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Issue: Vol. 781 No. 3: 22 Oct. 2026
Type: Article
Published: 2026-10-22
DOI: 10.11646/phytotaxa.781.3.5
Page range: 262-270
Abstract views: 14
PDF downloaded: 0

A new holomycoheterotrophic orchid species of Silvorchis (Orchidinae, Orchideae, Orchidaceae) from the Xizang Autonomous Region

Key Laboratory of National Forestry and Grassland Administration on Plant Ex situ Conservation and Use; Institute of Botany; Chinese Academy of Sciences; Nanxincun 20; Xiangshan; Beijing; 100093; China; University of Chinese Academy of Sciences; Beijing; China; China National Botanical Garden; Beijing; 100093; China
Key Laboratory of National Forestry and Grassland Administration on Plant Ex situ Conservation and Use; Institute of Botany; Chinese Academy of Sciences; Nanxincun 20; Xiangshan; Beijing; 100093; China; University of Chinese Academy of Sciences; Beijing; China
Key Laboratory of National Forestry and Grassland Administration on Plant Ex situ Conservation and Use; Institute of Botany; Chinese Academy of Sciences; Nanxincun 20; Xiangshan; Beijing; 100093; China; China National Botanical Garden; Beijing; 100093; China
Key Laboratory of National Forestry and Grassland Administration on Plant Ex situ Conservation and Use; Institute of Botany; Chinese Academy of Sciences; Nanxincun 20; Xiangshan; Beijing; 100093; China; China National Botanical Garden; Beijing; 100093; China
Motuo Biodiversity Observation and Research Station of Xizang Autonomous Region; Institute of Plateau Biology of Xizang Autonomous Region; Lhasa 850000; Xizang; China
Key Laboratory of National Forestry and Grassland Administration on Plant Ex situ Conservation and Use; Institute of Botany; Chinese Academy of Sciences; Nanxincun 20; Xiangshan; Beijing; 100093; China; University of Chinese Academy of Sciences; Beijing; China
Monocots New species newly recorded genus plastid genome Silvorchis Xizang

Abstract

A new species of Orchidaceae, Silvorchis wuniana, is described and illustrated from Xizang Autonomous Region, based on morphological characters and molecular systematics. Silvorchis wuania is closely related to Silvorchis aurea, Silvorchis furcata, and Silvorchis colorata but differs from the latter three by its lip not lobed (vs. lip 2- to 3-lobed), basal part of lip slightly thickened (vs. basal part of lip with fleshy callus), lip apex not bifid (vs. lip middle lobe bifid into linear lobules), and column with no prominent wings (vs. with prominent wings). Silvorchis is also a newly recorded genus in China. Plastid genome of Silvorchis wuania is highly reduced and comprises 97,500 bp, including 54 intact genes, most of photosynthesis-related genes were lost.

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How to Cite

Lin, D., Fu, Y., Tan, K., Lin, Q., Wang, X. & Jin, X. (2026) A new holomycoheterotrophic orchid species of Silvorchis (Orchidinae, Orchideae, Orchidaceae) from the Xizang Autonomous Region. Phytotaxa 781 (3): 262–270. https://doi.org/10.11646/phytotaxa.781.3.5