Oncidium magdalenae Rchb.f. 1855 SECTION Rostrata

Photo by Wilibald Koniger


Drawing by Foldats

Another Drawing

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; Flora de Venezuela Volumen XV Part 5 Foldats 1970 as O diffusumOrquideas Nativas del Tachira Cesar Fernandez 2003 photo not = cyrtochilum?; Orquideologia Vol 23 #2 2004; Oncidium Vol 2 Koniger 2005 photo/drawing fide; Orchid Species Culture Odontoglossum/Oncidium Alliance Baker's 2006 as Cyrtochilum magdalenae