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Oncidium pardothyrsus Dark Bunch Oncidium


Dark Bunch Oncidium , Oncidium pardothyrsus


Oncidium pardothyrsus Rchb. f. & Warsz. 1857 SECTION Planilabra Photo courtesy of Jay Pfahl

Common Name The Dark Bunch Oncidium

Flower Size 3/8" [1 cm]

Found in Peru and Ecuador on the western slopes of the Andes as an ascending, small sized, hot to warm growing epiphyte that occurs at elevatons of 500 to 1500 meters in damp forests with a distinct dry season in the spring through fall, with ovate-elliptic, complanate, lightly sulcate pseudobulbs subtended by a pair of conduplicate leaf-bearing bracts and 2, apical, lorate, long-attenuate to the conduplicate base, long tapered to the acute apex of the leaf and blooms on a basal, to 22" [to 55 cm] long, erect to arcuate, paniclulate inflorescence, arising on a mature pseudobulb with 2 to 8 flowers per each branch that occurs in the winter.

Many sources say this is a synonym of Onc planilabre Lindley 1851, but I have left it as a separate species until the DNA evidence is available.

Synonyms Oncidium subobscurum Kraenzl. 1922