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

被引：0

作者：

Xu, Ke-Wang ^{[1
]}

Han, Yu Tong ^{[1
]}

Dong, Yu-Ran ^{[2
]}

Guo, Jian-Qiang ^{[3
]}

Mao, Ling-Feng ^{[2
]}

Liao, Wen-Bo ^{[4
,5
]}

机构：

[1] Nanjing Forestry Univ, Coll Life Sci, Coinnovat Ctr Sustainable Forestry Southern China, Nanjing 510275, Peoples R China

[2] Nanjing Forestry Univ, Coll Ecol & Environm, Nanjing 510275, Peoples R China

[3] Adm Commiss Danxia Mt Natl Pk, Shaoguan 512300, Guangdong, Peoples R China

[4] Sun Yat Sen Univ, Sch Life Sci, State Key Lab Biocontrol, Guangzhou 510275, Peoples R China

[5] Sun Yat Sen Univ, Sch Life Sci, Guangdong Prov Key Lab Plant Resources, Guangzhou 510275, Peoples R China

来源：

PHYTOKEYS | 2024年 / 241期

基金：

中国国家自然科学基金;

关键词：

Conservation; Danxia landform; molecular phylogeny; species diversity; taxonomy; YUNNAN;

D O I：

10.3897/phytokeys.241.122789

中图分类号：

Q94 [植物学];

学科分类号：

071001 ;

摘要：

A new spleenwort species, Asplenium guodanum, 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.

引用

页码：191 / 200

页数：10

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