Impatiens pandurata (Balsaminaceae), a new species from Yunnan, China.

Yun-Hong Tan,Hong Jiang,Xin-Xin Zhu,Wei Zhang,Sheng-Xiang Yu,Yan-Nan Liu

doi:10.1186/s40529-015-0108-4

Abstract

BackgroundThe species-rich genus Impatiens is mainly distributed throughout much of tropical Africa, India, southwest Asia, southern China and Japan. There are more than 270 species recorded in China, most of which are restricted to the southwest. An unknown species of Impatiens was collected from Yunnan, southwest China.Results Impatiens pandurata Y. H. Tan & S. X. Yu, a new species of Balsaminaceae from Jinping County and Malipo County, Yunnan, China is similar to I. apalophylla and I. clavigera in having racemose inflorescences, 4 lateral sepals, hammer-shaped capsules and ellipsoid seeds, but differs in having leaves with oblanceolate blades aggregated at the top of the stem, 3–5-flowered racemes, a yellow lower sepal without reddish patches, yellowish flowers, and a dorsal petal with stalks at the base. Molecular phylogenetic analyses of sequences from both nuclear ribosomal and plastid genes confirm that this new species is distinct from morphologically similar species previously recorded.ConclusionWith the support of careful morphological studies and phylogenetic analysis, I. pandurata is a species new to science.Electronic supplementary materialThe online version of this article (doi:10.1186/s40529-015-0108-4) contains supplementary material, which is available to authorized users.

Highlights

The species-rich genus Impatiens is mainly distributed throughout much of tropical Africa, India, south‐ west Asia, southern China and Japan
The genus Impatiens L. (Balsaminaceae), containing over 1000 species (Grey-Wilson 1980; Fischer 2004; Yu et al 2015), is mainly distributed throughout much of tropical Africa, India, South-west Asia, southern China and Japan, with only a few species spreading into the north temperate zone of Europe, Russia and China as well as North America (Grey-Wilson 1980)
There are more than 270 species of Impatiens recorded in China (Yu 2012; Chen 2001; Chen et al 2007), most of them restricted to the southwest

Summary

Introduction

The species-rich genus Impatiens is mainly distributed throughout much of tropical Africa, India, south‐ west Asia, southern China and Japan. There are more than 270 species recorded in China, most of which are restricted to the southwest. An unknown species of Impatiens was collected from Yunnan, southwest China. (Balsaminaceae), containing over 1000 species (Grey-Wilson 1980; Fischer 2004; Yu et al 2015), is mainly distributed throughout much of tropical Africa, India, South-west Asia, southern China and Japan, with only a few species spreading into the north temperate zone of Europe, Russia and China as well as North America (Grey-Wilson 1980). There are more than 270 species of Impatiens recorded in China (Yu 2012; Chen 2001; Chen et al 2007), most of them restricted to the southwest. After additional molecular phylogenetic analysis, we are confident that this species is new to science

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Discussion

Conclusion