Morphology, multilocus phylogeny, and toxin analysis reveal two new species of Amanita section Amanita (Amanitaceae) from China

2025/06/09 by Yu-Ting Su, Fei Xu, Ping Zhang +3 · 1 voice
Agricultural and Biological Sciences · Medicine · #Mycorrhizal Fungi and Plant Interactions #Silymarin and Mushroom Poisoning #Fungal Biology and Applications

paper · pdf · doi:10.3897/mycokeys.118.141080

openalex publication_date 2025/06/09 · openalex created_date 2025/06/10 · openalex updated_date 2026/07/22

Abstract

Globally, many species of Amanita sect. Amanita (Amanitaceae, Agaricales) cause poisoning after consumption. Amanita flavomelleiceps sp. nov. and Amanita parvisychnopyramis sp. nov. , two new species of A. section Amanita from China, are described here. Morphology and molecular phylogenetic analyses based on five genes (ITS, nrLSU, RPB2 , TEF1-α , and TUB2 ) revealed these two taxa as distinct species. Amanita flavomelleiceps sp. nov. is characterized by a yellowish-to-yellow pileus covered by verrucose volval remnants; a subglobose basal bulb with shortly limbate; subglobose to broadly ellipsoid, inamyloid basidiospores. Amanita parvisychnopyramis sp. nov. is characterized by a brownish pileus covered by subconical volval remnants; an ovate basal bulb with a cream limbate; and subglobose-to-broadly ellipsoid, inamyloid basidiospores. Screening for the most notorious toxins by liquid chromatography tandem mass spectrometry (LC-MS/MS) revealed the presence of ibotenic acid (IBO) and muscimol (MUS) in A. parvisychnopyramis and the absence of these toxins in A. flavomelleiceps .

Citations

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• MrBayes 3.2: Efficient Bayesian Phylogenetic Inference and Model Choice Across a Large Model Space
• A Beauveria phylogeny inferred from nuclear ITS and EF1-  sequences: evidence for cryptic diversification and links to Cordyceps teleomorphs

Discussions

• Morphology, multilocus phylogeny, and toxin analysis have revealed two new species of Amanita section Amanita from China. 🔗 doi.org/10.3897/myco... [bsky, 2 points, 0 comments]

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