Abstract
Cleisostoma luopingense, a new species of Orchidaceae, is described and illustrated from Yunnan Province, China. It is morphologically similar to C. williamsonii, but can be easily distinguished from the latter in having unbranched inflorescence and laxly placed 6–10 flowers; elliptic petals (size: 3.0–3.2 × 1.8–2.0 mm); back wall callus of spur yellow, T-shaped and mid-lobule deeply bilobed at base, column without stelidia.
References
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<p>Wang, F.S., Wen, T.L., Niu, M. & Li, L. (2014) A new record of <em>Cleisostoma </em>(Orchidaceae) from China. <em>Guihaia </em>35: 282–284.</p>
<p>Zou, L.H., Huang, J.X., Zhang, G.Q., Liu, Z.J. & Zhuang, X.Y. (2015) A molecular phylogeny of Aeridinae (Orchidaceae: Epidendroideae) inferred from multiple nuclear and chloroplast regions. <em>Molecular Phylogenetics and Evolution</em> 85: 247–254. https://doi.org/10.1016/j.ympev.2015.02.014</p>
<p>Chen, S.C., Wood, J.J. <em>Cleisostoma</em> Blume. (2009) Orchidaceae. <em>In: </em>Wu, Z.Y., Peter, R.H. & Hong, D. (Eds.) <em>Flora of China</em>. Vol. 25<em>. </em>Sciences Press, Beijing & Missouri Botanical Garden Press, St. Louis, 458 pp.</p>
<p>Govaerts, R., Campacci, M.A., Baptista, D.H., Cribb, P.J., George, A., Kreutz, K. & Wood, J.J. (2021) World checklist of Orchidaceae. Royal Botanic Gardens, Kew. Available from: http://wcsp.science.kew.org/ (accessed 10 April 2021)</p>
<p>Huang, M..Z., Liu, D.K., Yin, J.M. & Yang, G.S. (2020) <em>Cleisostoma hainanense</em>, a new species (Orchidaceae: Epidendroideae) from Hainan, China: evidence from morphological and DNA analyses. <em>Phytotaxa</em> 428 (3): 263–270. https://doi.org/10.11646/phytotaxa.428.3.7</p>
<p>Kumar, P., Gale, S.W., Pedersen, H.Æ., Phaxaysombath, T., Bouamanivong, S. & Fischer, G.A. (2018) Additions to the orchid flora of Laos and taxonomic notes on orchids of the Indo-Burma region. <em>Taiwania</em> 63 (1): 61–83.</p>
<p>Pridgeon, A.M., Cribb, P.J., Chase, M.W. & Rasmussen, F.N. (2014) <em>Genera Orchidacearum Volume 6: Epidendroideae</em>. Oxford University Press, Oxford, pp. 229–230.</p>
<p>Qin, Y., Yuan, Q. & Meng, T. (2018) <em>Cleisostoma tricornutum </em>Averyanov, a newly recorded species of <em>Cleisostoma </em>(Orchidaceae) from China. <em>Journal of Tropical and Subtropical Botany </em>26 (3): 293–295.</p>
<p>Seidenfaden, G. (1975) Orchid genera in Thailand, 2: <em>Cleisostoma </em>Bl. <em>Dansk Botanisk Arkiv </em>29: 1–80.</p>
<p>Tsi, Z.H. (1983) A revision of the genus <em>Cleisostoma</em> in China. <em>Bulletin of Botanical Research</em> 3 (4): 71–86.</p>
<p>Topik,T., Yukawa, T. & Ito, M. (2005) Molecular phylogenetics of subtribe Aeridinae (Orchidaceae): insights from plastid mat<em>K</em> and nuclear ribosomal <em>ITS</em> sequences. <em>Journal of Plant Research </em>18: 271–284. https://doi.org/10.1007/s10265-005-0217-3</p>
<p>Wang, F.S., Wen, T.L., Niu, M. & Li, L. (2014) A new record of <em>Cleisostoma </em>(Orchidaceae) from China. <em>Guihaia </em>35: 282–284.</p>
<p>Zou, L.H., Huang, J.X., Zhang, G.Q., Liu, Z.J. & Zhuang, X.Y. (2015) A molecular phylogeny of Aeridinae (Orchidaceae: Epidendroideae) inferred from multiple nuclear and chloroplast regions. <em>Molecular Phylogenetics and Evolution</em> 85: 247–254. https://doi.org/10.1016/j.ympev.2015.02.014</p>