Abstract
Vincetoxicum junzifengense from Fujian Province in Southeast China is described and illustrated. This new species is similar to V. versicolor and V. stauntonii, but it differs by its climber life form, pubescent lanceolate leaf, triangular corolla lobe, dentate corona lobe, and ovoid pollinium. Phylogenetic analysis using the nuclear (ITS) and three plastid (trnT-L, trnG and psbA-trnH) DNA sequences reveals that V. junzifengense is close to V. versicolor and V. yonakuniense.
References
<p>Brown, R. (1810) <em>Prodromus Florae Novae Hollandiae et Insulae van Diemen</em>. Richard Taylor & Son, London, 590 pp.</p>
<p>Bunge, A. (1833) <em>Enumeratio Plantarum, quas in China boreali collegit.</em> Without publisher, St. Petersburg, 73 pp.</p>
<p>Chen, S.P., Tian, H.Z., Guan, Q.X., Zhai, J.W., Zhang, G.Q., Chen, L.J., Liu, Z.J., Lan, S.R. & Li, M.H. (2019) Molecular systematics of Goodyerinae (Cranichideae, Orchidoideae, Orchidaceae) based on multiple nuclear and plastid regions. <em>Molecular Phylogenetics and Evolution</em> 139: 106542. https://doi.org/10.1016/j.ympev.2019.106542</p>
<p>de Candolle, A.P. (1844) <em>Prodromus Systematis Naturalis Regni Vegetabilis</em>, vol. 8. Treuttel & Würtz, Paris, 684 pp.</p>
<p>Diels, L. (1905) Beiträge zur Flora des Tsin ling shan und andere Zusätze zur Flora von Central China. <em>Botanische Jahrbücher für Systematik, Pflanzengeschichte und Pflanzengeographie</em> 36 (Beibl. 82): 1–138.</p>
<p>Douglass, C.H., Weston, L.A. & DiTommaso, A. (2009) Black and pale swallow-wort (<em>Vincetoxicum nigrum</em> and <em>V. rossicum</em>): the biology and ecology of two perennial, exotic and invasive vines. <em>In</em>: Inderjit (Ed.) <em>Management of Invasive Weeds</em>. Springer, Netherland, pp. 261–277. https://doi.org/10.1007/978-1-4020-9202-2_13</p>
<p>Hatusima, S. (1977) A new species of<em> Cynanchum</em> from the Ryukyus. <em>Journal of Geobotany</em> 25: 26–27.</p>
<p>IUCN. (2020) <em>The IUCN Red List of Threatened Species, version 2020–1. </em>IUCN Red List Unit, Cambridge UK. Available from: http://www.iucnredlist.org (accessed 1 May 2021).</p>
<p>Jiang, L.Q., Li, Y.Y., Zhu, X.X., Wang, Y.H. & Peng, H. (2018) <em>Vincetoxicum xinpingense</em> (Asclepiadeae, Asclepiadoideae, Apocynaceae), a new species from Yunnan Province, China. <em>Phytotaxa</em> 361: 56–64. https://doi.org/10.11646/phytotaxa.361.1.4</p>
<p>Li, P.T., Gilbert, M.G. & Stevens, W.D. (1995) Asclepiadaceae. <em>In:</em> Wu, C.Y. & Raven (Eds.) <em>Flora of China</em>, vol. 16. Science Press, Beijing & Missouri Botanical Garden Press, St. Louis, pp. 189–270.</p>
<p>Liede, S. (1996) <em>Cynanchum</em> – <em>Rhodostegiella</em> – <em>Vincetoxicum</em> – <em>Tylophora</em>: new considerations on an old problem. <em>Taxon</em> 45: 193–211. https://doi.org/10.2307/1224660</p>
<p>Liede-Schumann, S., Kong, H.H., Meve, U. & Thiv, M. (2012) <em>Vincetoxicum</em> and <em>Tylophora</em> (Apocynaceae: Asclepiadoideae: Asclepiadeae)-two sides of the same medal: Independent shifts from tropical to temperate habitats. <em>Taxon</em> 61: 803–825. https://doi.org/10.1002/tax.614007</p>
