JACQUEMONTIA (named after Victor Jacquemont, 1801-1832, a French naturalist, and traveller in the East Indies). ORD. Convolvulaceae. This genus comprises about thirty-six species of stove twining or prostrate herbs or sub-shrubs, one being a native of tropical Africa, and the rest tropical American. Flowers blue, white, or rarely violet, sometimes loosely or densely cymose, sometimes capitate, rarely solitary or loosely racemose. Leaves entire, often cordate, rarely dentate or lobed. The species here described are, perhaps, the only ones yet introduced. For culture, see Ipomoea. JACQUEMONTIA canescens (hoary). fl. blue, in dense-flowered pedunculate cymes; sepals oblong, obtuse. June and July. l. oblong-cordate, on long petioles. h. 6ft. Bogota, 1846. Plant downy, scabrous. (B. R. 1847, 27, under name of Convolvulus canescens.) JACQUEMONTIA violacea (violet). fl. pale blue, sessile; peduncles umbelled, five-flowered. July to September. l. oblong-cordate, acuminate, sub-repand, smooth. h. 6ft. Mexico to Brazil, 1808. (B. M. 2151, under name of Convolvulus pentanthus.)