Two novel hyphomycetes associated with ferns from China.

During an ongoing investigation of fungi associated with ferns in southwestern China, three hyphomycetes were discovered on the dead rachises of Angiopterisfokiensis and an unidentified fern. Based on morphology and multi-gene phylogenetic analyses, Arthrobotrysangiopteridis and Corynesporaseptata are introduced as new species. Arthrobotrysangiopteridis is a nematode-trapping fungus characterized by macronematous, mononematous, hyaline conidiophores, conidiogenous cells with polyblastic denticles at each node, and 0-1-septate, clavate to elongate pyriform, hyaline conidia. Corynesporaseptata features macronematous, mononematous, pale brown to dark brown conidiophores, integrated, monotretic conidiogenous cells and up to 7-distoseptate with one true septum, subcylindrical to obclavate, hyaline to pale brown conidia. Detailed descriptions and illustrations of these two new species are provided, along with morphological comparisons of the new taxa with closely related species.