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The dried bark of the root and stem of various species of Cinchona, a genus of evergreen trees (family Rubiaceae), native of South America but cultivated in various tropic regions. The cultivated bark contains 7-10% of total alkaloids; about 70% is quinine. Cinchona contains more than 20 alkaloids, of which two pairs of isomers are most important: quinine and quinidine, and cinchonidine and cinchonine.
[Cinchona, fr. Countess of Chinch'on]


Herbal lmedicine
(1) China, see there.
(2) Cinchona, see there; Cinchona species.

quinquina (kwinˑ·kwiˈ·n),

n bark from the root or stem of the
Cinchona tree; formerly was used to treat malaria. Also called
Jesuit's cinchona, and
Peruvian bark.
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References in periodicals archive ?
Saunders, who coined the term shim for low-alcohol cocktails, says the foundation of many great shims is fortified or aromatized wine such as sherry, port, vermouth and quinquinas.
The cure was later discovered to be cinchona all along, as the fabulist Jean de la Fontaine wrote in his ode to this newfound remedy, entitled "Le Poeme du Quinquina.
Quinine is derived from quinquina bark of the chinchona tree and first showed to be an effective yet unpredictable malarial cure.