Oncidium geertianum C. Morren 1848 SECTION Sphacelatum Photo courtesy of Weyman Bussey

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Common Name Geert's Oncidium [Belgian Orchid Enthusiast 1800's
Flower Size 1.2" [3 cm]
A small sized, cool to cold growing epiphytic species found in Mexico at elevations of 1600 to 2300 meters with a short rhizome giving rise to ovate, slightly laterally compressed, ancipitous pseudobulbs carrying 2, apical, lanceolate, acute leaves that blooms on an ascending to erect, spreading, decurved, 6 to 8 flowered, racemose inflorescence.
Often cited as a synonym of Oncidium nebulosum but I have kept them apart for better photos and info.
Synonyms Oncidium caesium Rchb. f. 1854
References W3 Tropicos, Kew Monocot list , IPNI ; Xenia Orchidaceae Rchb.f 1854 as O caesium drawing fide; Oncidium Vol 3 Koniger photo/drawing fide;
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