cinchonic

noun

1. any of a genus (Cinchona) of tropical South American trees of the madder family, from the bark of which quinine and related medicinal alkaloids are obtained: the trees are widely cultivated in Asia and the East Indies
2. the bitter bark of these trees

Etymology: ModL: coined by Carolus Linnaeus after the Countess del Chinchón, wife of a 17th-c. Peruvian viceroy, who was treated for fever with the bark