Spreading, sprawling, perennial or annual, green or dark green herb, 12–40 cm high, 30–80 cm wide. Leaves with 1 pair of leaflets; petiole narrow-flattened, 4–8 mm long; leaflets succulent, not appressed to each other, obovate, 18–52 mm long, 10–31 mm wide, continuous with petiole and not articulated at base, rarely appearing articulated, rounded at apex. Pedicel 3–7 mm long in flower. Sepals 4, 3.5–6.5 mm long. Petals 4, obovate, (5–) 6.5–13 mm long, longer than sepals, bright yellow drying white. Stamens 8; filaments 3–6 mm long, winged in lower half; wing apex with single tooth or truncate or reclinate; margins entire or obscurely toothed. Disc sinuately 4-lobed, entire, succulent, papillose on margin. Ovary 4-angled, 4-celled, glabrous; stigma capitate, not lobed. Capsule pendent, 4-angled, 4-celled, elliptic or obovate in outline, 10–17 mm long, 6.5–12 mm wide, rounded at apex; pedicel 3–7 mm long; fruiting style 2–3 mm long. Seeds 2–5 per cell, 3.7–4.4 mm long, dark brown with whitish aril along most of one edge.
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