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Issue: Vol. 715 No. 3: 22 Aug. 2025
Type: Article
Published: 2025-08-22
DOI: 10.11646/phytotaxa.715.3.3
Page range: 229-244
Abstract views: 403
PDF downloaded: 13

A new species of Hypoxylon (Hypoxylaceae, Xylariales) from Sichuan Province, China

School of Life Science and Technology, Center for Informational Biology, University of Electronic Science and Technology of China, Chengdu 611731, P.R. China
School of Life Science and Technology, Center for Informational Biology, University of Electronic Science and Technology of China, Chengdu 611731, P.R. China
Department of Entomology and Plant Pathology, Faculty of Agriculture, Chiang Mai University, Chiang Mai, Thailand
School of Life Science and Technology, Center for Informational Biology, University of Electronic Science and Technology of China, Chengdu 611731, P.R. China
School of Life Science and Technology, Center for Informational Biology, University of Electronic Science and Technology of China, Chengdu 611731, P.R. China
1 new species fungal taxonomy multi-gene phylogeny Sordariomycetes Fungi

Abstract

Hypoxylaceous fungi commonly occur as saprophytes and endophytes, playing important roles in nutrient cycling and biological interactions within forest ecosystems. In this study, we describe Hypoxylon omphalostiolatum, a novel species isolated from a decaying branch of an unidentified plant in Sichuan Province, China, based on morphological characteristics and multi-locus phylogenetic analysis. The phylogenetic analysis using sequence data from the internal transcribed spacer (ITS), large subunit ribosomal RNA (LSU), the second-largest subunit of RNA polymerase II (rpb2), and beta-tubulin (tub2) revealed that our isolates form a distinct clade closely related to H. guiyangense and H. guizhouense. Hypoxylon omphalostiolatum differs from those species by having dark brown stromata, larger perithecia, inconspicuous and umbilicate ostioles, and longer asci. This study contributes to the understanding of Hypoxylon diversity and highlights the importance of polyphasic taxonomy in fungal classification.

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How to Cite

Ding, P.-C., Madhushan, A., Samarakoon, M.C., Liu, J.-K. & Maharachchikumbura, S.S. (2025) A new species of Hypoxylon (Hypoxylaceae, Xylariales) from Sichuan Province, China. Phytotaxa 715 (3): 229–244. https://doi.org/10.11646/phytotaxa.715.3.3