Hymenasplenium tholiformis (Aspleniaceae), a new fern species from southeastern Xizang, China based on morphological and molecular evidence

By

Qiu, Yong-Lin
Xu, Ke-Wang
Ju, Wen-Bin
Zhao, Wang-Lin
Zhang, Liang

Type

Article

Date of Publication

2022

Original Publication

PhytoKeys

Volume

204

Pages

43--56

Subjects

H. excisum subclade , Hymenasplenium , Mêdog , pinna morphology

Contributed by

Pensoft Publishers

Language

English

Published by

Sofia, Bulgaria Pensoft Publishers [2010]-

Identifiers

DOI: https://doi.org/10.3897/phytokeys.204.85746

 

Abstract

A new species of Aspleniaceae, Hymenasplenium tholiformis sp. nov., is described from Medog County in southeastern Xizang, China. The new species is morphologically similar to H. apogamum and H. szechuanense, but the former has ascending pinnae, pinna apex obtuse to rounded, pinna-marginal teeth entire, and veins terminating just below marginal teeth. Phylogenetic analysis based on five plastid markers confirmed that this new species represents a diverging lineage in the H. excisum subclade of Hymenasplenium.