Skip to main content Skip to main navigation menu Skip to site footer
Responsive image
Issue: Vol. 564 No. 1: 14 September 2022
Type: Article
Published: 2022-09-14
DOI: 10.11646/phytotaxa.564.1.12
Page range: 133-138
Abstract views: 43
PDF downloaded: 1

Toxocarpus incarnatus (Apocynaceae, Secamonoideae), a new species from Thailand

Plants of Thailand Research Unit, Department of Botany, Faculty of Science, Chulalongkorn University, Pathumwan, Bangkok 10330, Thailand
ovoid-ellipsoid style-head pink-orange flower Ratchaburi province rusty pubescence Secamone Eudicots

Abstract

Toxocarpus incarnatus A. Kidyoo, newly described here, is a twining climber growing in disturbed evergreen forest in western Thailand. A diagnosis and detailed description of this new species, as well as photographs are provided. Several characters of T. incarnatus are compared with those of T. oblanceolatus, considered to be a close relative. These two species display consistent differences in leaf shape, flower color and characters of the style-head. In addition, a comparison with other species, T. concanensis and T. spirei, is also provided.

References

<p align="justify"><span style="color: #000000;"><span style="font-family: Times New Roman, serif;"><span style="font-size: small;"><span lang="en-GB"><em>El-Gazzar, A., Khattab, A.H., El-Saeid, A., El-Kady, A.A. (2018) Numerical taxonomy of the Asclepiadaceae </em></span><span lang="en-GB"><em>s.l</em></span><span lang="en-GB">. </span><span lang="en-GB"><em>Egyptian Journal of Botany</em></span><span lang="en-GB">: 58: 321–330. https://doi.org/10.21608/ejbo.2018.3035.1156</span></span></span></span></p>
<p align="justify"><span style="color: #000000;"><span style="font-family: Times New Roman, serif;"><span style="font-size: small;"><span lang="en-GB">Brown, R. (1810) Asclepiadeae. </span><span lang="en-GB"><em>In: Prodromus Florae Novae Hollandiae</em></span><span lang="en-GB">. J. Johnson &amp; Co., London, pp. 458–464.</span></span></span></span></p>
<p align="justify"><span style="color: #000000;"><span style="font-family: Times New Roman, serif;"><span style="font-size: small;"><span lang="en-GB">Costantin, J.N. (1912) Asclepiadacées. </span><span lang="en-GB"><em>In</em></span><span lang="en-GB">: Lecomte, H. (Ed.) </span><span lang="en-GB"><em>Flore Générale de l’Indochine </em></span><span lang="en-GB">4. Masson &amp; Cie/Muséum d’Histoire Naturelle, Paris, pp. 51.</span></span></span></span></p>
<p align="justify"><span style="color: #000000;"><span style="font-family: Times New Roman, serif;"><span style="font-size: small;"><span lang="en-GB">Endress, M.E., Liede-Schumann, S. &amp; Meve, U. (2014) An updated classification for Apocynaceae. </span><span lang="en-GB"><em>Phytotaxa</em></span><span lang="en-GB"> 159: 175–194. http://dx.doi.org/10.11646/phytotaxa.159.3.2</span></span></span></span></p>
<p align="justify"><span style="color: #000000;"><span style="font-family: Times New Roman, serif;"><span style="font-size: small;"><span lang="en-GB">Endress, M.E., Meve, U., Middleton, D.J. &amp; Liede-Schumann, S. (2018) Apocynaceae. </span><span lang="en-GB"><em>In</em></span><span lang="en-GB">: Kadereit, J.W. &amp; Bittrich, V. (Eds.) </span><span lang="en-GB"><em>The Families and Genera of Vascular Plants </em></span><span lang="en-GB">15. Springer International Publishing, Cham, pp. 207–411.</span></span></span></span></p>
