Coelogyne rochusseni de Vriese 1854 SECTION Tomentosae Pfitzer & Kraenzlin Photo by Donald G. H. Tan and Clackamas Orchids Home Page
Specimen Plant Photos by © Eric Hunt and His Orchid Website
Side View Of Flower Photos by © Milan Vágner
To 
Common Name Rouchussen's Coelogyne [Wife of M Rousseau French Orchid Enthusiast 1800's]
Flower Size 2 1/2" [6.25 cm]
This medium sized, hot to warm growing epiphyte and occasional lithophyte is 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 with 3.4 to 1.4" between each, cylindric, narrow, strongly furrowed pseudobulbs 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 and 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; Flora of Malaya Vol 1 Holttum 1957 drawing ok; The Orchids of Thailand Seidenfaden & Smitinand 1959 Drawing; AOS Bulletin Vol 32 No 5 1963; Encyclopedia of Cultivated Orchids Hawkes 1965; Orchidiana Philipiniana Vol 1 Valmayor 1984; Orchids of Java Comber 1990 photo fide; The Orchids of Penninsular Malaysia and Singapore Seidenfaden & Wood 1992 drawing/photo fide; AOS Bulletin Vol 62 No 11 1993 photo; 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; 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; 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
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