Pseudomonodictys aquatica sp. nov., the sexual morph of Pseudomonodictys from freshwater habitats

Pseudomonodictys aquatica was found on a submerged decaying wood from freshwater habitat in Chiang Rai Province, Thailand. Based on phylogenetic analyses of combined ITS, LSU, SSU and TEF1-alpha sequence data, Pseudomonodictys aquatica is introduced as a new species and it is the first report of sexual morph in this genus. Pseudomonodictys aquatica is characterized by semi-immersed to immersed, globose to subglobose ascomata, clavate, short pedicellate asci and fusiform to cylindrical, (6)-8-septate, hyaline ascospores that are enlarged at the 4th-middle cells and surrounded by a mucilaginous sheath. Morphological characters of the species are compared with the similar taxa in Parabambusicolaceae. The detailed description and illustration of the new species are provided.