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.
References
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<p align="justify"><span style="color: #000000;"><span style="font-family: Times New Roman, serif;"><span style="font-size: small;">Gu, J.Z., Yang, N., Peng, Y.C., Song, Y.X., Guo, S.W. & Cong, Y.Y. (2021) <em>Impatiens shangjiangensis</em> (Balsaminaceae), a new species from Yunnan, China. <em>Annales Botanici Fennici</em> 58: 197–201. http://dx.doi.org/10.5735/085.058.0401 </span></span></span></p>
<p align="justify"><span style="color: #000000;"><span style="font-family: Times New Roman, serif;"><span style="font-size: small;">Guindon, S., Dufayard, J.F., Lefort, V., Anisimova, M., Hordijk, W. & Gascuel, O. (2010) New Algorithms and Methods to Estimate Maximum-Likelihood Phylogenies: Assessing the Performance of PhyML 3.0. <em>Systematic Biology</em> 59 (3): 307–321. https://dx.doi.org/10.1093/sysbio/syq010</span></span></span></p>
<p align="justify"><span style="color: #000000;"><span style="font-family: Times New Roman, serif;"><span style="font-size: small;">Handel-Mazzetti. (1933) <em>Symbolae Sinicae, vol. 7.</em> Springer, J., Wien, 2364 pp. https://doi.org/10.5962/bhl.title.878</span></span></span></p>
<p align="justify"><span style="color: #000000;"><span style="font-family: Times New Roman, serif;"><span style="font-size: small;">IUCN Standards and Petitions Subcommittee (2022) Guidelines for using the <em>IUCN Red List Categories and Criteria</em>. <em>Version</em> 15. Available from: https://nc.iucnredlist.org/redlist/content/attachment_files/RedListGuidelines.pdf (accessed January 2022)</span></span></span></p>
<p align="justify"><span style="color: #000000;"><span style="font-family: Times New Roman, serif;"><span style="font-size: small;">Janssens, S., Geuten, K., Yuan, Y.M., Song, Y., Küpfer, P. & Smets, E. (2006) Phylogenetics of <em>Impatiens</em> and <em>Hydrocera</em> (Balsaminaceae) using chloroplast <em>atpB-rbcL</em> spacer sequences. <em>Systematic Botany</em> 31 (1): 171–180. https://doi.org/10.1600/036364406775971796</span></span></span></p>
<p align="justify"><span style="color: #000000;"><span style="font-family: Times New Roman, serif;"><span style="font-size: small;">Kalyaanamoorthy, S., Minh, B.Q., Wong, T.K., von Haeseler, A. & Jermiin, L.S. (2017) ModelFinder: Fast model selection for accurate phylogenetic estimates. <em>Nature Methods</em> 14 (6): 587–589. https://doi.org/10.1038/nmeth.4285</span></span></span></p>
<p align="justify"><span style="color: #000000;"><span style="font-family: Times New Roman, serif;"><span style="font-size: small;">Kumar, S., Stecher, G., Li, M., Knyaz, C. & Tamura, K. (2018) MEGA X: Molecular Evolutionary Genetics Analysis across Computing Platforms. <em>Molecular Biology and Evolution</em> 35 (6): 1547–1549. https://doi.org/10.1093/molbev/msy096</span></span></span></p>
<p align="justify"><span style="color: #000000;"><span style="font-family: Times New Roman, serif;"><span style="font-size: small;">Li, H., Huang, H.Q. & Huang, M.J. (2013) Investigation and application of <em>Impatiens</em> L. resource in Yunnan. <em>Northern Horticulture</em> 10: 91–94.</span></span></span></p>
<p align="justify"><span style="color: #000000;"><span style="font-family: Times New Roman, serif;"><span style="font-size: small;">Liao, R.L., Cai, L., Yu, Z.Y., Wang, Y.H. & Sun, W.B. (2021) <em>Impatiens wutaishanensis</em> (Balsaminaceae), a new species from Southeast Yunnan, China. <em>PhytoKeys</em> 176: 43–53. https://doi.org/10.3897/phytokeys.176.58825</span></span></span></p>
<p align="justify"><span style="color: #000000;"><span style="font-family: Times New Roman, serif;"><span style="font-size: small;">Linnaeus, C. (1753) <em>Species Plantarum.</em> Salvius, Stockholm, 1200 pp. https://doi.org/10.5962/bhl.title.669</span></span></span></p>
<p align="justify"><span style="color: #000000;"><span style="font-family: Times New Roman, serif;"><span style="font-size: small;">Liu, C.J., Lin, Q. & He, J.X. (2004) Methods and terminology of study on seed morphology from China. <em>Acta Botanica Boreali-occidentalia Sinica</em> 24: 178–188.</span></span></span></p>
<p align="justify"><span style="color: #000000;"><span style="font-family: Times New Roman, serif;"><span style="font-size: small;">Lu, Y.Q. (1991) Pollen morphology of <em>Impatiens</em> L. (Balsaminaceae) and its taxonomic implications. <em>Journal of Systematics and Evolution</em> 29 (4): 352–357. </span></span></span></p>
<p align="justify"><span style="color: #000000;"><span style="font-family: Times New Roman, serif;"><span style="font-size: small;">Lu, Y.Q. & Chen, Y.L. (1991) Seed morphology of <em>Impatiens</em> L. (Balsaminaceae) and its taxonomic implications. <em>Journal of Systematics and Evolution</em> 29 (3): 252–257</span></span></span></p>
<p align="justify"><span style="color: #000000;"><span style="font-family: Times New Roman, serif;"><span style="font-size: small;">Myers, N., Mittermeier, R.A., Mittermeier, C.G., da Fonseca, G.A.B. & Kent, J. (2000) Biodiversity hotspots for conservation priorities. <em>Nature</em> 403: 853–858. https://doi.org/10.1038/35002501</span></span></span></p>
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<p align="justify"><span style="color: #000000;"><span style="font-family: Times New Roman, serif;"><span style="font-size: small;">Nguyen, L.T., Schmidt, H.A., von Haeseler, A. & Minh, B.Q. (2014) IQ-TREE: A Fast and Effective Stochastic Algorithm for Estimating Maximum-Likelihood Phylogenies. <em>Molecular Biology and Evolution</em> 32 (1): 268–274. https://doi.org/10.1093/molbev/msu300</span></span></span></p>
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