Oncidium ascendens Lindley 1842 SECTION Cebolletae

Photo by W. Cetzal-Ix and Harvard Papers in Botany Vol 21 #2 Cetzal-Ix Carnevalli and Romero-Gonzalez 2016 Synopsis of the Trichocentrum Clade

Another Flower

Inflorescence

Flower closeup

Plant In situ Belize

Photos by Jay Pfahl

Part shade Hot to CoolSpringandSummer

Common Name The Climbing Oncidium

Flower Size 3/4"

Found in Mexico, Belize, Guatemala, Honduras, El Salvador, Nicaragua, Costa Rica and Panama on trees in swamps, open mountain forests, pastures and coffee plantations at elevations of 300 to 1500 meters as large sized, hot to cool, pendulous growing, terete-leafed epiphyte with 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.

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.

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 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; Die Orchideen Schlechter 1915 as Cohniella quekettioides; Das Pflanzenreich Odontoglossum/Oncidium Kranzlin 1922 drawing ok; Das Pflanzenreich Odontoglossum/Oncidium Kranzlin 1922 as O bolivianense; Das Pflanzenreich Odontoglossum/Oncidium Kranzlin 1922 as O helicanthum 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; Encyclopedia of Cultivated Orchids Hawkes 1965 as Cohniella quekettioides; Las Orquedias De El Salvador Vol 2 Hamer 1974 drawing/photo fide; Las Orquedias de El Salvador Vol 3 Hamer 1981 drawing ok; Icones Planetarum Tropicarum plate 564 Dodson 1982 as Onc bolivianese drawing fide; Icones Planetarum Tropicarum plate 896 Dodson 1983 drawing fide; An Introdution to the Orchids of Mexico Wiard 1987 photo fide; Orchids Travel By Air A Pictoral Safari Mulder, Mulder-Roelfsema and Schuiteman 1990 photo fide; Fieldiana Biology, Flora Costa Ricensis Family # 39 Orchidaceae, subtribes Maxillariinae and Oncidiinae Atwood & Mora 1999 drawing fide; Rudolf Schlechter Die Orchideen Band 1C lieferung 33 - 36 2057 - 2308 Brieger 1997 as O boliviense; Rudolf Schlechter Die Orchideen Band 1C lieferung 33 - 36 2057 - 2308 Brieger 1997; Lindleyana Vol 16 No 2 2001 as Trichocentrum ascendens; Rudolf Schlechter Die Orchideen Band 1C lieferung 44-45 pg 2763 - 2898 Brieger 2001 as Cohniella ascendens; Rudolf Schlechter Die Orchideen Band 1C lieferung 44-45 pg 2763 - 2898 Brieger 2001 as Cohniella bolivianense; The Pictoral Encyclopedia of Oncidium Zelenko 2002 as Trichocentrum ascendens; Manual de Plantas de Costa Rica Vol 3 Hammel, Grayum, Herrera and Zamora 2003; Orquideologia Vol. 23 No 2 2004 photo fide; Vanishing Beauty, Native Costa Rican Orchids Vol 1 Pupulin 2005 as Cohniella ascendens photo fide; Orchid Species Culture: Oncidium, Bakers 2006 as Cohniella ascendens; AOS Bulletin Vol 76 No 3 2007 as Cohniella ascendens photo fide; J. Torrey Bot. Soc. 137: 198 Cetzal & Carnevali 2010 as Cohniella ascendens drawing fide; Orchid Digest Vol 77 #4 2013 photo fide; Guia de Orquideas de Chiapas Carlos Rommel Beutelspacher Baigts 2013 as Trichocentrum ascendens photo fide; Lankesteriana 12[3]: 207 - 214 Romero 2014 as Cohniella ascendens photo fide; Orchid Digest Vol 80 #1 2016 as Trichocentrum ascendens photo fide; Harvard Papers in Botany Vol 21 #2 Cetzal-Ix Carnevalli and Romero-Gonzalez 2016 Synopsis of the Trichocentrum Clade as Cohniella ascendens photo fide; AOS Bulletin Vol 86 # 11 2017 as Trichocentrum ascendens photo fide;

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