{"title":"<i>Tricholoma olivaceonigrum</i>, a new species of the section <i>Tricholoma</i> (<i>Agaricales</i>) from Japan.","authors":"Shuji Ushijima, Eiji Nagasawa, Naoki Endo, Akiyoshi Yamada","doi":"10.47371/mycosci.2021.03.005","DOIUrl":null,"url":null,"abstract":"<p><p>A novel species of <i>Tricholoma</i> section <i>Tricholoma</i>, namely, <i>T. olivaceonigrum</i>, is described and illustrated based on samples found in an oak woods dominated by <i>Quercus myrsinifolia</i>, an evergreen oak, in Tottori Prefecture, western Japan. It is characterized by a conic-umbonate, dark-greenish olivaceous pileus with blackish innate fibrils; a whitish silky-fibrillose stipe, often faintly tinted pale yellow and with a narrowed subpointed base; subglobose to broadly elliptic spores; and fruiting in early winter. Phylogenetic analysis targeting the internal transcribed spacer region of the ribosomal RNA gene revealed that <i>T. olivaceonigrum</i> forms a well-supported clade sister to <i>T. portentosum</i>. Other morphologically and phylogenetically closely related species of the section <i>Tricholoma</i> are discussed.</p>","PeriodicalId":18780,"journal":{"name":"Mycoscience","volume":null,"pages":null},"PeriodicalIF":1.5000,"publicationDate":"2021-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://ftp.ncbi.nlm.nih.gov/pub/pmc/oa_pdf/1a/39/MYC-62-233.PMC9721503.pdf","citationCount":"2","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Mycoscience","FirstCategoryId":"99","ListUrlMain":"https://doi.org/10.47371/mycosci.2021.03.005","RegionNum":4,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q4","JCRName":"MYCOLOGY","Score":null,"Total":0}
引用次数: 2
Abstract
A novel species of Tricholoma section Tricholoma, namely, T. olivaceonigrum, is described and illustrated based on samples found in an oak woods dominated by Quercus myrsinifolia, an evergreen oak, in Tottori Prefecture, western Japan. It is characterized by a conic-umbonate, dark-greenish olivaceous pileus with blackish innate fibrils; a whitish silky-fibrillose stipe, often faintly tinted pale yellow and with a narrowed subpointed base; subglobose to broadly elliptic spores; and fruiting in early winter. Phylogenetic analysis targeting the internal transcribed spacer region of the ribosomal RNA gene revealed that T. olivaceonigrum forms a well-supported clade sister to T. portentosum. Other morphologically and phylogenetically closely related species of the section Tricholoma are discussed.
期刊介绍:
Mycoscience is the official English-language journal of the Mycological Society of Japan and is issued bimonthly. Mycoscience publishes original research articles and reviews on various topics related to fungi including yeasts and other organisms that have traditionally been studied by mycologists. The research areas covered by Mycoscience extend from such purely scientific fields as systematics, evolution, phylogeny, morphology, ecology, physiology, biochemistry, genetics, and molecular biology, to agricultural, medical, and industrial applications. New and improved applications of well-established mycological techniques and methods are also covered.