The cinchona trees found growing in Colombia were not "far to the east of their regular habitat" but barely 150 miles east.

By the mid-1880s the Dutch had grown vast plantations of cinchona trees and monopolised the world market.

Quinine, derived from the bark of the cinchona tree, must be administered in very high doses to reduce fevers.

It had been the fathers who had firstintroduced the cinchona trees to this island.

Quinine is the active anti-malarial ingredient in the bark of cinchona tree.

Carefully, through her tears, she fed him syrup that she'd made from the bark of the cinchona tree.

We deal largely in Peruvian remedies, principally the bark of the cinchona tree, from which quinine is made.

He provided the first accurate information on rubber trees and on the cinchona tree (the source of quinine).

The crowned eagle dropped steeply from the cinchona tree.

The first effective treatment for malaria came from the bark of cinchona tree, which contains quinine.