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Issue: Vol. 768 No. 3: 4 Aug. 2026
Type: Article
Published: 2026-08-04
DOI: 10.11646/phytotaxa.768.3.5
Page range: 179-193
Abstract views: 49
PDF downloaded: 0

A novel lilaceous pruinose species of Russula (Russulaceae, Russulales) from Southwest China

Guizhou Key Laboratory of Plateau Wetland Conservation and Restoration; Guizhou University of Engineering Science; Bijie 551700; China
Guangdong Provincial Key Laboratory of Microbial Culture Collection and Application; State Key Laboratory of Applied Microbiology Southern China; Guangdong Institute of Microbiology; Guangdong Academy of Sciences; Guangzhou 510070; China
Key Laboratory of Environment Change and Resources Use in Beibu Gulf; Ministry of Education & Guangxi Key Laboratory of Earth Surface Processes and Intelligent Simulation; Nanning Normal University; Nanning 530001; China
Guizhou Key Laboratory of Plateau Wetland Conservation and Restoration; Guizhou University of Engineering Science; Bijie 551700; China
Guangdong Provincial Key Laboratory of Microbial Culture Collection and Application; State Key Laboratory of Applied Microbiology Southern China; Guangdong Institute of Microbiology; Guangdong Academy of Sciences; Guangzhou 510070; China
Bijie Academy of Agricultural Sciences; Bijie 551700; China
Guangdong Provincial Key Laboratory of Microbial Culture Collection and Application; State Key Laboratory of Applied Microbiology Southern China; Guangdong Institute of Microbiology; Guangdong Academy of Sciences; Guangzhou 510070; China
molecular phylogeny, morphology, new species, subgenus Russula, taxonomy Fungi molecular phylogeny morphology new species subgenus Russula taxonomy

Abstract

Russula lilaceopruinosa (Russulaceae, Russulales) is described as a new species based on collections from the Wumeng Mountains, Southwest China. It is morphologically characterized by a distinctive lilac pruinose pileus, cream-colored lamellae, and subreticulate to reticulate basidiospores. Molecular phylogenetic analyses of a concatenated dataset (ITS, nrLSU, mtSSU, and RPB2) place the new species within the crown clade of Russula subg. Russula. Russula lilaceopruinosa forms a distinct monophyletic lineage (MLB = 100%; BPP = 1.00) in R. subsect. Auratinae, separate from the R. aurea lineage and the R. wielangtae lineage, supporting its recognition as an independent evolutionary lineage. A comprehensive description and comparisons with similar taxa are provided.

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How to Cite

Xiao, Q.-Y., Xia, W.-X., Shao, Y.-Y., Cui, X., Deng, W.-Q., Ma, J. & Li, T.-H. (2026) A novel lilaceous pruinose species of Russula (Russulaceae, Russulales) from Southwest China. Phytotaxa 768 (3): 179–193. https://doi.org/10.11646/phytotaxa.768.3.5