Background: Pleosporales is the largest order of Dothideomycetes. In recent years, systematics of Pleosporales have undergone considerable revisions. Dictyosporiaceae is one of the newly established families within this order proposed to accommodate holomorphic saprobic Dothideomycetes. Currently 18 genera are recognised in Dictyosporiaceae.
New information: The new species, Jalapriyaaquaticum sp. nov. and J.apicalivaginatum sp. nov. were collected from freshwater habitats in Gansu and Yunnan Provinces, China, respectively and are introduced, based on morphology and molecular analysis of combined ITS, LSU, SSU and TEF1-α sequence data. We also recovered one fresh collection of Dictyocheirosporavinaya D'souza, Bhat & K.D. Hyde, which is a new record for China. Jalapriyaaquaticum differs from extant species of Jalapriya in rows converging at the apex and apical cells with spherical-like appendages. Jalapriyaapicalivaginatum differs from extant species of Jalapriya in having the rows of conidia mostly arranged in a plane. The phylogenetic analysis place the new collections within Dictyosporiaceae (Pleosporales). Descriptions and illustrations of Jalapriyaaquaticum, J.apicalivaginatum and Dictyocheirosporavinaya are provided. A synopsis of characters of species of Jalapriya is also provided.
Keywords: Dictyosporiaceae; asexual morphs; freshwater fungi; phylogeny; taxonomy.
Xi Fu, Dan-Feng Bao, Zong-Long Luo, Xiu He, Hong-Yan Su.