Daniel F. Austin and Shahina Ghazanfar (1979) Convolvulaceae. 126: 1-64
Plants climbing herbs or small shrubs, glabrous or pubescent. Leaves petiolate; blades simple, entire, dentate or lobed, bases usually cordate. Inflorescences axillary, of solitary flowers, scorpioid cymes or umbelliform or head-like cymes. Flowers radially symmetric, bisexual; sepals equal or unequal, mostly pubescent; corollas campanulate or funnel-shaped, blue, lilac or white, deeply lobed, dentate or entire; stamens included, anthers ellipsoid; ovaries 2-chambered, ovules 2 per chamber; styles 1, filiform, 2-branched, branches ellipsoid or oblong and complanate. Fruits capsules, globose to subglobose, with 4 major valves, these sometimes splitting further into 8; seeds glabrous, tuberculate, winged or pilose.
Jacquemontia includes about 120 species, most of which are native to the Americas.