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Issue: Vol. 403 No. 2: 10 May 2019
Type: Article
Published: 2019-05-10
DOI: 10.11646/phytotaxa.403.2.4
Page range: 111–121
Abstract views: 34
PDF downloaded: 1

Two novel species of Marasmius (Marasmiaceae, Agaricales) from lower northern Thailand

Microbiology Program, Faculty of Science and Technology, Pibulsongkram Rajabhat University, Phitsanulok, 65000, Thailand
Department of Biology, Faculty of Science, Chiang Mai University, 50200, Thailand Center of Excellence in Microbial Diversity and Sustainable Utilization, Chiang Mai University, Chiang Mai 50200, Thailand
Department of Biology, Faculty of Science, Chiang Mai University, 50200, Thailand Center of Excellence in Microbial Diversity and Sustainable Utilization, Chiang Mai University, Chiang Mai 50200, Thailand
Department of Biology, Faculty of Science, Chiang Mai University, 50200, Thailand Center of Excellence in Microbial Diversity and Sustainable Utilization, Chiang Mai University, Chiang Mai 50200, Thailand Academy of Science, Thai Royal Society of Thailand, Bangkok 10300, Thailand
Fungi Euagarics ITS Phylogeny Sicci Southeast Asia

Abstract

Two new species of Marasmius secton Sicci are described based on field work conducted in Phu Hin Rong Kla National Park, Thailand. Marasmius thailandicus is characterized by small, thin yellowish white basidiomes, ellipsoid basidiospores and dimorphic caulocystidia. Marasmius rongklaensis is distinguished by a conical, velutinous pileus, ellipsoid basidiospores, dimorphic cheilocytidia and pileipellis a hymeniderm with pileosetae. Comprehensive description along with illustrations, photographs, and a comparison with phenetically similar taxa are provided. The taxonomic position has been confirmed by phylogenetic analyses of the internal transcribed spacer (ITS1-5.8S-ITS2) sequences of the ribosomal DNA.