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Issue: Vol. 659 No. 3: 11 Jul. 2024
Type: Article
Published: 2024-07-11
DOI: 10.11646/phytotaxa.659.3.1
Page range: 213-235
Abstract views: 134
PDF downloaded: 4

Exploring the diversity of the Java fern genus Leptochilus (Polypodiaceae) in the Indo-Burma Biodiversity Hotspot

Key Laboratory for Plant Diversity and Biogeography of East Asia, Kunming Institute of Botany, Chinese Academy of Sciences, Kunming, Yunnan 650201, China
Department of Biology, Vietnam National Museum of Nature, Vietnam Academy of Science and Technology, 18 Hoang Quoc Viet, Hanoi, Vietnam; Graduate University of Science and Technology, Vietnam Academy of Science and Technology, 18 Hoang Quoc Viet, Hanoi, Vietnam
School of Ecology and Environmental Science, Yunnan University, Kunming, Yunnan 650091, China
Key Laboratory for Plant Diversity and Biogeography of East Asia, Kunming Institute of Botany, Chinese Academy of Sciences, Kunming, Yunnan 650201, China
Institute of Traditional Medicine, Vientiane, Lao PDR
Department of Ecology - Evolutionary Biology, Vietnam National University Ho Chi Minh City (VNUHCM) - University of Science, 227 Nguyen Van Cu Street, District 5, Ho Chi Minh City, Vietnam
Missouri Botanical Garden, 4344 Shaw Blvd, St. Louis, Missouri, 63110 U.S.A.; Chengdu Institute of Biology, Chinese Academy of Sciences, Chengdu 610041, Sichuan, China
cryptic speciation microsoroids Old World ferns systematics Pteridophytes

Abstract

The species diversity of certain groups of ferns in Indo-Burma Biodiversity Hotspot remains largely unexplored using combined molecular and morphological approaches. Here, based on morphology and an updated phylogeny of Leptochilus with 121 (115% increase of the latest sampling) new samples across Asia added, specifically those of three systematically significant “old” species, L. ovatus, L. pedunculatus, and L. pothifolius, we discovered 11 new species of the genus and made two new combinations. The new species are described in detail, the taxonomic treatment is given, and a key to the 51 currently known species of the genus is provided.

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