Abstract
The Hengduan Mountains, as one important biodiversity hotspots in the world, is notable for its high habitat heterogeneity and extreme plant diversity which including many endemics species. Incarvillea uniflora, a new species is described from Hengduan Mountains. The new species is similar to I. himalayensis in having red corolla, stemless, solitary flower, capsule 4-angled and winged seeds, but differs by the characters of stable simple leaves, long triangular calyx lobes and solitary or clustered flowers. It is considered to be Data Deficient (DD) due to the lack of further field investigation.
References
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<p>Sun, H., Zhang, J., Deng, T. & Boufford, D.E. (2017) Origins and evolution of plant diversity in the Hengduan Mountains, China. <em>Plant Diversity</em> 39: 161–166. https://doi.org/10.1016/j.pld.2017.09.004</p>
<p>Boufford, D.E. (2014) Hengduan Mountains, hotspot of biodiversity. <em>Arnoldia</em> 72: 24–35.</p>
<p>Chen, S.T., Guan, K.Y. & Zhou, Z.K. (2006) A new subgenus of <em>Incarvillea</em> (Bignoniaceae). <em>Annales Botanici Fennici</em> 43: 288–290.</p>
<p>Chen, S.T., Guan, K.Y., Zhou, Z.K., Olmstead, R. & Cronk, Q. (2005) Molecular phylogeny of <em>Incarvillea</em> (Bignoniaceae) based on ITS and trnL-F sequences. <em>American Journal of Botany</em> 92: 625–633. https://doi.org/10.3732/ajb.92.4.625</p>
<p>Deng, Y.F. (2020) Bignoniaceae.<em> In: </em>Deng, Y.F., Li, Z.Y., Wang, Q. & Peng, H. (eds.) <em>Flora of Pan-Himalaya</em> 46. Science Press, Beijing, pp. 444–511.</p>
<p>Fedtsch, B.A. (1915) Notes on some new or rare plants 1-3. <em>Izvĕstija Imperatorskago Botaničeskago Sada Petra Velikago</em> 15: 399–401.</p>
<p>Grey-Wilson, C. (1998) A new look at <em>Incarvillea</em> subgenus <em>Pteroscleris</em>. <em>The New Plantsman</em> 5: 77–98.</p>
<p>IUCN (2012) IUCN Red List Categories and Criteria, Version 3.1. Gland, Switzerland and Cambridge, U.K. IUCN Species Survival Commission, 38 pp. Available from: http://cmsdocs.s3.amazonaws.com/RedListGuidelines.pdf (accessed 20 October 2021)</p>
<p>Jussieu, A.L. de. (1789) <em>Genera Plantarum</em>. Apud viduam Herissant et Theophilum Barrois, Parisiis, 498 pp.</p>
<p>Léveillé, A.A.H. (1915) <em>Catalogue des Plantes de Yun-Nan </em>(2). Le Mans, Chez l’Auteur, pp. 16–32.</p>
<p>Li, N. & Hua, B.Z. (2020) Two new species of <em>Panorpa</em> (Mecoptera, Panorpidae) from the Hengduan Mountains in Yunnan, China. <em>Journal of Asia-Pacific Entomology</em> 23: 138–145. https://doi.org/10.1016/j.aspen.2019.12.005</p>
<p>Rana, S.K., Luo, D., Rana, H.K., Chen, S. & Sun, H. (2021b) Molecular phylogeny, biogeography and character evolution of the montane genus<em> Incarvillea</em> Juss. (Bignoniaceae). <em>Plant Diversity</em> 43: 1–14. https://doi.org/10.1016/j.pld.2020.09.002</p>
<p>Rana, S.K., Rana, H.K., Luo, D. & Sun, H. (2021a) Estimating climate-induced “Nowhere to go” range shifts of the Himalayan <em>Incarvillea</em> Juss. using multi-model median ensemble species distribution models. <em>Ecological Indicators</em> 121: 107127. https://doi.org/10.1016/j.ecolind.2020.107127</p>
<p>Grierson, A.J.C. (1961) A revision of the genus <em>Incarvillea</em>. <em>Notes from the Royal Botanic Garden, Edinburgh </em>23: 303–354.</p>
<p>Fletcher, H.R. (1935) A new Chinese <em>Incarvillea</em>. <em>Notes from the Royal Botanic Garden, Edinburgh </em>18: 310.</p>
<p>Royle, J.F. (1835) <em>Illustrations of the botany and other branches of the natural history of the Himalayan Mountains and of the flora of Cashmere</em>9. Wm. H. Allen, London, pp. 289–336. https://doi.org/10.2307/1797888</p>
<p>Sun, H., Zhang, J., Deng, T. & Boufford, D.E. (2017) Origins and evolution of plant diversity in the Hengduan Mountains, China. <em>Plant Diversity</em> 39: 161–166. https://doi.org/10.1016/j.pld.2017.09.004</p>