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Issue: Vol. 752 No. 2: 22 Apr. 2026
Type: Article
Published: 2026-04-22
DOI: 10.11646/phytotaxa.752.2.4
Page range: 137-149
Abstract views: 0
PDF downloaded: 0

A novel species of Hyalorbilia (Orbiliaceae, Orbiliales) from Thailand

Key Laboratory of Phytochemistry and Natural Medicines, Kunming Institute of Botany, Chinese Academy of Sciences, Kunming 650201, Yunnan Province, People’s Republic of China; Center of Excellence in Fungal Research, Mae Fah Luang University, Chiang Rai 57100, Thailand
Center of Excellence in Fungal Research, Mae Fah Luang University, Chiang Rai 57100, Thailand
Key Laboratory of Phytochemistry and Natural Medicines, Kunming Institute of Botany, Chinese Academy of Sciences, Kunming 650201, Yunnan Province, People’s Republic of China
Key Laboratory of Phytochemistry and Natural Medicines, Kunming Institute of Botany, Chinese Academy of Sciences, Kunming 650201, Yunnan Province, People’s Republic of China; Center of Excellence in Fungal Research, Mae Fah Luang University, Chiang Rai 57100, Thailand
Key Laboratory of Phytochemistry and Natural Medicines, Kunming Institute of Botany, Chinese Academy of Sciences, Kunming 650201, Yunnan Province, People’s Republic of China; Center of Excellence in Fungal Research, Mae Fah Luang University, Chiang Rai 57100, Thailand
Key Laboratory of Phytochemistry and Natural Medicines, Kunming Institute of Botany, Chinese Academy of Sciences, Kunming 650201, Yunnan Province, People’s Republic of China
1 new species morphology Orbiliomycetes phylogeny taxonomy Fungi

Abstract

Hyalorbilia, a genus in the family Orbiliaceae (Orbiliales), currently accommodates 45 species, including three recorded from Thailand: H. arcuata Baral, M.L. Wu & Y.C. Su, H. erythrostigma (W. Phillips) Baral & G. Marson, and H. inflatula (P. Karst.) Baral & G. Marson. This study reports a new Hyalorbilia species from Thailand, identified on the basis of both morphological characteristics and multi-locus phylogenetic analyses. Our new species, Hyalorbilia chiangmaiensis, is distinguished from other Hyalorbilia species by its strongly curved, sickle-shaped ascospores in the living state, and less strongly curved, spindle- to rod-shaped, aseptate ascospores in the dead state, with shrunken ends that are never distinctly helicoidal. The present study provides a detailed description, illustrations, and a comparison to the closely associated species in this genus.

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How to Cite

Yuan, L., Chethana, K.T., Thiyagaraja, V., Luo, L., Hyde, K.D. & Zhao, Q. (2026) A novel species of Hyalorbilia (Orbiliaceae, Orbiliales) from Thailand. Phytotaxa 752 (2): 137–149. https://doi.org/10.11646/phytotaxa.752.2.4