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Issue: Vol. 650 No. 2: 28 May 2024
Type: Article
Published: 2024-05-28
DOI: 10.11646/phytotaxa.650.2.2
Page range: 148-156
Abstract views: 2
PDF downloaded: 0

Leptochilus tridigitatus (Polypodiaceae), a new fern species from Guangdong, China

Eastern China Conservation Centre for Wild Endangered Plant Resources, Shanghai Chenshan Botanical Garden, Shanghai, 201602, China
Key Laboratory of Mountain Ecological Restoration and Bio-Resources Utilization & Ecological Restoration Biodiversity Conservation, Chengdu Institute of Biology, Chinese Academy of Sciences (CAS), Chengdu, Sichuan 610041, China
Key Laboratory of Plant Resources Conservation and Sustainable Utilization, South China Botanical Garden, Chinese Academy of Sciences, Guangzhou, 510650, China
Eastern China Conservation Centre for Wild Endangered Plant Resources, Shanghai Chenshan Botanical Garden, Shanghai, 201602, China
Frond dimorphism Leptochilus poilanei lithophyte microsoroid fern variable characters Bryophytes

Abstract

Leptochilus tridigitatus, a new microsoroid fern species of Polypodiaceae from southwestern Guangdong, China, is described and illustrated. The new species is morphologically highly variable and most similar to L. poilanei in dimorphic fronds and simple or trifid laminae, while its fertile fronds are most similar to some of those of L. digitatus. The new species can best be distinguished from L. digitatus but sometimes is confused with L. scandens due to its occasionally pinnatifid laminae with two pairs of lateral lobes. It might have been collected from South China and misidentified as L. digitatus or other Leptochilus species.

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