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Issue: Vol. 664 No. 3: 10 Sept. 2024
Type: Article
Published: 2024-09-10
DOI: 10.11646/phytotaxa.664.3.3
Page range: 181-190
Abstract views: 58
PDF downloaded: 1

Phylogeny and taxonomic revision of Hygrophorus robustus (Hygrophoraceae, Agaricales) from southwestern China

School of Pharmaceutical Sciences and Yunnan Key Laboratory of Pharmacology for Natural Products, Kunming Medical University, Kunming, 650500, China. Yunnan College of Modern Biomedical Industry, Kunming Medical University, Kunming, 650500, China. Lishui University, Lishui, 323000, China.
Germplasm Bank of Wild Species & Yunnan Key Laboratory for Fungal Diversity and Green Development, Kunming Institute of Botany, Chinese Academy of Sciences, Kunming, 650201, China
School of Pharmaceutical Sciences and Yunnan Key Laboratory of Pharmacology for Natural Products, Kunming Medical University, Kunming, 650500, China. Yunnan College of Modern Biomedical Industry, Kunming Medical University, Kunming, 650500, China.
Germplasm Bank of Wild Species & Yunnan Key Laboratory for Fungal Diversity and Green Development, Kunming Institute of Botany, Chinese Academy of Sciences, Kunming, 650201, China
School of Pharmaceutical Sciences and Yunnan Key Laboratory of Pharmacology for Natural Products, Kunming Medical University, Kunming, 650500, China. Yunnan College of Modern Biomedical Industry, Kunming Medical University, Kunming, 650500, China.
Basidiomycota Tricholomataceae Tricholoma molecular phylogeny Fungi

Abstract

Hygrophorus robustus was originally described from Yunnan province, China. This taxon is characterized by its robust basidiomata, salmon buff lamellae, tapered toward the base of the stipe, the odor of Tricholoma matsutake, the absence of cystidia and clamp connections, and a symbiotic association with Castanopsis delavayi. In this study, the phylogenetic position of this taxon is inferred by molecular phylogenetic analysis based on DNA sequences of internal transcribed spacer (ITS). The ITS result showed that it is nested within the genus Tricholoma and is affiliated with the North American T. grave. The morphological anatomy of this species also shows that its characteristics fit the concept of the genus Tricholoma, such as regular lamellar trama. Thus, H. robustus should be taxonomically transferred to Tricholoma, and the name of the new combination should be T. robustum. However, this name was used in the genus as Tricholoma robustum (Alb. & Schwein.) Ricken. Thus, we propose a new name T. aurantiophyllum for H. robustus.

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