<p>Linnaeus, C. (1753) <em>Species Plantarum</em>, vol. 1. Imprensis Laurentii Salvii, Holmiae, 560 pp.</p>
<p>Miller, M.A., Pfeiffer, W. & Schwartz, T. (2010) Creating the CIPRES Science Gateway for inference of large phylogenetic trees. <em>In</em>: <em>Proceedings of the Gateway Computing Environments Workshop</em>. New Orleans, pp. 1–8. https://doi.org/10.1109/GCE.2010.5676129</p>
<p>Qiu, S.X., Li, D.Z., Zhang, Z.X., Zhou, J. & Wu, C.Y. (1989) Chemotaxonomy of <em>Cynanchum</em> and its allied genera with notes on the generic characteristics of <em>Vincetoxicum</em>. <em>Acta Botanica Yunnanica</em> 11 (1): 41–50.</p>
<p>Ronquist, F. & Huelsenbeck, J.P. (2003) MrBayes 3: Bayesian phylogenetic inference under mixed models. <em>Bioinformatics</em> 19: 1572–1574. https://doi.org/10.1093/bioinformatics/btg180</p>
<p>Shah, S.A., Sultan, A., Wen, J., Ullah, Z., Un Nisa, S., Ren, Z., Alam, M.M., Iqbal, J. & Mumtaz, A.S. (2021) Taxonomy of <em>Vincetoxicum</em> s.str. (Asclepiadoideae, Apocynaceae) from southern Asia including three new species and resurrected names. <em>PhytoKeys</em> 179: 35–73. https://doi.org/10.3897/phytokeys.179.62514</p>
<p>Stamatakis, A., Hoover, P. & Rougemont, J. (2008) A rapid bootstrap algorithm for the RAxML web-servers. <em>Systematic Biology</em> 57: 758−771. https://doi.org/10.1080/10635150802429642</p>
<p>Yamashiro, T., Tateishi, Y. & Maki, M. (2003) <em>Vincetoxieum yonakuniense</em>, a new combination of Asclepiadaceae and its new distribution record on Senkaku Islands, Ryuky Archipelago. <em>Acta Phytotaxonomica et Geobotanica</em> 54 (1): 31–36.</p>
<p>Wolf, N.M. (1776) <em>Genera plantarum: vocabulis characteristicis definita</em>. Müller, Dantisci, 178 pp.</p>
<p>Bunge, A. (1833) <em>Enumeratio Plantarum, quas in China boreali collegit.</em> Without publisher, St. Petersburg, 73 pp.</p>
<p>Chen, S.P., Tian, H.Z., Guan, Q.X., Zhai, J.W., Zhang, G.Q., Chen, L.J., Liu, Z.J., Lan, S.R. & Li, M.H. (2019) Molecular systematics of Goodyerinae (Cranichideae, Orchidoideae, Orchidaceae) based on multiple nuclear and plastid regions. <em>Molecular Phylogenetics and Evolution</em> 139: 106542. https://doi.org/10.1016/j.ympev.2019.106542</p>
<p>de Candolle, A.P. (1844) <em>Prodromus Systematis Naturalis Regni Vegetabilis</em>, vol. 8. Treuttel & Würtz, Paris, 684 pp.</p>
<p>Diels, L. (1905) Beiträge zur Flora des Tsin ling shan und andere Zusätze zur Flora von Central China. <em>Botanische Jahrbücher für Systematik, Pflanzengeschichte und Pflanzengeographie</em> 36 (Beibl. 82): 1–138.</p>
<p>Douglass, C.H., Weston, L.A. & DiTommaso, A. (2009) Black and pale swallow-wort (<em>Vincetoxicum nigrum</em> and <em>V. rossicum</em>): the biology and ecology of two perennial, exotic and invasive vines. <em>In</em>: Inderjit (Ed.) <em>Management of Invasive Weeds</em>. Springer, Netherland, pp. 261–277. https://doi.org/10.1007/978-1-4020-9202-2_13</p>
