Brunfelsia uniflora (Manaca)

It can be found in the Amazon regions of Brazil, Bolivia, Peru, Ecuador, Colombia, and Venezuela. Manaca is a medium-sized, shrubby tree that grows to 8 m high and is indigenous to the Amazon rainforest. Often it is cultivated as an ornamental; it produces pretty, yellowish-white, highly-fragrant flowers, from which a perfume is extracted. Indigenous tribes in the northwest Amazon consider manacá to be a diaphoretic and diuretic. They use it for fever, rheumatism, snakebite, syphilis, and yellow fever.

See article about Brunfelsias: Yesterday-Today-Tomorrow, Brunfelsia from Brazil.