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Issue: Vol. 333 No. 2: 9 January 2018
Type: Article
Published: 2018-01-09
DOI: 10.11646/phytotaxa.333.2.13
Page range: 281–286
Abstract views: 24
PDF downloaded: 1

Hymenasplenium hastifolium sp. nov. (Aspleniaceae) from a karst cave in western Guangxi, China

State Key Laboratory of Biocontrol and Guangdong Provincial Key Laboratory of Plant Resources, School of Life Sciences, Sun Yat-sen University, Guangzhou 510275, Guangdong, China.
Chengdu Institute of Biology, Chinese Academy of Sciences, P.O. Box 416, Chengdu, Sichuan 610041, China
Missouri Botanical Garden, P.O. Box 299, St. Louis, Missouri 63166-0299, U.S.A.
State Key Laboratory of Biocontrol and Guangdong Provincial Key Laboratory of Plant Resources, School of Life Sciences, Sun Yat-sen University, Guangzhou 510275, Guangdong, China.
Aspleniaceae cave species Guangxi Hymenasplenium hastifolium limestone area pteridophytes

Abstract

A new fern species, Hymenasplenium hastifolium (Aspleniaceae), from a limestone cave in western Guangxi, China, is described and illustrated. Morphological affinities of genus Hymenasplenium are also compared and discussed. The new species is distinguished by the shape of lamina, the venation, and the sorus distribution. Hymenasplenium hastifolium was found at a cave entrance and is currently known only from one population with ca. 50 individuals. It should be classified as Critically Endangered (CR) following IUCN Red List criteria.