Prostrate or ascending annual or perennial herb. Stems elongate, up to 1 m, creeping, richly branched, ± glandular hairy to almost glabrous. Stipules membranaceous, 1-4 mm, splitting into thin whitish setae. Leaves glabrous or almost so, ovate to reniform or suborbicular, apex rounded, often apiculate, base ± cordate, obtuse or truncate, 5-25 by 3-25 mm; petioles 3-8 mm long. Inflorescence lax. Flowers pedicellate; pedicels slender, 1-5 mm, glandular hairy; bracts scarious, narrowly elliptic, 1-2 mm long. Sepals glandular, particularly along the raised veins, margins inflexed, oblong, green, c. 3 mm long, with scarious margin. Petals narrowly obovate-elliptic, shorter than the sepals, bifid, usually to about the middle. Stamens 5, sometimes fewer. Styles 3, connate at the base, hairy in the upper part. Capsule ovoid, 2-2.5 mm long, opening by 3 valves. Seeds few, dark brown, papillate, 1.5-2 mm.