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Issue: Vol. 343 No. 3: 12 March 2018
Type: Article
Published: 2018-03-12
DOI: 10.11646/phytotaxa.343.3.7
Page range: 269–276
Abstract views: 24
PDF downloaded: 1

Tylopilus callainus, a new species with a sea-green color change of hymenophore and context from the south of China

College of Materials and Chemistry Engineering, Hainan University, Haikou 570228, China
Key Laboratory of Modern Preparation of TCM of Ministry of Education, Jiangxi University of Traditional Chinese Medicine, Nanchang 330004, China
Hainan Yinggeling National Nature Reserve, Baisha, 572800, China
College of Pharmacy-Transgenic Laboratory, Hainan Medical University, Haikou 571199, China
College of Pharmacy-Transgenic Laboratory, Hainan Medical University, Haikou 571199, China
bolete new taxon molecular phylogeny morphology taxonomy Fungi

Abstract

Tylopilus callainus (Boletaceae, Boletales) is described as a new species from the south of China. It is morphologically characterized by a brown pileus tinged with sea-green, a sea-green color change of hymenophore and context when injured, a stipe with sea-green color on the upper part, and a trichodermal pileipellis with slightly inflated hyphae. Phylogenetic analyses of DNA sequences from partial 28S regions, the nuc rDNA internal transcribed spacer (ITS) and the translation elongation factor 1-α gene (TEF1) also confirm that T. callainus forms an independent lineage within Tylopilus s. str. Consequently, a detailed description, color photos of fresh basidiomata and line-drawings of microstructures are presented.