Monographs Details: Bifrenaria aurantiaca Lindl.
Authority: Schweinfurth, Charles. 1967. Orchidaceae of the Guayana Highland. Mem. New York Bot. Gard. 14: 69-214.
Description:Distribution and Ecology - Brazil-British Guiana Boundary, Akarai Mountains on height of land between the drainage of Río Mapuera (Trombetas tributary) and Shodikar Creek (Essequibo tributary), 600-800 m alt., epiphyte in dense forest, flowers yellow mottled with purple, January 19, 1938, A. C. Smith 2989. BRITISH GUIANA. Along the Essequibo and Pomeroon Rivers, on tree, Schomburgk s.n.; near the Mazaruni River, Jeriman 719. VENEZUELA. Bolivar, Canaima just above Salto Hacha, and further upstream on Rio Carrao, G. C. K. Dunsterville 362; Bajo Caura, 120 m alt., L. Williams 12036; Rio Uaiparii, Rio Pardgua, F. Cardona s.n.; Auydn-tepuf, 1100 m alt., at the edge of Guayaraca plateau, in woods, [April 1956], Vareschi ir Foldats 4592; same locality and altitude, rather abundant epiphyte in Anthurium woods close to the Guayaraca plateau, and surrounded by a wooded savanna, April 1956, Vareschi ir Foldats 4694; same locality, faldas meridionales: vecindad de Guayaraca, en la primera (inferior) meseta (hombrillo) arriba del valle de Kamarata, 1000 m alt., on rocky edge of escarpment, on rocks, inflorescence erect, sepals and petals deep yellow spotted with brown, lip and column deep yellow. May 18, 1964, J. A. Steyermark 94201. Amazonas: Cerro Morrocoy, F. Matos 303A, fide Foldats; Tamanaco, Hno. Antonio 682, fide Foldats. TRINIDAD. The type was from BRITISH GUIANA.

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