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| Impatiens yaojiapingensis Y.Y.Cong, G.W.Hu & T.Hu, in Hu, Peng, Zhou, ... et Hu, 2022. |
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.
Keywords: Balsaminaceae, Impatiens, new taxa, Gaoligong Mountains, taxonomy, Eudicots
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| Impatiens longyangensis (A‒F) and I. shangjiangensis (G‒I). A habit; B infructescence; C adaxial and abaxial view of leaf; D, G front view of flower; E, H lateral view of flower; F, I dissection of a flower A‒E & G‒H: photographed by Yi-Yan Cong, F & I: photographed by Tian Hu. |
Impatiens longyangensis Y.Y.Cong, G.W.Hu & S.Peng, sp. nov.
Distribution and ecology:— Impatiens longyangensis is only found in the central Gaoligong Mountains. It grows in moist places under the forests on the roadside at elevations of 2391–2420m. The main associated species included Acer Linnaeus (1753: 1054) sp., Phoebe Nees (1836: 98) sp., Vitis Linnaeus (1753: 202) sp., Rubus Linnaeus (1753: 492) sp.
Etymology:—The specific epithet “longyangensis” refers to the type locality, Longyang District, Baoshan City, Yunnan Province.
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| Impatiens yaojiapingensis. (A‒I) and I. sterilis (J‒M). A population; B habit; C inflorescence; D infructescence; E apex of stem; F, J glands on leaf base; G, K front view of flower; H, L lateral view of flower; I, M dissection of a flower. A‒H & J‒L: photographed by Yi-Yan Cong, I & M: photographed by Tian Hu. |
Impatiens yaojiapingensis Y.Y.Cong, G.W.Hu & T.Hu, sp. nov.
Distribution and ecology: — Impatiens yaojiapingensis was only found in the central Gaoligong Mountains. It grows in moist places on the roadside at elevations of 2464–3012 m. The main associated species included Rubus Linnaeus (1753: 492) sp., Rhododendron Linnaeus (1753: 392) sp., Pteris Linnaeus (1753: 1073) sp., Elatostema Forst & Forst (1776: 105) sp.
Etymology: —The specific epithet “yaojiapingensis” refers to the type locality, Yaojiaping, Lushui City, Yunnan Province.
Tian Hu, Shuai Peng, Xin-Xin Zhou, Yi-Ming Zheng, Yi-Yan Cong and Guang-Wan Hu. 2022. Two New Species of Impatiens (Balsaminaceae) from Gaoligong Mountains, Yunnan, China. Phytotaxa. 566(3); 268-278. DOI: 10.11646/phytotaxa.566.3.2
Researchgate.net/project/Balsaminaceae-Information-Center
