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Updated: Feb 4, 2026

Laser Microdissection for Species-Agnostic Single-Tissue Applications
Published on: March 31, 2022
A new section and species of AgaricussubgenusPseudochitonia from Thailand
Mao-Qiang He1,2,3, Boontiya Chuankid3, Kevin D Hyde3
1Department of Entomology and Plant Pathology, Faculty of Agriculture, Chiang Mai University, Chiang Mai, 50200, Thailand Institute of Microbiology, Chinese Academy of Sciences Beijing China.
Abstract:
A large species diversity has recently been discovered in the genus Agaricus. Six subgenera and 23 sections are now recognised. In this study, three specimens collected from Thailand, formed a monophyletic clade in subgenus Pseudochitonia, based on analyses of ITS sequence data. Further analyses, based on multi-gene sequence data (ITS, LSU, tef1-α), using BEAST, revealed that this clade originated 26.7 Ma. According to their distinct morphological characteristics, phylogenetic position and relatively old divergence time, a new section Cymbiformes is proposed and this section is represented by a new species A.angusticystidiatus. This new section is characterised by the strong iodoform odour of basidiomes and cymbiform basidiospores. Descriptions, colour photographs and illustrations are presented.
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