Monographs Details: Oncidium lanceanum Lindl.
Authority: Schweinfurth, Charles. 1967. Orchidaceae of the Guayana Highland. Mem. New York Bot. Gard. 14: 69-214.
Family:Orchidaceae
Description:Distribution and Ecology - BRITISH GUIANA. Upper Rupununi River near Dadanawa, lat. 2 45'N., flowers pink, violet and yellow. May 28, 1922, J. S. De La Cruz 1380. VENEZUELA. Bolivar: 30 km south of El Dorado, Rio Uaiparu (Kavanaupd Falls), El Palmar, (ten Houten), G. C. K. Dunsterville 364. TRINIDAD, SURINAM (type) and BRAZIL.

Distribution:Guyana South America| Venezuela South America| Trinidad and Tobago South America| Suriname South America| Brazil South America|