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Issue: Vol. 710 No. 3: 17 Jul. 2025
Type: Article
Published: 2025-07-17
DOI: 10.11646/phytotaxa.710.3.2
Page range: 249-260
Abstract views: 369
PDF downloaded: 15

Phaeoisaria yadongensis sp. nov. (Pleurotheciaceae) from Xizang Autonomous Region, China

State Key Laboratory of Phytochemistry and Natural Medicines, Kunming Institute of Botany, Chinese Academy of Sciences, Kunming, Yunnan 650201, China; School of Science, Mae Fah Luang University, Chiang Rai 57100, Thailand; Center of Excellence in Fungal Research, Mae Fah Luang University, Chiang Rai 57100, Thailand
State Key Laboratory of Phytochemistry and Natural Medicines, Kunming Institute of Botany, Chinese Academy of Sciences, Kunming, Yunnan 650201, China; School of Science, Mae Fah Luang University, Chiang Rai 57100, Thailand; Center of Excellence in Fungal Research, Mae Fah Luang University, Chiang Rai 57100, Thailand
State Key Laboratory of Phytochemistry and Natural Medicines, Kunming Institute of Botany, Chinese Academy of Sciences, Kunming, Yunnan 650201, China; School of Science, Mae Fah Luang University, Chiang Rai 57100, Thailand; Center of Excellence in Fungal Research, Mae Fah Luang University, Chiang Rai 57100, Thailand
State Key Laboratory of Phytochemistry and Natural Medicines, Kunming Institute of Botany, Chinese Academy of Sciences, Kunming, Yunnan 650201, China
Center of Excellence in Fungal Research, Mae Fah Luang University, Chiang Rai 57100, Thailand
State Key Laboratory of Phytochemistry and Natural Medicines, Kunming Institute of Botany, Chinese Academy of Sciences, Kunming, Yunnan 650201, China
1 new taxon asexual morph phylogeny taxonomy Fungi

Abstract

A novel species, Phaeoisaria yadongensis, was isolated from a decaying wood specimen collected from Yadong, Xizang Autonomous Region, China. The species was characterized through a comprehensive evaluation of micro- and macro-morphological features and phylogenetic analyses based on a combination of ITS, LSU, and SSU sequence data. P. yadongensis is distinguished by its parallel, loosely arranged conidiophores that form indeterminate synnemata, denticulate conidiophore cells, and fusiform to ellipsoid conidia containing 1–2 guttulae. Phylogenetic analysis revealed that P. yadongensis forms a sister clade with P. clematidis. However, P. yadongensis can be differentiated from P. clematidis by the length of its indeterminate synnemata, the shape of its fusiform to ellipsoid conidia, and the presence of 1–2 guttulae in its aseptate conidia. The combined morphological and phylogenetic evidence supports the establishment of P. yadongensis as a new species within the genus Phaeoisaria.

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How to Cite

Li, Y., He, S.-C., Li, C.-J.-Y., Yu, F.-M., Luangharn, T. & Zhao, Q. (2025) Phaeoisaria yadongensis sp. nov. (Pleurotheciaceae) from Xizang Autonomous Region, China. Phytotaxa 710 (3): 249–260. https://doi.org/10.11646/phytotaxa.710.3.2