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Issue: Vol. 401 No. 3: 15 April 2019
Type: Article
Published: 2019-04-15
DOI: 10.11646/phytotaxa.401.3.2
Page range: 166–178
Abstract views: 43
PDF downloaded: 1

Rhytidhysteron mangrovei (Hysteriaceae), a new species from mangroves in Phetchaburi Province, Thailand

1 Department of Entomology and Plant Pathology, Faculty of Agriculture, Chiang Mai University, Huay Keaw Road, Suthep, Muang District, Chiang Mai 50200, Thailand 2 Center of Excellence in Fungal Research, Mae Fah Luang University, Chiang Rai 57100, Thailand
Department of Entomology and Plant Pathology, Faculty of Agriculture, Chiang Mai University, Huay Keaw Road, Suthep, Muang District, Chiang Mai 50200, Thailand
6 Industrial Science and Management International Program, Faculty of Science and Technology, Thammasat University (Rangsit Center), Klong Luang, Pathumthani 12121, Thailand
Department of Entomology and Plant Pathology, Faculty of Agriculture, Chiang Mai University, Huay Keaw Road, Suthep, Muang District, Chiang Mai 50200, Thailand
Center of Excellence in Fungal Research, Mae Fah Luang University, Chiang Rai 57100, Thailand Institute of Plant and Environment Protection, Beijing Academy of Agriculture and Forestry Sciences, Beijing 100097, People’s Republic of China
Center of Excellence in Fungal Research, 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 Science, Kunming 650201, Yunnan, People’s Republic of China
Department of Health Sciences, Faculty of Science, University of Mauritius, Reduit, Mauritius
Department of Entomology and Plant Pathology, Faculty of Agriculture, Chiang Mai University, Huay Keaw Road, Suthep, Muang District, Chiang Mai 50200, Thailand Center of Excellence in Fungal Research, 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 Science, Kunming 650201, Yunnan, People’s Republic of China
1 new species Dothideomycetes phylogenetics saprobic taxonomy Fungi

Abstract

During an investigation of micro-fungi inhabiting mangrove forests, a new species of Rhytidhysteron was collected and isolated from dead twigs of a mangrove tree. Rhytidhysteron mangrovei sp. nov. is introduced, described, illustrated and compared with accepted species in the genus. Morphological comparison based on the size of exciple, the appearance of ascomata and ascospore septations and size as well as the multi-gene phylogenetic analyses based on LSU, ITS and TEF DNA sequences support its establishment in Rhytidhysteron. Placement of the genus in Hysteriaceae is also well-supported. In addition, phylogenetic analysis and DNA sequence data indicate that Rhytidhysteron mangrovei is closely related to Rhytidhysteron thailandicum. However, R. mangrovei is morphologically distinct from R. thailandicum, by having a relatively smaller size of exciple and perpendicularly rough-striate ascomata.