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Issue: Vol. 750 No. 1: 31 Mar. 2026
Type: Article
Published: 2026-03-31
DOI: 10.11646/phytotaxa.750.1.1
Page range: 1-23
Abstract views: 0
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Morpho-molecular characterization reveals a novel macrofungus, Helvella griseofuscostipitata (Helvellaceae, Pezizales), from southwest China

Key Laboratory of Forest Disaster Warning and Control in Universities of Yunnan Province, Southwest Forestry University, Kunming 650224, P.R. China; College of Forestry, Southwest Forestry University, Kunming 650224, P.R. China
Key Laboratory of Forest Disaster Warning and Control in Universities of Yunnan Province, Southwest Forestry University, Kunming 650224, P.R. China; College of Forestry, Southwest Forestry University, Kunming 650224, P.R. China
Key Laboratory of Forest Disaster Warning and Control in Universities of Yunnan Province, Southwest Forestry University, Kunming 650224, P.R. China; College of Forestry, Southwest Forestry University, Kunming 650224, P.R. China
Key Laboratory of Forest Disaster Warning and Control in Universities of Yunnan Province, Southwest Forestry University, Kunming 650224, P.R. China; College of Forestry, Southwest Forestry University, Kunming 650224, P.R. China
Key Laboratory of Edible Fungi Resources Innovation Utilization and Cultivation, College of Agronomy and Life Sciences, Zhaotong University 657000, P.R. China
Key Laboratory of Forest Disaster Warning and Control in Universities of Yunnan Province, Southwest Forestry University, Kunming 650224, P.R. China; College of Forestry, Southwest Forestry University, Kunming 650224, P.R. China; Department Microbial Drugs (MWIS), Helmholtz-Centre for Infection Research, 38124 Braunschweig, Germany
1 new species Ascomycota macrofungi morphology phylogeny Fungi

Abstract

Helvella is the most specious and morphologically prominent genus in Helvellaceae (Pezizales, Pezizomycetes). In our investigations of macroscopic ascomycetes in southwestern China, a novel species H. griseofuscostipitata is discovered on the ground covered with fallen pine-needles in a forest farm. Helvella species are characterized by white, cream, grey to black, saddle- or cup-shaped, or irregularly lobed apothecia attached to distinct terete stipes with or without longitudinal ribs, ellipsoid or subfusoid ascospores with a large central oil drop. The key morphology of our species consistent with the generic concept of Helvella. However, it can be differentiated from its phylogenetically close relatives (H. orentitomentosa, H. suborentitomentosa, and H. kunmingensis) by having mostly bi- to tri-lobate mature apothecia, yellowish gray to brownish gray fresh hymenia, subpubescent stipes (gray to dark brownish gray), an ectal excipulum with both textura globulosa and textura angularis cells, and finely verrucose younger ascospores. The placement of H. griseofuscostipitata as a distinct species, is confirmed based on macro- and micro- morphological characterization and multi-locus phylogeny of a concatenated ITS-LSU-hsp90 sequence dataset in Helvellaceae, with maximum likelihood and Bayesian inference analyses. The detailed morphological illustrations, comprehensive morphological description including the phylogenetic relationships of other Helvella species also provided.

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How to Cite

Wijesinghe, S.N., Yang, X., Chen, M., Deng, Y., Yang, S. & Zhao, C. (2026) Morpho-molecular characterization reveals a novel macrofungus, Helvella griseofuscostipitata (Helvellaceae, Pezizales), from southwest China. Phytotaxa 750 (1): 1–23. https://doi.org/10.11646/phytotaxa.750.1.1