PLANTS: Vines, herbs or suffrutescent shrubs.
STEMS: herbaceous toward tips, procumbent to twining, glabrous or densely pubescent.
LEAVES: chartaceous to herbaceous, mostly cordate, glabrous or with stellate trichomes, entire, dentate or lobate, petiolate.
INFLORESCENCE: scorpioid or head-like cymes, umbels, or flowers solitary; bracts small and linear to lanceolate or large and foliose.
FLOWERS: on pedicels 5-30 mm long; sepals equal or unequal, variable in shape, pubescent or glabrous; corollas blue, lilac or white (red in one West Indian species), subrotate, campanulate or funnelform, deeply lobed, dentate or almost entire, glabrous or pubescent; stamens and styles included (in our species); ovary 2-locular, glabrous or pubescent; styles 1, filiform; stigmas 2, ellipsoid or oblong and flattened.
FRUITS: capsular, with 4 or 8 valves, globose.
SEEDS: 1-4, glabrous, tuberculate, winged or pilose.
NOTES: Ca. 80-100 spp. Subtropics and tropics from s U.S. to c S. Amer., Asia, Australia. (for V. Jacquemont), Robertson, K. R. 1971. A revision of the genus Jacquemontia (Convolvulaceae) in North and Central America and the West Indies, Ph.D. dissertation, Washington Univ., St. Louis.
REFERENCES: Austin, Daniel F. 1998. J. Ariz. - Nev. Acad. Sci. Convolvulaceae 30(2): 61.
