Chuchuhuasi is an enormous canopy tree of the Amazon rainforest that grows to 30 m high. It has large leaves (10-30 cm), small, white flowers, and extremely tough, heavy, reddish-brown bark. Several botanical names have been given to this species of tree. It is referenced as Maytenus krukovii, M. ebenifolia, M. laevis, and M. macrocarpa; all botanical names refer to the same tree. Chuchuhausi is indigenous to the tropical rainforests of Bolivia, Colombia, Ecuador, and Peru.
The main plant chemicals found in chuchuhuasi include: agarofuran sesquiterpenes, canophyllol, catechin tannins, dammarane triterpenes, dulcitol, ebenifoline alkaloids, euojaponine alkaloids, friedelan triterpenes, krukovine triterpenes, laevisine alkaloids, macrocarpin triterpenes, maytansine, mayteine, maytenin, mebeverine, phenoldienones, pristimeran, proanthocyanidins, and tingenone (and its derivatives).