Keywords: Ipomoea purga (as Exogonium purga) Bot. Reg. 33.49.jpg Ipomoea purga Edwards's Botanical Register; Consisting of Coloured Figures of Exotic Plants Cultivated in British Gardens; with their History and Mode of Treatment London 33 49 1847 as Exogonium purga 1847 Botanical Register PD-Art Ipomoea purga Edwards's Botanical Register vol 33 |