Abstract
The new species, Bulbophyllum manhdatii (B. sect. Brachyantha) discovered in Da Lat Plateau, Lam Dong Province (southern Vietnam) is described here. This new species is close to B. pumilio but clearly differs in densely crowded pseudobulbs and their shape, shorter inflorescence, lateral sepals forming a narrow acute tube slightly flattened at the base, lip without median keel, and longer stelidia. In addition, a new national record, B. seidenfadenii, from the same section is also reported from the first time from North Vietnam.
References
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<p>Seidenfaden, G. (1973) Notes on <em>Cirrhopetalum</em> Lindl. <em>Dansk Botanisk Arkiv</em> 29 (1): 1–260.</p>
<p>Seidenfaden, G. (1979) Orchid genera in Thailand 8: <em>Bulbophyllum</em>. <em>Dansk Botanisk Arkiv</em> 33 (3): 1–228.</p>
<p>Hooker, J.D. (1886–1890) <em>Flora of British India</em> 5. Reeve, London, 910 pp.</p>
<p>Hu, A., Ye, D., Gale, S.W., Saunders, R.M.K., Fishcher, G.A. & Li., J. (2017) <em>Bulbophyllum jingdongense</em> (Orchidaceae), a new species in the <em>Cirrhopetalum</em> alliance from South China and Laos. <em>Phytotaxa</em> 307 (3): 199–204. https://doi.org/10.11646/phytotaxa.307.3.4</p>
<p>Kerr, A.D. (1973) <em>A new species – Bulbophyllum seidenfadenii.</em> <em>American Orchid Society Bulletin</em> 42: 411–412.</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>Lindley, J. (1830) Bulbophyllum.<em> In: </em>The genera and species of orchidaceous plants. Ridgways, London, pp. 47–58. https://doi.org/10.5962/bhl.title.499</p>
<p>Pingyot, T., Suksathan, P. & Inthakul, N. (2019) <em>Bulbophyllum seidenfadenii</em> (Orchidaceae), a new record for Thailand. <em>Thai Forest Bull., Bot.</em> 47 (2): 260–263. https://doi.org/10.20531/tfb.2019.47.2.15</p>
<p>Pridgeon, A.M., Cribb, P.J., Chase, M.W. & Rasmussen, F.N. (2014) <em>Genera orchidacearum Vol. 6. Epidendroideae (Part III)</em>. Oxford University Press, Oxford, 544 pp.</p>
<p>Reichenbach, H.G. (1861) Subclassis VIII. Gynandrae Endl. <em>Annales botanices systematicae</em> 6: 167–933.</p>
<p>Reichenbach, H.G. (1874) Enumeration of the orchids collected by the Rev. E.C.Parish in the neighbourhood of Moulmein, with descriptions of the new species. <em>Transactions of the Linnean Society</em> 30: 133–157. https://doi.org/10.1111/j.1096-3642.1874.tb00004.x</p>
<p>Seidenfaden, G. (1973) Notes on <em>Cirrhopetalum</em> Lindl. <em>Dansk Botanisk Arkiv</em> 29 (1): 1–260.</p>
<p>Seidenfaden, G. (1979) Orchid genera in Thailand 8: <em>Bulbophyllum</em>. <em>Dansk Botanisk Arkiv</em> 33 (3): 1–228.</p>