Monographs Details: Maxillaria attenuata Ames & C.Schweinf.
Authority: Schweinfurth, Charles. 1967. Orchidaceae of the Guayana Highland. Mem. New York Bot. Gard. 14: 69-214.
Description:Distribution and Ecology - VENEZUELA. Bolivar: Ptari-tepui, 2100-2285 m alt., on densely forested steep south-facing slopes overlying sandstone, between "Cave Rock" and base of high sandstone bluffs, on tree, pedicel black-purple, sepals and petals brownish in upper half and dull yellow in lower half, lip dull yellow within "sides on curved part of orifice dull brick brown," column pale yellow at tip, October 30, 1944, J. A. Steyermark 59539. COSTA RICA (type) and PERU.

Distribution:Venezuela South America| Costa Rica South America| Peru South America|