Ladenbergia oblongifolia (Humb. ex Mutis) L.Andersson [ Cinchona magnifolia Ruiz & Pavon]
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Ladenbergia oblongifolia (Humb. ex Mutis) L.Andersson [ Cinchona oblongifolia Humb. ex Mutis] [Rubiaceae]
J.E. Howard, Illustrations of the Nueva Quinologia of Pavon: t. 10 (1862) [W.H. Fitch]