Abstract
Southwestern China is the centre of diversity of Petrocosmea (Gesneriaceae). Here, a new species, named Petrocosmea dejiangensis, from north-eastern Guizhou, China, is described. The new species is most similar to P. martini, but it is distinguished from the latter by two dark blue-purple stripes inside the corolla tube along its entire length, the anthers shorter than the filaments, and the stigma apex rounded. Three populations comprising approximately 120 mature individuals were found at and near the type locality. This new taxon was assessed as “Data Deficient” (DD), according to IUCN standards.
References
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<p>Siebold, P.F. (B.) V. & Zuccarini, J.G. (1843) <em>Platicaryn struhihicea</em> Sieb, et Zuccur. <em>Abhandlungen der Mathematisch-Physikalischen Klasse der Königlich Bayerischen Akademie der Wissenschaften</em> 3: 741–742.</p>
<p>Tang, S.H., Yang, J.W., Li, C.R. & Zhou, Q. (2021) <em>Petrocosmea duyunensis </em>(Gesneriaceae)<em>, </em>a new species from Guizhou, China. <em>PhytoKeys</em> 181: 1–8. https://doi.org/10.3897/phytokeys.181.68635</p>
<p>Wang, H.C., Zhang, L.B. & He, Z.R. (2013) <em>Petrocosmea melanophthalma</em>, a new species in section <em>Deianthera</em> (Gesneriaceae) from Yunnan, China. <em>Novon </em>22: 486–490. https://doi.org/10.3417/2011035</p>
<p>Wang, W.T. (1984) Notulae de gesneriaceae sinensibus (V). <em>Bulletin of Botanical Research</em> 4: 9–35.</p>
<p>Wang, W.T. (1985) The second revision of the genus <em>Petrocosmea</em> (Gesneriaceae). <em>Yunnan Zhi Wu Yan Jiu</em> 7: 49–68.</p>
<p>Wang, W.T., Pan, K.Y., Li, Z.Y., Weitzman, A.L. & Skog, L.E. (1998) <em>Petrocosmea</em>. <em>In</em>: Wu, Z.Y. & Raven, P.H. (eds.) <em>Flora of China</em> <em>Vol. 18</em> <em>(Gesneriaceae)</em>. Science Press, Beijing, and Missouri Botanical Garden Press, St. Louis, pp. 302–308.</p>
<p>Weber, A., Clark, J.L. & Möller, M. (2013) A new formal classification of Gesneriaceae. <em>Selbyana</em> 31: 68–94.</p>
<p>Wei, Y.G. & Wen, F. (2009) <em>Petrocosmea xingyiensis</em> (Gesneriaceae), a new species from Guizhou, China.<em> Novon</em> 19: 261–262. https://doi.org/10.3417/2007090</p>
<p>Wen, F. (2019) <em>Petrocosmea weiyigangii</em> (Gesneriaceae), a new species from a limestone cave in southern China. <em>Gardens’ Bulletin (Singapore)</em> 71: 175–183. https://doi.org/10.26492/gbs71(1).2019-11</p>
<p>Wen, F., Wei, Y.G., Fu, L.F., Xin, Z.B. & Ge, Y.Z. (2021) <em>The checklist of Gesneriaceae in China.</em> The Gesneriad Conservation Center of China. Available from: http://gccc.gxib.cn/cn/about-68.aspx (accessed 5 September 2021)</p>
<p>Xu, W.B., Pan, B. & Liu, Y. (2011) <em>Petrocosmea huanjiangensis</em>, a new species of Gesneriaceae from limestone areas in Guangxi, China. <em>Novon</em> 21: 385–387. https://doi.org/10.3417/2009101</p>
<p>Zhang, Q., Pan, B., Meng, T., Li, G.F., Xu, W.B. & Li, Z.M. (2013) <em>Petrocosmea funingensis </em>(Gesneriaceae): a new species from southeastern Yunnan, China. <em>Phytotaxa</em> 77: 5–8. https://doi.org/10.11646/phytotaxa.77.1.2</p>
<p>Zhao, H.T. & Shui, Y.M. (2010) <em>Petrocosmea shilinensis</em>, a new species of Gesneriaceae from Yunnan, China. <em>Yunnan Zhi Wu Yan Jiu</em> 32: 328–330. https://doi.org/10.3724/SP.J.1143.2010.10011</p>
