Dendrobium setifolium Ridl.1896 SECTION Crumenata
Photo by © Seidenfaden
Photo by © Orchidenthusia Website
Photo by © The Orchids Flowers .com Website
Photos by © Art Vogel
Common Name The Rough Leafed Dendrobium
Flower Size .7" [1.8 cm]
Found in Thailand, Malaysia, Borneo and Sumatra in lower montane forests at elevations of 1300 to 1600 meters as a small to medium sized, cool growing epiphyte with clustered, basally shortly slender, swelling to almost round medially and then thinning out again towards the very elongate apex cane carrying 4 to 8, widely spaced, slender, terete, channeled leaves that blooms on a very short, single flowered inflorescence arising from the middle to the apex of the cane and have flowers that are non-resupinate, short-lived and do not open well.
CAUTION There are a few descrepancies in this determination so I await more information. The first, second and third photos seem to be the most correct and correlates to photos within other references. The third and fourth photo has an entire lip with no eroseness and is not bilobed which the Drawing by Seidenfaden does show. Also, although Seidenfaden shows a callosity on the midlobe of the lip it is not as prominent and does not seem to have the height of structure and the margin is dentate instead of entire.
D grootingsii and D setifolium are very close and may turn out to be conspecific, I await new research to confirm or deny this. If they are conspecific then D setifolium takes precedence.
Synonyms Aporum setifolium (Ridl.) Rauschert 1983; Ceraia setifolia (Ridl.) M.A.Clem. 2003
References W3 Tropicos, Kew Monocot list , IPNI ; Flora Of Malaya Vol 1 Holttum 1953; The Orchids of Thailand Seidenfaden & Smitinand 1960 pg not = D aciculare; Opera Botanica #83 Orchid Genera in Thailand XII Dendrobium Sw. Seidenfaden 1985 drawing/photo fide; The Orchids of Penninsular Malaysia and Singapore Seidenfaden & Wood 1992 drawing good; The Plants of Mount Kinabalu Vol 2 Orchids Wood Beaman & Beaman 1993; A Checklist of the Orchids of Borneo Wood & Cribb 1994; Orchid Species Culture Dendrobium Bakers 1996; Orchids of Sumatra Comber 2001 photo ok; Orchids of Sarawak Beaman & Wood 2001 photo ok; A field Guide to the Wild Orchids of Thailand Vaddhanaphuti 2005 photo good; The Dendrobiums H. P. Wood 2006 photo hmm; The Orchids of Mount Kinabalu Vol 2 Wood, Beaman, Lamb, Chu Lun and Beaman 2011 drawing/photo fide; Wild Orchids of Penninsular Malaysia Ong, O'Byrne, Yong & Saw 2011 photo fide; Turczaninowia 16(4):26-46 NEW AND RARE ORCHIDS (ORCHIDACEAE) IN THE FLORA OF CAMBODIA AND LAOS Averyanov 2013 photgood; Malesian Orchid Journal Vol 10 2012; Dendrobium of Borneo Wood 2014 photo/drawing fide
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