Dendrobium leonis Rchb. f. 1864 SECTION Aporum Bl.
Photos by © Jay Pfahl
to 
Common Name The Lion-Like Dendrobium - In Thailand Ueang Takhap Yai
Flower Size .6 to .8" [1.3 to 2 cm]
Found in Thailand, penninsular Malaysia, Laos, Cambodia, Vietnam, Sumatra and Borneo in lowland forests at elevations of sea level to 1100 meters as a miniature to small sized, hot to cool growing epiphyte or occasional lithophyte on limestone cliffs with clustered, leafy, flattened stems that are completely enveloped by the many, distichous, succulent, alternating, triangular, overlapping, dark, imbricating, dull green leaves that blooms in the spring, summer and fall on an axillary, short, single flowered inflorescence arising at the apex of the imbricating canes with 1 to 2 fleshy, fragrant [vanilla] flowers.
Synonyms Aporum leonis Lindl. 1840; Callista leonis (Lindl.) Kuntze 1891
References W3 Tropicos, Kew Monocot list , IPNI ; A Century of Indian Orchids Vol 5 Hooker 1895 drawing fide; Materials For a Flora of the Malayan Penninsula Part 1 Ridley 1907; Orchidaceae Monandre-Dendrobiinae Fr. Kraenzlin 1910; Flora of Malaya Vol 1 Holttum 1953 drawing fide; The Orchids Thailand Seidenfaden & Smitinand 1960 drawing/photo good; The Orchids of Thailand Seidenfaden & Smitinand 1965 corrections; Miniature Orchids Northern 1980; Orchids of Asia Soon 1980; Opera Botanica #83 Orchid Genera in Thailand XII Dendrobium Sw. Seidenfaden 1985 drawing/photo fide; The Orchids of Penninsular Malaysia and Singapore Wood & Seidenfaden 1992 drawing/photo fide; Orchids of Malaya Segerback 1992 photo fide;Miniature Orchids McQueens 1992 photo fide; Thai Orchid Species Rakpaibulsombay 1992 photo fide; The Illustrated Encyclopedia of Orchids Pridgeon 1992 photo fide; The Manual Of Cultivated Orchid Species Bechtel, Cribb & Laurent 1992; A Checklist of the Orchids of Borneo Wood & Cribb 1994; Identification of the Orchids [Orchidaceae Juss.] Vietnam Averyanov 1994; Manual of Orchids Stewart 1995; Orchid Species Culture, Dendrobium Bakers 1996; Living with Orchids in Sumatra Landau 1996 photo fide; Dendrobium and their Relatives Lavarack, Harris and Stocker 2000 photo good; Orchids of Sumatra Comber 2001; Orchids of Sarawak Beaman, Wood, Beaman & Beaman 2001; A to Z of South East Asian Orchid Species Vol 1 O'Byrne 2001 photo fide; A field Guide to the Wild Orchids of Thailand Vaddhanaphuti 2001 photo good; A field Guide to the Wild Orchids of Thailand Vaddhanaphuti 2005 photo fide; The Dendrobiums H. P. Wood 2006 photo fide; Mille Et Une miniOrchidees Roguenant 2009 photo fide; AOS Bulletin Vol 78 No 1 2009 photo good to another flower?; Malesian Orchid Journal Vol 6 2010; 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; Dendrobium of Borneo Wood 2014 photo/drawing fide; AOS Bulletin Vol 86 #8 2017 photo fide;
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