<p align="justify"><span style="color: #000000;"><span style="font-family: Times New Roman, serif;"><span style="font-size: small;"><span lang="en-GB">Forster, P.I. (1991) A taxonomic revision of </span><span lang="en-GB"><em>Cynanchum</em></span><span lang="en-GB"> L. (Asclepiadaceae: Asclepiadoideae) in Australia. </span><span lang="en-GB"><em>Austrobaileya</em></span><span lang="en-GB"> 3: 443–466.</span></span></span></span></p>
<p align="justify"><span style="color: #000000;"><span style="font-family: Times New Roman, serif;"><span style="font-size: small;"><span lang="en-GB">Hooker, J.D. (1883) Asclepiadaceae. </span><span lang="en-GB"><em>In</em></span><span lang="en-GB">: Hooker, J.D. (Ed.) </span><span lang="en-GB"><em>Flora of British India</em></span><span lang="en-GB"> 4. L. Reeve &amp; Co., London, pp. 14.</span></span></span></span></p>
<p align="justify"><span style="color: #000000;"><span style="font-family: Times New Roman, serif;"><span style="font-size: small;"><span lang="en-GB">Kerr, A.F.G. (1938) </span><span lang="en-GB"><em>Toxocarpus oblanceolatus</em></span><span lang="en-GB"> Kerr. </span><span lang="en-GB"><em>In:</em></span> <span lang="en-GB"><em>Bulletin of Miscellaneous Information (Royal Botanic Gardens, Kew) </em></span><span lang="en-GB">1938: 450. https://doi.org/10.2307/4113447</span></span></span></span></p>
<p align="justify"><span style="color: #000000;"><span style="font-family: Times New Roman, serif;"><span style="font-size: small;"><span lang="en-GB">Klackenberg, J. (1992) Taxonomy of </span><span lang="en-GB"><em>Secamone</em></span><span lang="en-GB"> (Asclepiadaceae) in Asia and Australia. </span><span lang="en-GB"><em>Kew Bulletin</em></span><span lang="en-GB"> 47: 595–612. https://doi.org/10.2307/4110697</span></span></span></span></p>
<p align="justify"><span style="color: #000000;"><span style="font-family: Times New Roman, serif;"><span style="font-size: small;"><span lang="en-GB">Klackenberg, J. (1995) Taxonomy and phylogeny of the SE Asian genus </span><span lang="en-GB"><em>Genianthus</em></span><span lang="en-GB"> (Asclepiadaceae). </span><span lang="en-GB"><em>Botanische Jahrbücher</em></span><span lang="en-GB"> 117: 401–467.</span></span></span></span></p>
<p align="justify"><span style="color: #000000;"><span style="font-family: Times New Roman, serif;"><span style="font-size: small;"><span lang="en-GB">Klackenberg, J. (2001) Notes on Secamonoideae (Apocynaceae) in Africa. </span><span lang="en-GB"><em>Adansonia </em></span><span lang="en-GB">ser. 3, 23: 317–335.</span></span></span></span></p>
<p align="justify"><span style="color: #000000;"><span style="font-family: Times New Roman, serif;"><span style="font-size: small;"><span lang="en-GB">Klackenberg, J. (2004) A new species of </span><span lang="en-GB"><em>Secamone</em></span><span lang="en-GB"> (Apocynaceae, Secamonoideae) from Borneo. </span><span lang="en-GB"><em>Blumea</em></span><span lang="en-GB"> 49: 129–133. https://doi.org/10.3767/000651904X486232</span></span></span></span></p>
<p align="justify"><span style="color: #000000;"><span style="font-family: Times New Roman, serif;"><span style="font-size: small;"><span lang="en-GB">Klackenberg, J. (2006) Four new species of </span><span lang="en-GB"><em>Secamone</em></span><span lang="en-GB"> (Apocynaceae, Secamonoideae) from Indonesia. </span><span lang="en-GB"><em>Blumea</em></span><span lang="en-GB"> 51: 587–597. https://doi.org/10.3767/000651906X622148</span></span></span></span></p>
