Monographs Details: Houlletia roraimensis Rolfe
Authority: Schweinfurth, Charles. 1967. Orchidaceae of the Guayana Highland. Mem. New York Bot. Gard. 14: 69-214.
Description:Distribution and Ecology - VENEZUELA. Bolivar: Roraima, upper slopes, McConnell & Quelch 29; Ptari-tepui, 2130 m alt., on steep forested slopes at base of first line of sandstone bluffs, on south-facing part, east of "Cave Rock," terrestrial, leaves erect, firmly membranaceous, rich grass-green throughout, pedicels spreading grass-green, flowers fragrant, sepals and petals pale greenish yellow with dull lavender spots, lip rich yellow, November 4, 1944, J. A. Steyermark 59864; Chimantd Massif, northwestern part of summit of Abdcapa-tepui, 2125-2300 m alt., terrestrial in Bonnetia forest, leaf erect, coriaceous, plaited, rich green, peduncle arched-ascending, sepals and petals buff-greenish spotted inside with purple, cucullate and shining without, lip yellow spotted with purple, column becoming reversed, pale greenish with lavender tip, April 13, 1953, Steyermark 74853. Endemic to VENEZUELA.
Distribution:Venezuela South America