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]
H. Ruíz López, J.A. Pavon, Fl. Peruv., vol. 2(coloured version): (Plates 153-325): p. 53, t. 196 (1798)