<p align="justify"><span style="color: #000000;"><span style="font-family: Times New Roman, serif;"><span style="font-size: small;"><span lang="en-GB">Klackenberg, J. (2010) New species and combinations of </span><span lang="en-GB"><em>Secamone</em></span><span lang="en-GB"> (Apocynaceae, Secamonoideae) from South East Asia. </span><span lang="en-GB"><em>Blumea</em></span><span lang="en-GB"> 55: 231–241. https://doi.org/10.3767/000651910X540018</span></span></span></span></p>
<p align="justify"><span style="color: #000000;"><span style="font-family: Times New Roman, serif;"><span style="font-size: small;"><span lang="en-GB">Li, P.T., Gilbert, M.G. &amp; Stevens, W.D. (1995) Asclepiadaceae. </span><span lang="en-GB"><em>In</em></span><span lang="en-GB">: Wu, Z.Y. &amp; Raven, P.H. (Eds.) </span><span lang="en-GB"><em>Flora of China</em></span><span lang="en-GB">, vol. 16. Science Press, Beijing &amp; Missouri Botanical Garden, St. Louis, pp. 198–199.</span></span></span></span></p>
<p align="justify"><span style="color: #000000;"><span style="font-family: Times New Roman, serif;"><span style="font-size: small;"><span lang="en-GB">Livshultz, T., Middleton, D.J., Endress, M.E. &amp; Williams, J.K. (2007) Phylogeny of Apocynoideae and the APSA clade (Apocynaceae </span><span lang="en-GB"><em>s.l.</em></span><span lang="en-GB">). </span><span lang="en-GB"><em>Annals of the Missouri Botanical Garden </em></span><span lang="en-GB">94: 324–359. https://doi.org/10.3417/0026-6493(2007)94[324:POAATA]2.0.CO;2</span></span></span></span></p>
<p align="justify"><span style="color: #000000;"><span style="font-family: Times New Roman, serif;"><span style="font-size: small;"><span lang="en-GB">Rodda, M. &amp; Middleton, D.J. (2019) Flora of Singapore precursors, 14. Notes on Apocynaceae. </span><span lang="en-GB"><em>Gardens’ Bulletin Singapore</em></span><span lang="en-GB"> 71: 69–80. https://doi.org/10.26492/gbs71(1).2019-04</span></span></span></span></p>
<p align="justify"><span style="color: #000000;"><span style="font-family: Times New Roman, serif;"><span style="font-size: small;"><span lang="en-GB">Schumann, K. (1895) Asclepiadaceae. </span><span lang="en-GB"><em>In</em></span><span lang="en-GB">: Engler, A. &amp; Prantl, K. (Eds.) </span><span lang="en-GB"><em>Die natürlichen Pflanzenfamilien </em></span><span lang="en-GB">4, 2. Engelmann, Leipzig, pp. 189–306.</span></span></span></span></p>
<p align="justify"><span style="color: #000000;"><span style="font-family: Times New Roman, serif;"><span style="font-size: small;"><span lang="en-GB">Thaithong, O., Kidyoo, A. &amp; Kidyoo, M. (2018) </span><span lang="en-GB"><em>Handbook of Asclepiads of Thailand</em></span><span lang="en-GB">. Amarin Printing and Publishing Public Company Limited, Bangkok, 326 pp.</span></span></span></span></p>
<p align="justify"><span style="color: #000000;"><span style="font-family: Times New Roman, serif;"><span style="font-size: small;"><span lang="en-GB">Tsiang, Y. (1939) Notes on the Asiatic Apocynales IV. </span><span lang="en-GB"><em>Sunyatsenia</em></span><span lang="en-GB"> 4: 31–94.</span></span></span></span></p>
<p align="justify"><span style="color: #000000;"><span style="font-family: Times New Roman, serif;"><span style="font-size: small;"><span lang="en-GB">Wight, R. (1834) </span><span lang="en-GB"><em>Contributions to the Botany of India</em></span><span lang="en-GB">. Parbury, Allen &amp; Co., London, 136 pp.</span></span></span></span></p>