Stems creeping and forming mats, glabrous; lvs oblanceolate to cuneate- obovate, entire, 0.5-2.5 cm, with a single midvein and a few obscure pinnately disposed lateral veins; fls solitary at the nodes on pedicels 1-2.5 cm; cal subtended by a pair of linear bractlets 2-3 mm; upper sep ovate to lanceolate, ca 6 נ2.5 mm; cor white to sometimes pink or blue, campanulate, 7-10 mm, glabrous within, the 5 lobes subequal, retuse; stamens included; stigma one, shallowly bilobed; 2n=64. Wet sandy shores on the coastal plain; se. Va. to Fla. and Tex., and widespread in the tropics. All summer. (Bramia m.)
Gleason, Henry A. & Cronquist, Arthur J. 1991. Manual of vascular plants of northeastern United States and adjacent Canada. lxxv + 910 pp.