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Issue: Vol. 455 No. 2: 10 August 2020
Type: Article
Published: 2020-08-10
DOI: 10.11646/phytotaxa.455.2.1
Page range: 61–69
Abstract views: 24
PDF downloaded: 32

Lepiota condylospora, a new species with nodulose spores in section Lilaceae from northern Thailand

Center of Excellence in Fungal Research, Mae Fah Luang University, Chiang Rai 57100, Thailand. School of Science, Mae Fah Luang University, Chiang Rai 57100, Thailand. Ecology Division, Biotechnology and Ecology Institute, Ministry of Science and Technology, P.O.Box: 2279, Vientiane Capital, Laos.
Center of Excellence in Fungal Research, Mae Fah Luang University, Chiang Rai 57100, Thailand. School of Science, Mae Fah Luang University, Chiang Rai 57100, Thailand.
Key Laboratory for Plant Diversity and Biogeography of East Asia, Kunming Institute of Botany, Chinese Academy of Sciences, Kunming 65201, China. Centre for Mountain Futures, Kunming Institute of Botany, Chinese Academy of Sciences, Kunming 650201, China.
Key Laboratory for Plant Diversity and Biogeography of East Asia, Kunming Institute of Botany, Chinese Academy of Sciences, Kunming 65201, China. Centre for Mountain Futures, Kunming Institute of Botany, Chinese Academy of Sciences, Kunming 650201, China.
School of Science, Mae Fah Luang University, Chiang Rai 57100, Thailand. Institute of Plant Health, Zhongkai University of Agriculture and Engineering, Haizhu Campus, Guangzhou 510225, China.
Department of Plant and Microbial Biology, University of California at Berkeley, Berkeley, CA 94720–3102, USA.
Agaricaceae hymeniderm lepiotaceous fungi phylogeny taxonomy Fungi

Abstract

During our studies of the genus Lepiota in northern Thailand we collected a putatively new species with a distinct morphology and ITS nrDNA profile from Chiang Mai Province. The new species, Lepiota condylospora, is characterized by the presence of reddish brown to brownish orange or brown squamules on the pileus surface, triangular basidiospores with two lateral knobs, and a hymenidermal pileipellis composed of broadly to narrowly clavate elements. Two genetically distinct species of Lepiota section Lilaceae having triangular spores with two lateral knobs are compared with L. condylospora: Lepiota fraterna, from Papua New Guinea, differs in having larger basidiospores and cheilocystidia; while L. cristata var. macrospora, from China, has bigger basidiomata. A full description, color photographs, line drawings and a phylogenetic tree to show the position of the new species are provided.