Oncidium ascendens Lindley 1842 SECTION Cebolletae
Photos courtesy of Jay Pfahl
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Common Name The Climbing Oncidium
Flower Size 3/4"
This large sized, hot to warm pendulous growing, terete-leafed plant was collected in Belize but they can be found as epiphytes with an ascending simple or branched raceme with small, successively opening flowers on trees in swamps, open mountain forests, pastures and coffee plantations up to an elevation of 1500 meters in all of Central America, Colombia and the West Indies. Please note that while the plant is pendant growing the inflorescence is basically erect to lateral so mount on treefern or wood accordingly, give bright light, high humidity and year round water with less when mature. This orchid has small inconspicuous pseudobulbs carrying a single, apical, terete, thick-fleshy, long leaf and blooms in the spring on an erect to lateral, racemose, to 6" [15 cm] long, several to many flowered, racemose inflorescence arising on a mature pseudobulb.
Synonyms Cohnia quekettioides Rchb.f. 1852; Cohniella ascendens (Lindl.) Christenson 1999; Cohniella bolivianensis ( Oppenheim ) Senghas 2001; Cohniella quekettioides (Rchb.f.) Pfitzer 1889; Oncidium bolivianense Oppenheim 1916; Oncidium helicanthum Kraenzl. 1922; Oncidium subulifolium Schltr. 1922; Stilifolium ascendens (Lindl.) Koniger & Pongr. 1997; Trichocentrum ascendens (Lindl.) M.W.Chase & N.H.Williams 2001
References W3 Tropicos, Kew Monocot list , IPNI ; Lankester's Epidendra Website CR ; Xenia Orchidaceae Rchb.f 1858 as Cohnia quekettioides drawing fide; *Repert. Sp. Nov. Regni. Veg. Beih. 19: 150 Costa Rica Schlechter 1923; Symbolae Antillanae Vol VI Orchidaceae Urban 1909; AOS Bulletin Vol 30 No 9 1961; Icones Planetarum Tropicarum plate 564 Dodson 1982 as Onc bolivianese; Icones Planetarum Tropicarum plate 896 Dodson 1983; Fieldiana Biology, Flora Costa Ricensis Family # 39 Orchidaceae, subtribes Maxillariinae and Oncidiinae Atwood & Mora 1997; Lindleyana Vol 16 No 2 2001 as Trichocentrum ascendens; Orchid Species Culture: Oncidium, Bakers 2006 as Cohniella ascendens; The Pictoral Encyclopedia of Oncidium Zelenko 2002 as Trichocentrum ascendens; Orquideologia Vol. 23 No 2 2004; Vanishing Beauty; Native Costa Rican Orchids Vol 1 Pupulin 2005 as Cohniella ascendens; AOS Bulletin Vol 76 No 3 2007 photo as Cohniella ascendens
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