<p>GRC (2021) <em>The RBGE Gesneriaceae Resource Centre.</em> Royal Botanic Garden, Edinburg, UK. Available from: https://padme.rbge.org.uk/grc/ (accessed 5 September 2021).</p>
<p>Han, M.Q., Lü, T.F. & Liu, Y. (2017) <em>Petrocosmea viridis</em>, a new species of <em>Petrocosmea</em> (Gesneriaceae) from Guizhou, China and supplementary and revised description of <em>P. minor</em>. <em>Nordic Journal of Botany</em> 36: e01566. https://doi.org/10.1111/njb.01566</p>
<p>Han, M.Q., Yuan, Q., Lü, T.F., Jiang, H. & Liu, Y. (2018)<em> Petrocosmea chrysotricha</em> sp. nov. (<em>Petrocosmea</em>, Gesneriaceae), a species previously mistaken for <em>P. begoniifolia</em> on marlstone cliffs in Yunnan, China. <em>Nordic Journal of Botany </em>2018: e01664. https://doi.org/10.1111/njb.01664</p>
<p>Han, M.Q., Yuan, Q., Lü, T.F., Zhang, L.B. & Liu, Y. (2019) <em>Petrocosmea qiruniae</em> (Gesneriaceae), a new species from Guizhou, China with supplementary data and revised description of <em>P. leiandra</em>. <em>Kew Bulletin</em> 74: 1–5. https://doi.org/10.1007/s12225-019-9811-8</p>
<p>Hemsley, W.B. (1891) <em>Lindera communis</em> Hemsl. <em>The Journal of the Linnean Society, Botany</em> 26: 387.</p>
<p>Hooker, W.J. (1899) <em>Hooker’s Icones Plantarum</em> <em>Vol. 26. </em>Longman<em>, </em>London<em>,</em> Plates 2599, 2600.</p>
<p>Huang, Z.J. & Xin, Z.B. (2021) <em>Petrocosmea adenophora</em> (Gesneriaceae), a new species from Yunnan, China. <em>Nordic Journal of Botany</em> 2021: e02944. https://doi.org/10.1111/njb.02944</p>
<p>IPNI (2021) <em>International Plant Names Index</em>. The Royal Botanic Gardens, Kew, Harvard University Herbaria & Libraries and Australian National Botanic Gardens. Available from: https://www.ipni.org/ (accessed 5 September 2021).</p>
<p>IUCN (2019) <em>Guidelines for using the IUCN Red List categories and criteria, Version 14</em>. Prepared by the Standards and Petitions Committee. Available from: https://www.iucnredlist.org/documents/RedListGuidelines.pdf (accessed 15 September 2021).</p>
<p>Jiang, H., Han, M.Q., Dong, Z., Han, Z.D. & Liu, Y. (2020) Two new species of <em>Petrocosmea</em> (Gesneriaceae) from Yunnan, China. <em>Nordic Journal of Botany</em> 12: e02847. https://doi.org/10.1111/njb.02847</p>
<p>Léveillé, H. (1903) <em>Vaniotia martini </em>Levi. <em>Bulletin de l’Académie Internationale de Géographie Botanique</em> 3: 166.</p>
<p>Léveillé, H. (1911) <em>Petrocosmea martini</em> Levi. <em>Repertorium Specierum Novarum Regni Vegetabilis </em>9: 329.</p>
<p>Li, X.W. (1983) Notulae de gesneraceis yunnanensibus. <em>Bulletin of Botanical Research </em>3: 18–27.</p>
<p>Li, C.Q., Lü, T.F., Han, M.Q., Dong, Y., Li, P.W., Liu, Y. & Wang, Y.Z. (2020) Reversal versus specialization in floral morphological evolution in <em>Petrocosmea</em> (Gesneriaceae). <em>Journal of Systematics and Evolution</em> 58: 145–158. https://doi.org/10.1111/jse.12541</p>
<p>Linnaeus, C. (1753) <em>Species Plantarum Vol. 2. </em>Salvius, Stockholm, pp 561–1200.</p>
<p>Oliver, D. (1887) <em>Petrocosmea sinensis</em> Oliv. <em>In</em>: Hooker, W.J. (ed.) <em>Hooker’s icones plantarum</em> <em>Vol. 18. </em>Longman<em>, </em>London<em>,</em> Plate 1716.</p>
<p>POWO (2021) <em>Plants of the World Online.</em> Facilitated by the Royal Botanic Gardens, Kew, UK. Available from: http://powo.science.kew.org/ (accessed 20 September 2021)</p>
