Annual; stems twining or prostrate, patently pubescent. Leaves triangular-ovate, 4.7–7.5 cm. long, 3–4.6 cm. wide, acuminate at the apex, cordate at the base, sparsely pilose; petiole 1.5–5 cm. long. Flowers solitary or in 2–5-flowered cymes; peduncle about 3 mm. long; pedicels 3.5–8 mm. long. Sepals ovate-triangular, acute or acuminate at the apex, contracted or rounded below, hairy to glabrescent; outer three 4.5–6.5 mm. long, 2.5– 3.5 mm. wide, with ciliate margins; inner two linear-oblong, 4 mm. long, 1.5 mm. wide, less ciliate. Corolla white or with purple centre, 6–7 mm. long ;style short; stigmas purplish. Capsule ovoid, glabrous, 8.5 mm. long; fruiting sepals 8 mm. long, 4.5 mm. wide. Seeds grey, subtrigonous, covered with short adpressed hairs.