Abstract
Vamsapriya yinggelingensis sp. nov. (Vamsapriyaceae) is described and illustrated from two specimens collected on bamboo in Hainan Province, China, based on detailed morphological examination and multi-locus phylogenetic analyses. Phylogenetically, it forms a distinct clade sister to V. sichuanensis and V. zhaotongensis. Morphologically, the new species is distinguished from V. sichuanensis by its larger ascomata (647–808 µm diam. vs. 350–500 µm diam.), and from V. zhaotongensis by the presence of a mucilaginous sheath around ascospores and smaller asci (99–161 × 6–10 µm vs. 125–180 × 8–14.5 µm). Nucleotide sequence comparisons with the type strains of V. sichuanensis (HKAS 130304) and V. zhaotongensis (GMB6401) showed divergences of 4.2% (ITS), 1.9% (LSU), and 2.2% (rpb2) from V. sichuanensis, and 4.6% (ITS), 2.0% (LSU), 2.2% (rpb2), and 5.1% (tub2) from V. zhaotongensis. Detailed morphological descriptions, illustrations, a phylogenetic tree showing the placement of the new taxon, and a comparative table of all Vamsapriya species known from sexual morphs are provided.
References
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