Oncidium macropetalum Lindl. 1841 SECTION Barbata Photo courtesy of Jay Pfahl
Flowering Inflorescence Photo courtesy of Weyman Bussey
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Common Name The Large Petal Oncidium
Flower Size 1 1/4" [3.2 cm]
This miniature, hot to warm growing species from Paraguay, Minas Gerais, Goias, Matto Grosso and Sao Paulo states of Brazil and Bolivia? is found in the hot lowlands and savannahs at elevations up to 1000 meters and has conical, somewhat laterally compressed, fluted psuedobulbs subtended by 1 to 2 leaf-bearing sheaths and carries 1 or 2, apical, arching, acute leaves and blooms on an axillary, slender, arcuate to pendulous, 18" [40 cm] long, few to many flowered, paniculate inflorescence arising on a mature pseudobulb occuring in the winter and spring. Supply warm to cool temperatures with moderate light , plenty of water while growing and less when not, as well as good air movement will ensure a happy plant
Synonyms Alatiglossum macropetalum ( Lindl. ) Baptista 2006 ; Oncidium macropetalum Lindl. var. micranthum G.F.J.Pabst 1977
References W3 Tropicos, Kew Monocot list , IPNI ; Orchids of The Brazilian Central Plateau Menezes 2004 photo fide; Orchid Species Culture: Oncidium, Bakers 2006; AOS Bulletin Vol 76 No 2 2007 photo; Oncidium Vol 3 Koniger 2007 photo/drawing fide;
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