Oncidium bicolor Lindl.1843 SECTION Synsepala

Photo by Karl Senghas and the Swiss Orchid Foundation at the Jany Renz Herbaria Website

Common Name The Two-Colored Oncidium

Flower Size .8 to 1.2" [2 to 3 cm]

Found in Colombia?, Venezuela and Brazil? in the eastern coastal mountains at elevations of 1000 to 1220 meters as a miniature to small sized [plant only] cool growing epiphyte with ovate to elliptical, strongly laterally compressed, ancipitose pseudbulbs carrying 1 to 2, apical, lanceoalteacute, narrowing below intothe shortly petiolate base leaves that blooms on an axillary, almopst straight, erect, to arcuate to nodding, peduncle as long as the rachis, rachis 3 to 5 branched, the branches ascending to spreading, 32 to 45" [80 to 105 cm] long overall, each branch 2 to 7 flowered, the lowest branch with a short single, 2 to 3 flowered secondary branch, to 40 flowered inflorescence carrying non-fragrant flowers.

CAUTION Not to be confused with Cyrtochilum aureum (Lindl.) Senghas 1997 syn. Oncidium bicolor [Lindl.] Beer 1853, Oncidium bicolor Lindl.1843 with the photo above is a valid species.

Synonyms Ampliglossum bicolor (Lindl.) Campacci 2006; Coppensia bicolor (Lindl.) Campacci 2006; Gomesa bicolor (Lindl.) M.W.Chase & N.H.Williams 2009;

References <W3 Tropicos, Kew Monocot list , IPNI ; Das Pflanzanreich Regni Vegetabilis Conspectus Odontoglossum/Oncidium Kranzlin 1922; Venezuelan Orchids Illustrated Vol 3 Dunsterville & Garay 1965 drawing ok; Flora de Venezuela Volumen XV Part 5 Foldats 1970 drawing good; Orchids of Venezuela An Illustrated Field Guide Vol 2 Dunsterville & Garay 1979 drawing ok; Rudolf Schlechter Die Orchideen Band 1C lieferung 33 - 36 2057 - 2308 Brieger 1997 photo fide; Orchids of Venezuela [An illustrated field guide] Vol. 2 Ramiro and Carnevali 2000 drawing ok; The Pictoral Encyclopedia of Oncidium Zelenko 2002; Orquideologia Vol. 23 No 2 2004 drawing fide; Oncidium Vol 2 Koniger 2005 photo/drawing fide; Orchid Species Culture; Oncidium Bakers 2006;

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