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Cinchona calisaya Wedd. - syn.Cinchona officinalis - Rubiaceae
Chinabark, yellow cinchona, Chinarindenbaum, (Gelbe) Chinarinde
Tree or large shrub, up to 15m high, native to Bolivia and Peru; leaves elliptic-oblong or lanceolate; flowers white, pale yellow, or pale pink. „Plants cultivated under the trade name Cinchona ledgeriana were considered to belong to C. calisaya by Andersson (Mem. New York. Bot. Gard. 80: 55-57. 1998). The description of the plants treated as C. ledgeriana by W. C. Chen (in FRPS 71(1): 224-225. 1999) agrees with Andersson’s classification of C. lancifolia Mutis and also generally matches the cultivated hybrid C. lucumifolia Pavon ex Lindley × C. pubescens (Andersson, loc. cit.: 60).“ http://www.efloras.org/florataxon.aspx?flora_id=2&taxon_id=242412650
„The Peruvian bark (with its active alkaloid quinine first isolated in 1820) has been used since the 16th century against fever and was particularly successful in Malaria fevers. Since the late 18th century quinine was a proven therapy against malaria. One can say that the quinine is pathognomonic for malaria; that
means if a fever is responsive to treatment with quinine, it is most likely a malarial fever.“
[Chinin als Malariatherapeutikum–prekär und unverzichtbar? Hulverscheidt, M.A., MPG Info, 2008, 83] http://pubman.mpiwg-berlin.mpg.de/pubman/item/escidoc:643388:3/component/escidoc:644273/P356.PDF#page=85
http://www.efloras.org/object_page.aspx?object_id=120069&flora_id=2