Chinchona ( or Cinchona ) : genus of tropical evergreen trees and shrubs of the madder family, yielding the medicinal bark
variously known as Peruvian bark, Jesuits' bark, China bark, or cinchona bark, from which the drug quinine and related substances
are obtained. All the chinchonas have laurel-like, entire, opposite leaves; stipules that soon fall off;and panicles of flowers
that somewhat resemble those of the lilac. The flowers are white, rose or purplish and very fragrant. After introduction into
India and the East indies, it was widely cultivated there, particularly on Java. Today, the bark is peeled from the tree
and dried, and the final extraction of quinine alkaloids is done in factories.
WILLIAM CROSS IS AVAILABLE TO GIVE A TALK TO YOUR GROUP, SOCIETY, ORGANISATION ON THE LIFE AND WORK ON ROBERT CROSS.
Robert McKenzie Cross of Kew Gardens