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Issue: Vol. 270 No. 3: 19 August 2016
Type: Article
Published: 2016-08-19
DOI: 10.11646/phytotaxa.270.3.2
Page range: 182–190
Abstract views: 37
PDF downloaded: 50

Two new species of Helicascus (Morosphaeriaceae) from submerged wood in northern Thailand

Centre of Excellence in Fungal Research, and School of Science, Mae Fah Luang University, Chiang Rai 57100, Thailand. Dali University, Yunnan Province, PR China
Centre of Excellence in Fungal Research, and School of Science, Mae Fah Luang University, Chiang Rai 57100, Thailand.
Guizhou Key Laboratory of Agricultural Biotechnology, Guizhou Academy of Agricultural Sciences, Guiyang City, Guizhou Province 550006, PR China
College of Agriculture & Biology, Dali University, Dali, 671003, Yunnan, PR China.
Department of Botany and Microbiology, King Saudi University, Riyadh, Saudi Arabia
Centre of Excellence in Fungal Research, and School of Science, Mae Fah Luang University, Chiang Rai 57100, Thailand.
aquatic fungi Dothideomycetes Morosphaeriaceae morphology phylogeny Fungi

Abstract

Helicascus species from submerged wood in aquatic habitats in northern Thailand were studied based on morphology and analysis of DNA sequence data. Descriptions and illustrations of H. elaterascus and a new species H. chiangraiensis are provided.  H. chiangraiensis is characterized by unilocular ascostromata, fissitunicate asci with a long, narrow and coiled endoascus, ascospores with 2–4 large refractive guttules. The phylogenetic analysis based on combined ITS, LSU and SSU sequence data placed the species in Morosphaeriaceae (Pleosporales).