Oncidium magdalenae Rchb.f. 1855 SECTION Rostrata Original Drawing by Padre Pedro Ortiz Conserved at the Herbario de la Universidad Javeriana, Bogota Colombia

Common Name The Rio Magdalena Oncidium [The Major Colombian River]

Flower Size .4 to .5" [1 to 1.2 cm]

Found in Colombia and Venezuela on the eastern cordillera in cloud forests at elevations around 2100 to 2500 meters as a miniature to small sized, cold growing epiphyte with a short rhizome, ovate, strongly compressed laterally, ancipitous pseudobulbs enveloped basally by imbricating, leaf bearing sheaths and carrying a single, leathery, lanceolate, acute, conduplicte towards the base into the short, petiolate-like base leaf that blooms on an axillary, paniculate, each branch 2 to 5 flowering, fractiflex, to 30" [75 cm] long, many flowered inflorescence that arises on a recently matured pseudobulb and carries both fertile and non-fertile, faintly fragrant flowers.

Synonyms Cyrtochilum magdalenae (Rchb.f.) Kraenzl. 1917; Oncidium diffusum C.Schweinf. 1951

References W3 Tropicos, Kew Monocot list , IPNI ; *Bonplandia Rchb.f 1855; Das Pflanzenreich Odontoglossum/Oncidium Kranzlin 1922 as Cyrtochilum magdalenae; Orquideas Nativas del Tachira Cesar Fernandez 2003 photo not = cyrtochilum?; Oncidium Vol 2 Koniger 2005 photo/drawing fide; Orchid Species Culture Odontoglossum/Oncidium Alliance Baker's 2006 as Cyrtochilum magdalenae