期刊
MYCOLOGIA
卷 105, 期 2, 页码 436-446出版社
TAYLOR & FRANCIS INC
DOI: 10.3852/12-155
关键词
Agaricales; barcoding; herbarium; indole alkaloid; p-dimethylaminobenzaldehyde; phylogenetic taxonomy
类别
资金
- University of Tennessee, Department of Ecology and Evolutionary Biology
- National Science Foundation [DEB-0949517]
- Division Of Environmental Biology
- Direct For Biological Sciences [949517] Funding Source: National Science Foundation
A species of Inocybe common in Washington, Oregon and British Columbia is documented and described as new. The species, I. chondroderma, is characterized by these features: pileus with a fulvous disk and ochraceous to chamois margin, presence of a cortina, densely mycelioid stipe base, smooth spores and fall phenology. The most reliable and distinctive feature of the species is a blue-green or turquoise reaction in response to application of a solution of p-dimethylaminobenzaldehyde (PDAB), indicating the presence of what is most likely an indole alkaloid. PDAB use provides a quick and diagnostic character easily implemented in a laboratory setting. ITS sequences from recent collections of I. chondroderma and from materials collected in the 1940s in Washington and Oregon fully match numerous mislabeled sequences from specimens in British Columbia and Oregon. The species is most closely related to an unclarified taxon from Colorado and Japan (I. cf. chondroderma) and a rare European species, I. subnudipes. Nine different species names in Inocybe and one in Hebeloma attributed to I. chondroderma based on GenBank BLASTN searches of the ITS locus match with 99-100% similarity, reinforcing concerns about taxonomic inaccuracies in public DNA sequence databases. A complete morphological description, illustrations and phylogenetic assessment are provided.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据