{"title":"<i>Aspleniumguodanum</i> (Aspleniaceae), a distinct new fern species from northern Guangdong, China, based on morphological data and molecular phylogeny.","authors":"Ke-Wang Xu, Yu-Tong Han, Yu-Ran Dong, Jian-Qiang Guo, Ling-Feng Mao, Wen-Bo Liao","doi":"10.3897/phytokeys.241.122789","DOIUrl":null,"url":null,"abstract":"<p><p>A new spleenwort species, <i>Aspleniumguodanum</i>, was found and described from Danxia landform region in Guangdong, China. The new species has close resemblance to <i>A.subcrenatum</i> Ching ex S.H.Wu in morphology, but can be distinguished by having plants small, stipes and rachises not covered with fibrous scales, relatively fewer pairs of pinnae, pinnae short, pinna margin weakly biserrate, pinna apex acute and lower pinnae obviously reduced. Phylogenetic analyses, based on six plastid markers (<i>atpB</i>, <i>rbcL</i>, <i>rps</i>4 & <i>rps4-trnS</i> and <i>trnL</i> & <i>trnL-F</i>) of the new species and its relatives, support a close relationship between <i>A.guodanum</i> and <i>A.subcrenatum</i>. Only one population with no more than 50 individuals were found and, therefore, it is recommended to be classified as Critically Endangered (CR) following IUCN Red List Criteria.</p>","PeriodicalId":20070,"journal":{"name":"PhytoKeys","volume":"241 ","pages":"191-200"},"PeriodicalIF":1.5000,"publicationDate":"2024-04-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11077262/pdf/","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"PhytoKeys","FirstCategoryId":"99","ListUrlMain":"https://doi.org/10.3897/phytokeys.241.122789","RegionNum":3,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"2024/1/1 0:00:00","PubModel":"eCollection","JCR":"Q3","JCRName":"PLANT SCIENCES","Score":null,"Total":0}
引用次数: 0
Abstract
A new spleenwort species, Aspleniumguodanum, was found and described from Danxia landform region in Guangdong, China. The new species has close resemblance to A.subcrenatum Ching ex S.H.Wu in morphology, but can be distinguished by having plants small, stipes and rachises not covered with fibrous scales, relatively fewer pairs of pinnae, pinnae short, pinna margin weakly biserrate, pinna apex acute and lower pinnae obviously reduced. Phylogenetic analyses, based on six plastid markers (atpB, rbcL, rps4 & rps4-trnS and trnL & trnL-F) of the new species and its relatives, support a close relationship between A.guodanum and A.subcrenatum. Only one population with no more than 50 individuals were found and, therefore, it is recommended to be classified as Critically Endangered (CR) following IUCN Red List Criteria.
期刊介绍：
PhytoKeys is a peer-reviewed, open-access, online and print, rapidly produced journal launched to support free exchange of ideas and information in systematic botany.
All papers published in PhytoKeys can be freely copied, downloaded, printed and distributed at no charge for the reader. Authors are thus encouraged to post the pdf files of published papers on their homepages or elsewhere to expedite distribution. There is no charge for color.
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