Morphological Variety in and Introduction of Six Novel Species.

is one of the sporidesmium-like taxa with great variation in asexual morphology and delineation of species. Phylogenetic analyses of four gene regions LSU, ITS, , and revealed the placement of several sporidesmium-like species in (, , ), collected on submerged decaying twigs from streams in China and Thailand. Based on morphological examination and molecular DNA data, six new species, , , , , , and , are proposed. Among them,   is the first sexual morph confirmed in the genus. A new geographical record is reported for in China. Conidial length proved to be of less taxonomic significance for some species, whereas the type of conidial septa is informative at species level.