Four new species of Orbiliaceae from Yunnan, China

During the fungal survey in YongPing County, Dali area in southwest China, a total of 50 specimens of Orbiliaceae were collected. Among them, were four apparently uncommon taxa growing on bark and wood of decayed branches of undetermined broad-leaved trees lying on the moist ground. They are described here as new species: Orbilia acicularis sp. nov., O. arcospora sp. nov., O. limoniformis sp. nov., and Hyalorbilia nodulosa sp. nov. Orbilia acicularis is characterized by needle-shaped straight ascospores, O. arcospora by spores being curved like an arch, O. limoniformis according to its lemon-shaped spores, and Hyalorbilia nodulosa by the knob-like glassy processes on the marginal excipular cells, the three Orbilia species also by filiform to subulate spore bodies (SBs) in the living spores.