Stock Photo - Quinine bark tree, Cinchona officinalis, and jalap, Ipomoea purga. Quinine bark tree, Cinchona officinalis 1, and jalap, Ipomoea purga 2, showing leaf, flower, and bark. Handcolored copperplate engraving from Friedrich Bertuch's Bilderbuch fur Kinder (Picture Book for Children), Weimar, 1798.

Stock Photo: Quinine bark tree, Cinchona officinalis, and jalap, Ipomoea purga. Quinine bark tree, Cinchona officinalis 1, and jalap, Ipomoea purga 2, showing leaf, flower.

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