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Article
Published: 2022-09-29

Two new species of Impatiens (Balsaminaceae) from Gaoligong Mountains, Yunnan, China

College of Life Sciences, Hunan Normal University, Changsha 410081, China; Wuhan Botanical Garden, Chinese Academy of Sciences, Wuhan 430074, China
Wuhan Botanical Garden, Chinese Academy of Sciences, Wuhan 430074, China; Sino-Africa Joint Research Center, Chinese Academy of Sciences, Wuhan 430074, China; University of Chinese Academy of Sciences, Beijing 100049, China
South China Botanical Garden, Chinese Academy of Sciences, Guangzhou 510650, China
College of Life Sciences, Hunan Normal University, Changsha 410081, China
College of Life Sciences, Hunan Normal University, Changsha 410081, China
Wuhan Botanical Garden, Chinese Academy of Sciences, Wuhan 430074, China; Sino-Africa Joint Research Center, Chinese Academy of Sciences, Wuhan 430074, China; University of Chinese Academy of Sciences, Beijing 100049, China
description molecular phylogeny morphology taxonomy Eudicots

Abstract

Impatiens longyangensis and I. yaojiapingensis, two new species from Gaoligong Mountains, Yunnan, China, are described here. The former species is morphologically similar to I. shangjiangensis, but differs by its shorter petioles and peduncle, ovate bract, shortly saccate lower sepal with a longer spur and suborbicular dorsal petal. The latter is similar to I. sterilis, and differs by its pubescent leaf, petiole with one to three pairs of clavate glands, persistent bract, lower sepal with a straight spur and suborbicular dorsal petal. Molecular phylogenetic analysis based on nuclear ITS and plastid atpB-rbcL sequences shows that the two new species belong to I. sect. Racemosae.

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