Oncidium reflexum Lindl. 1837 SECTION Oblongata
Photo by © Thanh Nam Nguyen and his Flickr Orchid Photo Website
Photo by Noble Bashor
to 
Common Name The Back-Bent Oncidium
Flower Size 1 1/2" [3.75 cm]
Found in Mexico, Guatemala and El Salvador on Pacific ocean facing slopes in oaks at elevations of 800 to 2200 meters as a medium sized, warm to cold growing, epiphyte with ovoid, compressed pseudobulbs partially enveloped basally by several, thin, leaf-less below and leafy above sheaths and carrying 2 apical, linear-lanceolate, acute, conduplicate below into the short, petiole-like base leaves and blooms in the fall on an axillary, slender, straggling, 1 to 3' [30 to 90 cm] long, pale green with crimson spots, loosely branched, few to many flowered panicle.
Many sources include O suave , O durangense and O liebmannii as synonyms but I have left them and their synonyms separate until better references become available.
Synonyms Oncidium acrochordonia Rchb.f. ex Kraenzl. 1922; Oncidium funereum Lindl. 1855; Oncidium macropterum A.Rich. & Galeotti 1845; Oncidium pelicanum Lindl. 1840; Oncidium reflexum var. caesium John Edwards 1855; Oncidium reflexum var. intermedium Regel 1856; Oncidium suttonii Bateman ex Lindl. 1842; Oncidium tayleurii Lindl. 1855; Oncidium uncia Rchb. f. ex Kraenzl. 1922
References W3 Tropicos, Kew Monocot list , IPNI ; Xenia Orchidaceae Rchb.f 1854 drawing; Die Orchideen Schlechter 1915; Atlas des Orchidees Cultivees Constantin 1920 drawing ok; Das Pflanzanreich Regni Vegetabilis Conspectus Odontoglossum/Oncidium Kranzlin 1922 as Oncidium acrochordonia drawing good; Das Pflanzanreich Regni Vegetabilis Conspectus Odontoglossum/Oncidium Kranzlin 1922 as Oncidium macropterum; Das Pflanzanreich Regni Vegetabilis Conspectus Odontoglossum/Oncidium Kranzlin 1922; Das Pflanzanreich Regni Vegetabilis Conspectus Odontoglossum/Oncidium Kranzlin 1922 as Oncidium uncia; Das Pflanzanreich Regni Vegetabilis Conspectus Odontoglossum/Oncidium Kranzlin 1922 as Oncidium suttonii drawing good; 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 ok; Flora Novo-Galaciana Vol 16 McVaugh 1985: The Manual Of Cultivated Orchid Species Bechtel, Cribb & Launert 1992 drawing fide; Rudolf Schlechter Die Orchideen Band 1C lieferung 33 - 36 2057 - 2308 Brieger 1997; The Pictoral Encyclopedia of Oncidium Zelenko 2002; Orquideologia Vol. 23 No 2 2004; Orchid Species Culture: Oncidium, Bakers 2006; Oncidium Vol 3 Koniger 2007 photo/drawing fide; Orchid Genera and Species in Guatemala Archila, Szlachchetko, Chiron, Lipinska, Mystkowska and Bertolini 2018; Orchid Genera and Species in Guatemala Archila, Szlachchetko, Chiron, Lipinska, Mystkowska and Bertolini 2018 as O suttonii
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