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6 556977 Ipomoea nil (L.) Roth (L.) Roth [Ipomoea cuspidata Ruiz & Pavon]
H. Ruíz López, J.A. Pavon, Fl. Peruv., vol. 1 (Plates 1-152): p. 11, t. 119, fig. a (1798-1802)
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