Decumbent, spreading annual herb, 8–15 cm high, 25–30 cm wide. Leaves with 1 pair of leaflets; petiole flattened, 6–18 mm long; leaflets succulent, obovate, 6–15 mm long, 3–8 mm wide, continuous with petiole and not articulated at base, emarginate at apex. Pedicel 1–3 mm long in flower. Sepals 4, 2.2–2.8 mm long. Petals 4, obovate, 2.2–3 mm long, slightly longer than or ±equal to sepals, yellow drying white. Stamens 8; filaments c. 1.3 mm long, basally winged; wing apices apiculate. Disc 4-lobed; lobes free, oblong. Ovary 4-angled, 4-celled, glabrous, rarely with hairs on angles; stigma capitate, not lobed. Capsule, 4-angled, 4-celled, 5–6.5 mm long, obliquely truncate at apex; pedicel 2–3 mm long; fruiting style 0.3–0.4 (–0.6) mm long. Seeds 1 or 2 per cell, 3–3.6 mm long, greenish, smooth, shiny.
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