Morphological and phylogenetic analyses reveal three new species and one new record of Tubeufia (Tubeufiales, Tubeufiaceae) from southern China.

During an investigation of helicosporous fungi in China, a total of seven helicosporous hyphomycetes were obtained from decaying wood in the southern region of the country. Based on phylogenetic analyses using a combined LSU, ITS, tef1α , and rpb2 sequence matrix, in conjunction with morphological comparisons, these taxa were classified within Tubeufia (Tubeufiaceae, Tubeufiales) and were recognized as three new species, viz. Tubeufiaguttulata , T.hainanensis , and T.muriformis , as well as one new distribution record, viz. T.cocois . Evidence for these new taxa and the new record, descriptions, illustrations, notes, and phylogenetic evidence are provided for the newly collected helicosporous species.