Oncidium cebolleta (Jacq.) Sw. 1800 SECTION Cebolletae Photo courtesy of Jay Pfahl

Part sun Hot to Cool LATEWinterSpring

Common Name The Onion Leaf Oncidium

Flower Size to 1 1/2" [to 4 cm]

This medium sized, hot to cool growing, caespitose, epiphytic species with terete, sulcate, erect or suberect, fleshy leaves and very small, tubular pseudobulbs that are subtended by large white sheaths and is found in the American tropics in seasonally dry or moist forests and is the most widespread Oncicium, is found at elevations of 150 to 1700 meters in elevation in xerophytic conditions where it blooms in the late winter and spring with a basal, arcuate, 2 1/2' [75 cm] long, simple or short branched, multi-flowered raceme arising on a newly matured pseudobulb.

This pendulous to lateral growing orchid needs to be mounted on tree fern or wood and likes high light and humidity and water while growing and less to none when mature. This plant was used by the precolumbian indians in central America as a type of hallucinogen, as to how I am not sure.

Synonyms Cohniella cebolleta (Jacq.) Christenson 1999; Cymbidium juncifolium Willd. 1805; Dendrobium cebolleta Jacq. 1760 [erroneous]; *Epidendrum cebolleta Jacq. 1760; Epidendrum juncifolium L. 1763; Oncidium brachyphyllum Lindl. 1842; Oncidium cebolleta var. purum L.C.Menezes 1991; Oncidium cepula Hoffmanns. 1843; Oncidium glaziovii Cogn. 1906; Oncidium longifolium Lindl. 1841; Oncidium sepula Hoffmanns. 1843; Oncidium sprucei Lindley 1855; Oncidium ultrajectinum Pulle 1907; Stilifolium cebolleta (Jacq.) Koniger & Pongr. 1997; Trichocentrum cebolleta (Jacq.) M.W.Chase & N.H.Williams 2001; Trichocentrum sprucei (Lindl.) M.W.Chase & N.H.Williams 2001;

References W3 Tropicos, Kew Monocot list , IPNI ; Lankester's Epidendra Website CR ; Symbolae Antillanae Vol VI Orchidaceae Urban 1909; Die Orchideen Schlechter 1915; Atlas des Orchidees Cultivees Constantin 1920 drawing fide; Das Pflanzenreich Odontoglossum/Oncidium Kranzlin 1922; Das Pflanzenreich Odontoglossum/Oncidium Kranzlin 1922 as O glaziovii; Das Pflanzenreich Odontoglossum/Oncidium Kranzlin 1922 as O longifolium; Das Pflanzenreich Odontoglossum/Oncidium Kranzlin 1922 as O bolivianense; Flore Descriptive des Antilles Francaises H. Stehle 1939 drawing ok; Native Orchids of Trinidad Schultes 1960; AOS Bulletin Vol 30 No 9 1961; Venezuelan Orchids Illustrated Vol 2 Dunsterville & Garay 1961 drawing fide; Encyclopedia of Cultivated Orchids Hawkes 1965 as O longifolium; AOS Bulletin Vol 38 No 6 1969; Flora de Venezuela Foldats Volumen XV Part 5 1970 drawing fide; Flora of the Lesser Antilles Garay & Sweet 1974 drawing fide; Las Orquedias De El Salvador Vol 2 Hamer 1974 drawing/photo fide; Orchids of Venezuela An Illustrated Field Guide Vol 2 Dunsterville & Garay 1979 drawing fide; Las Orquedias de El Salvador Vol 3 Hamer 1981 drawing ok; Icones Planetarum Tropicarum plate 899 Dodson 1983 drawing fide; Flora Novo-Galaciana Vol 16 McVaugh 1985 as Oncidium cebolleta; The Orchids of Surinam Werkhoven 1986 photo fide; An Introdution to the Orchids of Mexico Wiard 1987 photo fide; Native Colombian Orchids Vol 3 COS 1991 photo fide; Schlechteriana Vol 1 No 4 1991 as O cebolleta var purum; Icones Planetarum Tropicarum plate 1467 Atwood 1992 drawing fide; Fieldiana Biology, Flora Costa Ricensis Family # 39 Orchidaceae, subtribes Maxillariinae and Oncidiinae Atwood & Mora 1997; Rudolf Schlechter Die Orchideen Lieferung 33-6 1997; Orchids of Venezuela [An illustrated field guide] Vol. 1 Ramiro and Carnevali 2000 as Cohniella cebolleta drawing fide; Lindleyana Vol 16 No 2 2001 as Trichocentrum cebolleta; Lindleyana Vol 16 No 3 2001 as Trichocentrum sprucei; Orquideas Nativas del Tachira Cesar Fernandez 2003 as Cohniella cebolleta photo fide; Flora of the Venezuelan Guayana Vol 7 Steyermark, Berry, Yatskievych and Holst 2003 as Trichocentrum cebolleta; Orquideologia Vol. 23 No 2 2004; Orchids of The Brazilian Central Plateau Menezes 2004 photo fide; 100 Orquideas Argentinas Freuler 2005 photo fide; Orchid Species Culture: Oncidium, Bakers 2006 as Cohniella cebolleta ; The Pictoral Encyclopedia of Oncidium Zelenko 2002 as Trichocentrum cebolleta ; Vanishing Beauty, Native Costa Rican Orchids Vol 1 Pupulin 2005 as Cohniella cebolleta photo fide; Orquideas Da Chapada Diamantina Brito & Cribb 2005; AOS Bulletin Vol 76 No 3 2007 photo as Cohniella cebolleta; Orchids of Costa Rica Vol 1 Morales 2009 as Cohniella cebolleta photo fide; Orquideas de Roirama Luz & Franco 2012 as Cohniella cebolleta photo fide; Guia de Orquideas de Chiapas Carlos Rommel Beutelspacher Baigts 2013 as Trichocentrum brachyphyllum photo fide

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