Taxonomic Studies Of Helicosporous And Dictyosporous Hyphomycetes On Rotting Branches And Foliages From Four Provinces In China

Hyphomycetes, as an important group of mitosporic or anamorphic (asexual or imperfect) fungi, widely distribute in various environments. In this research, plant samples were collected in the different parts of our country during different climates and vegetation types. The hyphomycetes on samples were identified, described and isolated and hyphomycetes distribution was investigated for establishing a basis for further discussion on fungal taxonomy, clearing the distribution of fungal species and enriching fungal resources in our country.The plant samples were collected in provinces of Guangdong, Guangxi, Guizhou and Shandong. About 180 specimens were collected. After series of researches,37 species belong to 20 genera of hyphomycetes were discovered. Two kinds of these fungi have been characterized, including 13 species belong to 3 genera of helicosporous hyphomycetes and 24 species belong to 17 genera of dictyosporous hyphomycetes respectively. The mainly genera and species are described and illustrated morphologically. Helicoma conicodentatum and Catenularia state of Chaetosphaeria cupulifera are first reported in China.Helicosporous hyphomycetes are:Helicoma conicodentatum, Helicoma vaccinii, Helicomyces colligatus, Helicomyces hyderabadensis, Helicomyces lilliputeus, Helicomyces roseus, Helicosporium gracile, Helicosporium griseum, Helicosporium guianense, Helicosporium lumbricopsis, Helicosporium murinum, Helicosporium pallidum, Helicosporium virescens.Dictyosporous hyphomycetes are:Alternaria alternate, Bipolaris sorokiniana, Canalisporium caribensis, Catenularia state of Chaetosphaeria cupulifera,, Ceratosporium fuscescens, Cryptophiale kakombensis,Cryptophiale udagawae, Dendryphion nanum, Dictyosporium australiense, Dictyosporium elegans, Dictyosporium heptasporum, Dictyosporium subramanianii, Ellisembia adscendens, Epicoccum nigrum, Exserticlava vasiformis, Hermatomyces sphaericus, Monodictys abuensis, Monodictys castaneae, Monodictys cerebriformis, Mycoenterolobium platysporum, Tetraploa aristata, Ulocladium allii-tuberosi.All specimens are deposited in the laboratory of Microbiology department of College of Biological Science and Biotechnology, Beijing Forestry University.