<p>Qiu, Z.J. & Liu, Z.Y. (2015) Plants of <em>Petrocosmea</em> in China. Science Publishing House, Beijing, 116 pp.</p>
<p>Qiu, Z.J., Wang, X.L., Liu, Z.Y., Yang, J.F. & Zhang, S.Z. (2012) Cytological and phylogenetic study of <em>Petrocosmea hexiensis</em> (Gesneriaceae), a new species from Chongqing, China. <em>Phytotaxa</em> 74: 30–38. https://doi.org/10.11646/phytotaxa.74.1.2</p>
<p>Qiu, Z.J., Zhang, J., Baskaran, X.R., Hu, J., Li, Z.Y. & Liu, Z.Y. (2020) <em>Petrocosmea nanchuanensis</em> (Gesneriaceae), a new species from Chongqing, China. <em>PhytoKeys </em>157: 137–144. https://doi.org/10.3897/phytokeys.157.33625</p>
<p>Shaw, J. (2011) A new species of <em>Petrocosmea</em>. <em>Plantsman</em> 10: 177–179.</p>
<p>Siebold, P.F. (B.) V. & Zuccarini, J.G. (1843) <em>Platicaryn struhihicea</em> Sieb, et Zuccur. <em>Abhandlungen der Mathematisch-Physikalischen Klasse der Königlich Bayerischen Akademie der Wissenschaften</em> 3: 741–742.</p>
<p>Tang, S.H., Yang, J.W., Li, C.R. & Zhou, Q. (2021) <em>Petrocosmea duyunensis </em>(Gesneriaceae)<em>, </em>a new species from Guizhou, China. <em>PhytoKeys</em> 181: 1–8. https://doi.org/10.3897/phytokeys.181.68635</p>
<p>Wang, H.C., Zhang, L.B. & He, Z.R. (2013) <em>Petrocosmea melanophthalma</em>, a new species in section <em>Deianthera</em> (Gesneriaceae) from Yunnan, China. <em>Novon </em>22: 486–490. https://doi.org/10.3417/2011035</p>
<p>Wang, W.T. (1984) Notulae de gesneriaceae sinensibus (V). <em>Bulletin of Botanical Research</em> 4: 9–35.</p>
<p>Wang, W.T. (1985) The second revision of the genus <em>Petrocosmea</em> (Gesneriaceae). <em>Yunnan Zhi Wu Yan Jiu</em> 7: 49–68.</p>
<p>Wang, W.T., Pan, K.Y., Li, Z.Y., Weitzman, A.L. & Skog, L.E. (1998) <em>Petrocosmea</em>. <em>In</em>: Wu, Z.Y. & Raven, P.H. (eds.) <em>Flora of China</em> <em>Vol. 18</em> <em>(Gesneriaceae)</em>. Science Press, Beijing, and Missouri Botanical Garden Press, St. Louis, pp. 302–308.</p>
<p>Weber, A., Clark, J.L. & Möller, M. (2013) A new formal classification of Gesneriaceae. <em>Selbyana</em> 31: 68–94.</p>
<p>Wei, Y.G. & Wen, F. (2009) <em>Petrocosmea xingyiensis</em> (Gesneriaceae), a new species from Guizhou, China.<em> Novon</em> 19: 261–262. https://doi.org/10.3417/2007090</p>
<p>Wen, F. (2019) <em>Petrocosmea weiyigangii</em> (Gesneriaceae), a new species from a limestone cave in southern China. <em>Gardens’ Bulletin (Singapore)</em> 71: 175–183. https://doi.org/10.26492/gbs71(1).2019-11</p>
<p>Wen, F., Wei, Y.G., Fu, L.F., Xin, Z.B. & Ge, Y.Z. (2021) <em>The checklist of Gesneriaceae in China.</em> The Gesneriad Conservation Center of China. Available from: http://gccc.gxib.cn/cn/about-68.aspx (accessed 5 September 2021)</p>
<p>Xu, W.B., Pan, B. & Liu, Y. (2011) <em>Petrocosmea huanjiangensis</em>, a new species of Gesneriaceae from limestone areas in Guangxi, China. <em>Novon</em> 21: 385–387. https://doi.org/10.3417/2009101</p>
<p>Zhang, Q., Pan, B., Meng, T., Li, G.F., Xu, W.B. & Li, Z.M. (2013) <em>Petrocosmea funingensis </em>(Gesneriaceae): a new species from southeastern Yunnan, China. <em>Phytotaxa</em> 77: 5–8. https://doi.org/10.11646/phytotaxa.77.1.2</p>
<p>Zhao, H.T. & Shui, Y.M. (2010) <em>Petrocosmea shilinensis</em>, a new species of Gesneriaceae from Yunnan, China. <em>Yunnan Zhi Wu Yan Jiu</em> 32: 328–330. https://doi.org/10.3724/SP.J.1143.2010.10011</p>