Paraniesslia tuberculata gen. et sp. nov., and new records or species of Clypeosphaeria, Leptosphaeria and Astrosphaeriella in Hong Kong freshwater habitats

Paraniesslia tuberculata gen. et sp. nov., Clypeosphaeria uniseptata sp. nov. and Leptosphaeria ginimia sp. nov. are described and illustrated from wood submerged in freshwater habitats in Hong Kong, while Astrosphaeriella stellata is reported as a new record from a river in Hong Kong. Paraniesslia tuberculata has characteristic features of the Niessliaceae, but is unique in producing greenish-brown ascospores with tuberculate ornamentation.