Cinchona officinalis many-flowered; hypanthium with short coarse hairs; reddish calyx, glabrous or nearly so, with triangular lobes; pink or red corolla, sericeous, the lobes ovate, acute, the corolla tube being about 1 cm. long. Fruit and oblong capsule, 1.5–2 cm. long, almost glabrous. English: quinine, red cinchona, cinchona bark, Jesuit’s bark, loxa bark, Jesuit’s powder, countess powder, Peruvian bark. Spanish: quina, cascarilla, cargua cargua, corteza coja. French: quinquina, écorce du Pérou. "Cinchona officinalis" is a medicinal plant, one of several "Cinchona" species used for the production of quinine, which is an anti-fever agent. It is especially useful in the prevention and treatment
Hugh Algernon Weddell des environs de Paris (1845). In 1843, he was invited to join the expedition of François Louis de la Porte, comte de Castelnau to South America, and he explored and collected botanical specimens on that continent for five years. In May 1845, Weddell left the expedition which was then in Paraguay, and proceeded on a solitary journey which would take him into Peru and Bolivia. Before leaving Paris, he had been particularly instructed by the Muséum national d'Histoire naturelle to undertake a thorough investigation of the "Cinchona" plant, or "fever bark" tree in its native habitat. "Cinchona", the source of