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Oncidium concolor Single-Colored Oncidium


Single-Colored Oncidium , Oncidium concolor


Oncidium concolor Hook. 1841 SECTION Concoloria Photos by Stefan Paeffgen

Common Name The Single-Colored Oncidium

Flower Size about 2" [about 5 cm]

A small sized, cool to warm growing epiphyte found in Brazil and northern Argentina in areas frequented by short frosts in montane forests with clustered, narrowly oblong or ovoid-oblong, sulcate in time pseudobulbs carrying 2 apical, rigid, erect spreading, lanceolate-ligulate, acute leaves that blooms with an arcuate to pendant, 12" [30 cm] long, slightly fractiflex raceme with apressed, concave, pale green bracts that has loosely few to many [4 to 12 ] flowers and occurs in the spring and summer. Potting or mounting with treefern works wekk if given warm to cool temperatures, moderately bright light and good air movement. This species and Oncidium ottonis are similar and often considered the same but differ in O concolor having the 2 lamellae of the callus are of unequal height from the top to the bottom and other lip variants, but the easiest way to distinguish the two is that O ottonis always has brown spoltches on the dorsal side of the sepals and O concolor is consistently yellow to yellow green with no spotting.

Synonyms Carenidium concolor (Hook.) Baptista 2006; Concocidium concolor (Hook.) Romowicz & Szlach. 2006; Cyrtochilum citrinum Hooker 1849; Oncidium normani hort. ex Pritz. 1840; Oncidium ottonis Schltr. 1914; Oncidium unguiculatum Klotsch 1846