C. angustifolia:
"Pharmacology:The chemical constituents in bobinsana are not well documented. It is believed to contain harmala alkaloids, amino acids, cyanogenic glycosides, flavonoids, tannins, saponins, and sterols. Two studies reports the presence of several pipecolic acids.
In the Amazon, the Indians of the Rio Pastaza consider bobinsana to be a stimulant. The Shipibo-Conibo Indians in the Ucayali area of Peru call the tree semein and prepare a bark tincture for rheumatism, arthritis, colds, uterine disorders, and edema (or water retention). The indigenous people and tribes in the Madre de Dios region of the Peruvian Amazon prepare a bark tincture (with aguardiente) for bone pain, arthritis, rheumatism, and colds. "
(from a vendor's website, so I don't want to post the link here, and anyhow they've sold out of it.)