Oncidium wentworthianum Bateman ex Lindl 1840 SECTION Oblongata

Photo by Jay Pfahl

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Common Name Wentworth's Oncidium [English Count-Orchid Enthusiast 1800's]

Flower Size 1"+ [2.5 to 3 cm+]

Found in El Salvador, Guatemala and Mexico at elevations of 650 to 1500 meters as a medium sized, warm to cool growing epiphyte with ovoid-ellipsoid, compressed, dark green mottled brown pseudobulbs enveloped basally by fibrous-scarious sheaths and carrying 2 apical, linear-ligulate to lanceolate, subcoriaceous, acute leaves that blooms in the spring, summer and fall on a flexuous, branched, 7' [210 cm] long, few to many [3 to 15] flowered inflorescence with large, showy, fragrant flowers held in clusters at the apex of the branches.

O hagsaterianum is said to be synonomous with this species but I have left them separate for now.


References W3 Tropicos, Kew Monocot list , IPNI ; *The Orchids of Mexico and Guatemala Bateman 1843 drawing fide; Bonplandia Rchb.f 1856; Die Orchideen Schlechter 1915; Das Pflanzanreich Regni Vegetabilis Conspectus Odontoglossum/Oncidium Kranzlin 1922; Encyclopedia of Cultivated Orchids Hawkes 1965; Las Orquedias De El Salvador Vol 2 Hamer 1974 drawing/photo fide; Las Orquedias de El Salvador Vol 3 Hamer 1981 drawing fide; The Manual Of Cultivated Orchid Species Bechtel, Cribb & Launert 1992 photo fide; ORQUIDEA (MEX.) 13(1-2). DICIEMBRE 1993 photo fide; Rudolf Schlechter Die Orchideen Band 1C lieferung 33 - 36 2057 - 2308 Brieger 1997; Guatemala Y Sus Orquideas Behar & Tinschert 1998 photo fide; The Pictoral Encyclopedia of Oncidium Zelenko 2002; Oncidium Vol 2 Koniger 2005 photo/drawing fide; Orchid Species Culture: Oncidium, Bakers 2006; Las Orquideas del Peru Izerskyy & Bezverhov 2011 photo fide; Orchid Genera and Species in Guatemala Archila, Szlachchetko, Chiron, Lipinska, Mystkowska and Bertolini 2018 photo fide