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Issue: Vol. 239 No. 2: 23 December 2015
Type: Article
Published: 2015-12-23
DOI: 10.11646/phytotaxa.239.2.6
Page range: 174–182
Abstract views: 66
PDF downloaded: 50

Annulatascus saprophyticus sp. nov. and Pseudoannulatascus gen. nov. to accommodate Annulatascus biatriisporus (Annulatascales, Sordariomycetes) from Thailand

Mae Fah Luang University, Chiang Rai Province, Thailand; Dali University, Yunnan Province, PR China
Institute of Excellence in Fungal Research, Mae Fah Luang University, Chiang Rai , Thailand School of Science, Mae Fah Luang University, Chiang Rai , Thailand
College of Agriculture & Biology, Dali University, Dali, 671003, Yunnan, PR China.
Institute of Biotechnology and Gerplamic Resources, Yunnan Academy of Agricultural Sciences, Kunming, 650223, PR China
Institute of Biotechnology and Gerplamic Resources, Yunnan Academy of Agricultural Sciences, Kunming, 650223, PR China
Faculty of Environmental Sciences & Engineering, Kunming University of Science & Technology, Kunming 650500, Yunnan, PR China.
College of Agriculture & Biology, Dali University, Dali, 671003, Yunnan, PR China.
Institute of Excellence in Fungal Research, Mae Fah Luang University, Chiang Rai 57100, Thailand School of Science, Mae Fah Luang University, Chiang Rai 57100, Thailand
Annulatascaceae Aquatic fungi LSU Phylogeny Taxonomy Fungi Thailand

Abstract

A new Annulatascus species, A. saprophyticus, found on decaying wood in freshwater in northern Thailand is introduced in this paper. The new taxon is illustrated, described and compared with other species in the genus, as well as a key to genus is provided. It differs from other species in the genus in having straight up right necks at one end, paraphyses embedded in a gelatinous matrix, and 0–3-septate, fusoid to lunate ascospores, which are larger than other species in the genus. Phylogenetic analyses based on LSU gene data showed that A. saprophyticus belongs in Annulatascus sensu strict (Annulatascaceae, Annulatascales, Sordariomycetidae). Based on the molecular data and a reevaluation of morphology, a new genus Pseudoannulatascus in Annulatascaceae is introduced to accommodate Annulatascus biatriisporus.