao, Xing Z. Liu & W.P. Wu; Xenosporium ovtum G.Z. Zhao, Xing Z. Liu & W.P. Wu. The new combinations are Helicoma fumosum (P. Karst.) G.Z. Zhao, Xing Z. Liu & W.P. Wu; Helicofilia irregularis (P.M. Kirk) G.Z. Zhao Xing Z. Liu & W.P. Wu. Another three new combinations, Helicoma casuarinae (Matsush.) G.Z. Zhao, Xing Z. Liu & W.P. Wu, Helicoma hyalospora (Rao & D. Rao) G.Z. Zhao, X.Z. Liu & W.P. Wu and Slimacomyces isiola (R.T. Moore) G. Z. Zhao, and a new name, Helicoma palmarum G.Z. Zhao, Xing Z. Liu & W.P. Wu are introduced based on the literature. All species are described, illustrated and discussed. Diagnostic characteristics and keys for most helicosporous genera are provided. Drepanospora is considered to be synonym of Helicosporium and Troposporella and Helicosporina are dealt with as the synonyms of Helicoma. A third group of Xenosporium without secondary conidia was found and four new species are described in this group. Several specimens were unavailable for study and are listed as doubtful records.