Coelogyne rochussenii de Vriese 1854 SECTION Tomentosae Pfitzer & Kraenzlin
Photo by Donald G. H. Tan
Photos by © Eric Hunt
Photos by © Milan Vágner
To 
Common Name Rouchussen's Coelogyne [Dutch governor-general of the Dutch East Indies in the mid-19th century ]
Flower Size 2 1/2" [6.25 cm]
Found in Malaysia, Borneo, Java and Sumatra and east to the Philippines in lowlands often on trees overhanging rivers at elevations up to 1500 meters as a medium sized, hot to cool growing epiphyte and occasional lithophyte with 3.4 to 1.4" between each, cylindric, narrow, strongly furrowed pseudobulb carrying 2, oblanceolate to obovate, rounded and slightly acuminate, gradually narrowing below into the 2" [5 cm] long, petiolate base leaves and blooms in the winter in Singapore cultivation on a basal, heteranthous, to more than 1 1/2' [45 cm] long, pendant, racemose inflorescence arising on a mature pseudobulb with brown basal bracts with up to 40 fragrant, lemon-scented, simultaneously opening flowers. The flowers semi-close each night and reopen in the morning with the sun's arrival.
Synonyms Chelonanthera cymbidioides Teijsm. ?; Coelogyne macrobulbon Hook. f. 1890; Coelogyne plantaginea Lindl. 1855; Coelogyne steffensii Schltr. 1925; Coelogyne stellaris Rchb.f. 1886; Pleione macrobulbon (Hook.f.) Kuntze 1891; Pleione plantaginea (Lindl.) Kuntze 1891; Pleione rochussenii (de Vriese) Kuntze 1891
References W3 Tropicos, Kew Monocot list , IPNI ; Xenia Orchidaceae Rchb.f 1854 drawing fide; Bonplandia Rchb.f 1857; Die Orchideen Von Java J.J.Smith 1905; Die Orchideen Von Java Figuren Atlas J.J.Smith 1908 drawing fide; Studies in the Family Orchidaceae Fascile 5 Ames 1915; Die Orchideen Schlechter 1915; Studies in the Family Orchidaceae Fascile 6 Ames 1920; Flora of Malaya Vol 1 Holttum 1957 drawing ok; The Orchids of Thailand Seidenfaden & Smitinand 1959 Drawing fide; AOS Bulletin Vol 32 No 5 1963; Encyclopedia of Cultivated Orchids Hawkes 1965; Dansk Botanisk Arkiv Bind 29 N.R. 4 Orchid Genera in Thailand III Seidenfaden 1975 drawing fide; The Complete Writings on Philippine Orchids Vol 2 Quisumbing 1981; Orchidiana Philipiniana Vol 1 Valmayor 1984; Orchids of Java Comber 1990 photo fide; Orchids Travel By Air A Pictoral Safari Mulder, Mulder-Roelfsema and Schuiteman 1990 photo fide; The Manual of Cultivated Orchids Bechtel, Cribb, Launert 1992 drawing/photo fide; The Orchids of Penninsular Malaysia and Singapore Seidenfaden & Wood 1992 drawing/photo fide; Orchid Monographs Vol 6 de Vogel 1992 drawing/photo fide; AOS Bulletin Vol 62 No 11 1993 photo fide; The Plants of Mount Kinabalu Vol 2 Orchids Wood Beaman & Beaman 1993 photo fide; A Checklist of the Orchids of Borneo Wood & Cribb 1994 drawing ok; Orchids of Sumatra Comber 2001 photo fide; A to Z of South East Asian Orchid Species Vol 1 O'Byrne 2001 photo fide; The Orchids of the Philippines Cootes 2001 photo fide; Orchids of Sarawak Wood & Beaman Etal 2001; The Genus Coelogyne A Synopsis Clayton 2002 photo fide; Lindleyana Vol 17 No 1 2002; Flora Malesiana Orchids of the Philippines Vol I Agoo, Shuiteman and de Vogel 2003; Australian Orchid Review Vol 69 No 1 2004 photo; AOS Bulletin Vol 73 No 3 2004; Orchid Digest Vol 72 #2 2008 photo fide; AOS Bulletin vol 78 No 8 2009 photo fide; Philippine Native Orchid Species Cootes 2011 photo fide; Malesian Orchid Journal Vol 7 2011; The Orchids of Mount Kinabalu Vol 1 Wood, Beaman, Lamb & Lun 2011 photo fide; 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; Les Coelogynes E & J George 2011 photo fide; Of Men and Orchids Part 1 Jenny drawing/photo fide;
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