<p>Hatusima, S. (1977) A new species of<em> Cynanchum</em> from the Ryukyus. <em>Journal of Geobotany</em> 25: 26–27.</p>
<p>IUCN. (2020) <em>The IUCN Red List of Threatened Species, version 2020–1. </em>IUCN Red List Unit, Cambridge UK. Available from: http://www.iucnredlist.org (accessed 1 May 2021).</p>
<p>Jiang, L.Q., Li, Y.Y., Zhu, X.X., Wang, Y.H. & Peng, H. (2018) <em>Vincetoxicum xinpingense</em> (Asclepiadeae, Asclepiadoideae, Apocynaceae), a new species from Yunnan Province, China. <em>Phytotaxa</em> 361: 56–64. https://doi.org/10.11646/phytotaxa.361.1.4</p>
<p>Li, P.T., Gilbert, M.G. & Stevens, W.D. (1995) Asclepiadaceae. <em>In:</em> Wu, C.Y. & Raven (Eds.) <em>Flora of China</em>, vol. 16. Science Press, Beijing & Missouri Botanical Garden Press, St. Louis, pp. 189–270.</p>
<p>Liede, S. (1996) <em>Cynanchum</em> – <em>Rhodostegiella</em> – <em>Vincetoxicum</em> – <em>Tylophora</em>: new considerations on an old problem. <em>Taxon</em> 45: 193–211. https://doi.org/10.2307/1224660</p>
<p>Liede-Schumann, S., Kong, H.H., Meve, U. & Thiv, M. (2012) <em>Vincetoxicum</em> and <em>Tylophora</em> (Apocynaceae: Asclepiadoideae: Asclepiadeae)-two sides of the same medal: Independent shifts from tropical to temperate habitats. <em>Taxon</em> 61: 803–825. https://doi.org/10.1002/tax.614007</p>
<p>Linnaeus, C. (1753) <em>Species Plantarum</em>, vol. 1. Imprensis Laurentii Salvii, Holmiae, 560 pp.</p>
<p>Miller, M.A., Pfeiffer, W. & Schwartz, T. (2010) Creating the CIPRES Science Gateway for inference of large phylogenetic trees. <em>In</em>: <em>Proceedings of the Gateway Computing Environments Workshop</em>. New Orleans, pp. 1–8. https://doi.org/10.1109/GCE.2010.5676129</p>
<p>Qiu, S.X., Li, D.Z., Zhang, Z.X., Zhou, J. & Wu, C.Y. (1989) Chemotaxonomy of <em>Cynanchum</em> and its allied genera with notes on the generic characteristics of <em>Vincetoxicum</em>. <em>Acta Botanica Yunnanica</em> 11 (1): 41–50.</p>
<p>Ronquist, F. & Huelsenbeck, J.P. (2003) MrBayes 3: Bayesian phylogenetic inference under mixed models. <em>Bioinformatics</em> 19: 1572–1574. https://doi.org/10.1093/bioinformatics/btg180</p>
<p>Shah, S.A., Sultan, A., Wen, J., Ullah, Z., Un Nisa, S., Ren, Z., Alam, M.M., Iqbal, J. & Mumtaz, A.S. (2021) Taxonomy of <em>Vincetoxicum</em> s.str. (Asclepiadoideae, Apocynaceae) from southern Asia including three new species and resurrected names. <em>PhytoKeys</em> 179: 35–73. https://doi.org/10.3897/phytokeys.179.62514</p>
<p>Stamatakis, A., Hoover, P. & Rougemont, J. (2008) A rapid bootstrap algorithm for the RAxML web-servers. <em>Systematic Biology</em> 57: 758−771. https://doi.org/10.1080/10635150802429642</p>
<p>Yamashiro, T., Tateishi, Y. & Maki, M. (2003) <em>Vincetoxieum yonakuniense</em>, a new combination of Asclepiadaceae and its new distribution record on Senkaku Islands, Ryuky Archipelago. <em>Acta Phytotaxonomica et Geobotanica</em> 54 (1): 31–36.</p>
<p>Wolf, N.M. (1776) <em>Genera plantarum: vocabulis characteristicis definita</em>. Müller, Dantisci, 178 pp.</p>