Aspleniumguodanum (Aspleniaceae), a distinct new fern species from northern Guangdong, China, based on morphological data and molecular phylogeny

A new spleenwort species, , was found and described from Danxia landform region in Guangdong, China. The new species has close resemblance to 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...

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Published inPhytoKeys Vol. 241; pp. 191 - 200
Main Authors Xu, Ke-Wang, Han, Yu-Tong, Dong, Yu-Ran, Guo, Jian-Qiang, Mao, Ling-Feng, Liao, Wen-Bo
Format Journal Article
LanguageEnglish
Published Bulgaria Pensoft Publishers 2024
Subjects
Asia
Aspleniaceae
Polypodiales
Taxonomy
species diversity
taxonomy
Danxia landform
Conservation
molecular phylogeny
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Summary:A new spleenwort species, , was found and described from Danxia landform region in Guangdong, China. The new species has close resemblance to 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 ( , , 4 & and & ) of the new species and its relatives, support a close relationship between and . 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.
Bibliography:ObjectType-Article-1
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Academic editor: Blanca León
ISSN:1314-2011
1314-2003
DOI:10.3897/phytokeys.241.122789