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Issue: Vol. 634 No. 3: 18 Jan. 2024
Type: Article
Published: 2024-01-18
DOI: 10.11646/phytotaxa.634.3.3
Page range: 215-234
Abstract views: 138
PDF downloaded: 8

A taxonomic revision of Hedwigia (Hedwigiaceae, Hedwigiales) in China

Bryology Laboratory, Department of Biology, School of Life Sciences, East China Normal University, 500 Dongchuan Road, Shanghai 200241, China.
Herbarium, Key Laboratory for Plant Diversity and Biogeography of East Asia, Kunming Institute of Botany, Chinese Academy of Sciences, Kunming, Yunnan 650201, China.
Department of the Herbarium, Tsitsin Main Botanical Garden of the Russian Academy of Sciences, Moscow 127276, Russia.
Lomonosov Moscow State University, Faculty of Biology, Plant Ecology and Geography Department, Moscow 119234, Russia.
Laboratory of Biological Resources and Genetic Engineering, College of Life Science and Technology, Xinjiang University, Urumqi 830046, China.
College of Life and Environmental Sciences, Hangzhou Normal University, Hangzhou 311121, China.
Bryology Laboratory, Department of Biology, School of Life Sciences, East China Normal University, 500 Dongchuan Road, Shanghai 200241, China. Technology Innovation Center for Land Spatial Eco-restoration in Metropolitan Area, Ministry of Natural Resources, Shanghai 200062, China.
Bryophyta Mosses New species New synonym Phylogeny Bryophytes

Abstract

Hedwigia is a small genus that currently comprises only 12 accepted species. However, taxonomic issues within this genus remain not thoroughly resolved, and its species diversity in China is still debatable. In this study, we conducted an integrative taxonomic revision of Hedwigia in China based on both molecular and morphological evidence. We found an interesting species from Yunnan and Sichuan Province having an unknown combination of morphological characters. The molecular phylogenetic analyses based on mitochondrial nad5, chloroplast trnL-trnF and nuclear ITS markers suggest that this unknown moss represents a new species described here as H. sinica W.Z.Huang & R.L.Zhu, sp. nov. In addition, Hedwigia nemoralis Ignatova, Ignatov & Fedosov is proposed as a new synonym of H. filiformis (Michx.) P.Beauv. based on morphological and molecular evidence. Furthermore, H. czernyadjevae Ignatova, Ignatov & Fedosov, previously known only from Russia, is newly reported for China. The presence in China of H. stellata Hedenäs and H. ciliata (Hedw.) Boucher is doubtful because the voucher specimens of these two species were re-identified as H. sinica and H. emodica or H. filiformis, respectively. In conclusion, at present, four species of Hedwigia are confirmed in China.

 

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