The cinchona is a genus of trees, shrubs and herbaceous plants of the order Cinchonaceae native to South America which consists of gamopetalous, calycifloral dicotyledons, sometimes regarded as a sub-order of Rubiaceae.with fragrant white or pink flowers. They have simple opposite leaves, flowers arranged in panicles or corymbs; calyx adherent, entire or toothed; corolla regular; stamens attached to corolla; ovary two-celled; fruit inferior, dry or succulent. The bark contains quinine and other related alkaloids. The tree was named in honour of the countess of Chinchon, the vice-Queen of Peru after she was cured of fever by cinchona bark in 1638.
The genus Cinchona consists of trees seldom exceeding 14 metres in height, with simple, opposite, entire leaves and small flowers, inhabiting chiefly the east side of the Andes of Peru, Bolivia, Ecuador, and Colombia. The valuable Peruvian bark is yielded by various species; crown or loxa bark by Cinchona Condaminea, gray or huanuco bark by Cinchona micrantha and Cinchona nitida, red-bark by Cinchona succirubra, yellow or calisaya bark by Cinchona Calisaya. From the wasteful method of cutting down the trees to get their bark it was believed that there would soon be a dearth of the valuable medicine, and hence cinchona plants were taken from their native regions and plantations formed in various tropical countries including Sri Lanka, India, Java, etc. Research Cinchona
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Abbreviations
Nature
Research Cinchona
