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Type: Article
Published: 2020-03-25
Page range: 97–104
Abstract views: 21
PDF downloaded: 1

Lepisorus youxingii (Polypodiaceae), a new fern species from Guangxi, China

State Key Laboratory of Systematic and Evolutionary Botany, Institute of Botany, Chinese Academy of Sciences, Beijing 100093, China University of Chinese Academy of Sciences, Beijing 100049, China
State Key Laboratory of Systematic and Evolutionary Botany, Institute of Botany, Chinese Academy of Sciences, Beijing 100093, China School of Life and Pharmaceutical Sciences, Hainan University, Hainan 570228, China
State Key Laboratory of Systematic and Evolutionary Botany, Institute of Botany, Chinese Academy of Sciences, Beijing 100093, China
epiphytic fern new species taxonomy Pteridophytes

Abstract

Lepisorus youxingii, a new fern of Polypodiaceae from southern China, is described and illustrated. Morphological comparison with L. thunbergianus, L. oligolepidus, and L. lewisii is provided. Both morphological and molecular evidences clearly indicate that L. youxingii is a distinct species. It differs in rhizome scales (brown, iridescent, transparent, lanceolate with broadly ovate base, margin denticulate, and apex long acuminate), laminae (lanceolate, widest at third from the base, base attenuate, decurrent, with margin narrowly callose, and apex long caudate), and paraphyses (brown, orbicular, with margin denticulate, and lumina transparent). This species is in protected area with more than 250 mature individuals and it can be classified as LC (Least Concern) according to IUCN criteria.