[mod.L. (Linnæus), from the name of Domenico Vandelli (1732–), an Italian botanist, in later life resident in Portugal.] A genus of scrophulariaceous plants, some of which possess emetic or purgative properties; a plant of this genus, esp. V. diffusa, or a medicinal preparation of this.
1797. Encycl. Brit. (ed. 3), XVIII. 618/1.
1829. Loudon, Encycl. Plants, § 30. Diffuse Vandellia.
1887. Moloney, Forestry W. Africa, 396. Employed in this manner the vandellia is as certain in its action as ipecacuanha.
