Saprobic dematiaceous hyphomycetes from Shennongjia region, China

31 dematiaceous hyphomycetes belonging to 18 genera are reported from Shennongjia region, China. Among them, 2 new species are described and illustrated. Acrodictys oblonga sp. nov. is characterized by percurrently proliferating conidiophores, lageniform to doliiform conidiogenous cells and ellipsoidal to oblong, muriform conidia. Tetraploa opaca sp. nov. is characterized by ovate or obpyriform conidia, usually composed of three columns of cells with long and hard setiform appendages. Six genera; Bactrodesmium, Cordana, Cryptocoryneum, Matsushimaea, Phaeoisariopsis and Trichocladium, and 12 species; Acrodictys atroapicula, A. septosporioides, Bactrodesmium atrum, B. pallidum, Cheiromoniliophora gracilis var. hispanica, Cordana pauciseptata, Crytocoryneum condensation, Dictyosporium toruloides, D. triseriale, Malsushimaea fasciculate, Phaeoisariopsis pubescens and Trichocladium opacum, are new records for China. The new taxa are described and illustrated, and compared with similar species.