Ladenbergia acutifolia (Ruiz & Pavon) Klotzsch [ Cinchona acutifolia Ruiz & Pavon]
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Ladenbergia acutifolia (Ruiz & Pavon) Klotzsch [ Cinchona acutifolia Ruiz & Pavon] [Rubiaceae]
H. Ruíz López, J.A. Pavon, Fl. Peruv., vol. 2(coloured version): (Plates 153-325): p. 1, t. 225 (1798)