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Issue: Vol. 751 No. 2: 15 Apr. 2026
Type: Article
Published: 2026-04-15
DOI: 10.11646/phytotaxa.751.2.7
Page range: 163-175
Abstract views: 0
PDF downloaded: 0

A new species of Impatiens (Balsaminaceae) from southeastern Xizang, China

College of Ecological Environment, Xizang University, Lhasa 850000, China; State Key Laboratory of Plant Diversity and Specialty Crops, Wuhan Botanical Garden, Chinese Academy of Sciences, Wuhan 430074, China
State Key Laboratory of Plant Diversity and Specialty Crops, Wuhan Botanical Garden, Chinese Academy of Sciences, Wuhan 430074, China; University of Chinese Academy of Sciences, Beijing 100049, China
Central South Academy of Inventory and Planning of NFGA, Changsha 410014, China
Central South Academy of Inventory and Planning of NFGA, Changsha 410014, China
Central South Academy of Inventory and Planning of NFGA, Changsha 410014, China
Chayu Forestry and Grassland Bureau of Xizang, Linzhi 860000, China
College of Life Sciences, Hunan Normal University, Changsha 410081, China
State Key Laboratory of Plant Diversity and Specialty Crops, Wuhan Botanical Garden, Chinese Academy of Sciences, Wuhan 430074, China ; Sino-Africa Joint Research Center, Chinese Academy of Sciences, Wuhan 430074, China; Hubei Jiangxia Laboratory, Wuhan 430200, China
State Key Laboratory of Plant Diversity and Specialty Crops, Wuhan Botanical Garden, Chinese Academy of Sciences, Wuhan 430074, China; Sino-Africa Joint Research Center, Chinese Academy of Sciences, Wuhan 430074, China
State Key Laboratory of Plant Diversity and Specialty Crops, Wuhan Botanical Garden, Chinese Academy of Sciences, Wuhan 430074, China; Sino-Africa Joint Research Center, Chinese Academy of Sciences, Wuhan 430074, China
Impatiens New Species Taxonomy Phylogeny Xizang Eudicots

Abstract

Impatiens zayuensis (Balsaminaceae), from Cibagou National Nature Reserve in southeastern Xizang, China, is described. Based on molecular evidence, I. zayuensis is assigned to I. sect. Racemosae. Morphologically, it is close to I. margaritifera and I. casseabriae in having spurless flowers, but differs in upper stem with glands, ovate lateral sepals, dentate margin of lateral sepals, sub-dolabriform or oblong lower petal, and oblique mouth of lower sepal. Phylogenetically, the new species does not cluster with the other two similar spurless species, indicating that the spurless character may have evolved several times within the I. sect. Racemosae.

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How to Cite

Yuan, T.-H., Hu, T., Zhang, B., Cao, M., Du, Z., Chen, X.-Y., Cong, Y.-Y., Hu, G.-W., Peng, S. & Wang, Q.-F. (2026) A new species of Impatiens (Balsaminaceae) from southeastern Xizang, China. Phytotaxa 751 (2): 163–175. https://doi.org/10.11646/phytotaxa.751.2.7