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Issue: Vol. 721 No. 3: 8 Oct. 2025
Type: Article
Published: 2025-10-08
DOI: 10.11646/phytotaxa.721.3.4
Page range: 241-252
Abstract views: 247
PDF downloaded: 5

Phaeobotryon ormosiae (Botryosphaeriaceae, Botryosphaeriales), a new species from Ormosia semicastrata in Guizhou Province, China

The Key Laboratory for Silviculture and Conservation of the Ministry of Education, Beijing Forestry University, Beijing 100083, People’s Republic of China
The Key Laboratory for Silviculture and Conservation of the Ministry of Education, Beijing Forestry University, Beijing 100083, People’s Republic of China
The Key Laboratory of Biodiversity Conservation of National Forestry and Grassland Administration, Ecology and Nature Conservation Institute, Chinese Academy of Forestry, Beijing 100091, People’s Republic of China
The Key Laboratory for Silviculture and Conservation of the Ministry of Education, Beijing Forestry University, Beijing 100083, People’s Republic of China
Ascomycota molecular phylogeny morphology taxonomy Fungi

Abstract

Phaeobotryon is a widely distributed fungal genus commonly associated with woody stems, playing important ecological roles in forest ecosystems. During an investigation of tree trunk diseases in Guizhou Province, China, we isolated three strains of this genus from Ormosia semicastrata. Based on integrated morphological and phylogenetic analysis (using ITS, tef1-α, and LSU gene loci), a novel species, Phaeobotryon ormosiae sp. nov., is described and illustrated. The phylogenetic analysis revealed that P. ormosiae sp. nov. forms a well-supported clade (ML/BI= 99/0.99) distinct from other known Phaeobotryon species (sequence differences of 0.86% in ITS, 0.37% in LSU, 4.50% in tef1-α). This study provides a comprehensive taxonomic characterization, including detailed morphological descriptions, high-resolution microscopic illustrations, and molecular sequence data deposited in public databases. Our findings expand the known species diversity of the genus Phaeobotryon.

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How to Cite

Wu, Y., Li, S., Jiang, N. & Tian, C. (2025) Phaeobotryon ormosiae (Botryosphaeriaceae, Botryosphaeriales), a new species from Ormosia semicastrata in Guizhou Province, China. Phytotaxa 721 (3): 241–252. https://doi.org/10.11646/phytotaxa.721.3.4