Abstract
A species new to science, Dendrobium ormerodii Handoyo, Naive & J.Champ. from Kalimantan, Borneo is herein described and illustrated. The species is superficially similar to D. fulminicaule but differs in having shorter stem, narrower leaf, dorsal sepal with acute apex, labellum without sidelobes or without the broadening at the base, labellum apex obtuse-truncate, and shorter column. Detailed description, a colour plate, line drawing, notes on phenology, distribution, and a conservation assessment are provided below.
References
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<p>Blume, C.L. (1825) <em>Bijdragen tot de Flora van nederlandsch Indie. </em>Lands Drukkerij: Batavia. https://doi.org/10.5962/bhl.title.115427</p>
<p>Brieger, F.G. (1981) Subtribus Dendrobiinae. <em>In:</em> Brieger, F.G., Maatsch, R. & Senghas, K. (Eds.) <em>Rudolf Schlechter, Die Orchideen: ihre Bescreibung, Kultur und Züchtung</em>, 3rd edn, Band 1, Teil A, Lieferung 11–12.</p>
<p>Comber, J.B. (1990) <em>Orchids of Java</em>. Royal Botanic Gardens, Kew. 1026 pp.</p>
<p>Comber, J.B. (2001) <em>Orchids of Sumatra</em>. Bentham-Moxon Trust, Royal Botanic Gardens, Kew. 407 pp.</p>
<p>Cootes, J. & Tiong, G. (2015) <em>A guide to Dendrobium of the Philippines</em>. Natural History Publications, Borneo.</p>
<p>IUCN Standards and Petitions Subcommittee (2019) G<em>uidelines for Using the IUCN Red List Categories and Criteria</em>. Version 14. Prepared by the Standards and Petitions Subcommittee. Available from: http://www.iucnredlist.org/documents/RedListGuidelines.pdf (accessed 18 April 2020)</p>
<p>Lavarack, B., Wayne, H. & Stocker, G. (2000) <em>Dendrobium</em> <em>and it’s Relatives</em>. Periplus Editions (HK) Ltd. 287 pp.</p>
<p>Lindley, J. (1830–1840) <em>Genera and species of Orchidaceous plants</em>. London: Ridgways, Piccadilly. https://doi.org/10.5962/bhl.title.499</p>
<p>Lindley, J. (1842) <em>Edwards’s botanical register Misc.</em> 28. London: James Ridgway, Piccadilly.</p>
<p>Lindley, J. (1872) <em>Gardener’s Chronicle and agricultural gazette.</em> 1872: 109.</p>
<p>O’Byrne, P. (1994) <em>Lowland Orchids of Papua New Guinea</em>. SNP Publisher Pte Ltd. Singapore. 375 pp.</p>
<p>Ormerod, P. (2017) <em>Checklist of Papuasian Orchids</em>. Nature & Travel Books, Lismore, Australia, 494 pp.</p>
<p>Reichenbach, H.G. (1878) Otia botanica Hamburgensia. Hamburgi. https://doi.org/10.5962/bhl.title.50465</p>
<p>Ridley, H.N. (1907) <em>Materials for a flora of the Malayan Peninsula, Part I</em>. Methodist Publishing House, Singapore. https://doi.org/10.5962/bhl.title.19701</p>
<p>Schuiteman, A. & Adams, P.B. (2014) <em>Dendrobium</em>.<em> In: </em>Pridgeon, M.A., Cribb, P.J., Chase, M.W. & Rasmussen, F.N. (eds.) <em>Genera orchidacearum, vol. 6. Epidendroideae </em>(Part three). Oxford: Oxford University Press.</p>
<p>Schumann, K. & Lauterbach, K. (1905) Nachträge zur Flora der deutschen Schutzgebiete in der Südsee: mit Ausschluss Samoa’s und der Karolinen. Leipzig. https://doi.org/10.5962/bhl.title.710</p>
<p>Smith, J.J. (1908) Nueu Orchideen des malaiischen Archipels, II. <em>Bulletin de Département de l’Agriculture aux Indes Néerlandaises. Buitenzorg</em> 15: 13.</p>
<p>Smith, J.J. (1917) Orchidaceae Novae Malayenses. VIII. <em>Bulletin du Jardin botanique de Buitenzorg</em>, ser. 2, 25: 51.</p>
<p>Swartz, O. (1799) Dendrobium. <em>Nova Acta Regiae Societatis Scientiarum Upsaliensis</em> Ser. 2, 6: 82–85.</p>
<p>Takamiya, T., Wongsawad, P., Sathapattayanon, A., Tajima, N., Suzuki, S., Kitamura, S., Shioda, N., Handa, T., Kitanaka, S., Iijima, H. & Yukawa, T. (2014) Molecular phylogenetics and character evolution of morphologically diverse groups, <em>Dendrobium</em> section <em>Dendrobium </em>and allies. <em>AoB Plants</em> 6: plu045. https://doi.org/10.1093/aobpla/plu045</p>
<p>Wood, J.J. (2014) <em>Dendrobium</em> <em>of Borneo</em>. Natural History Publications (Borneo), Kota Kinabalu. 946 pp.</p>