Compact or sprawling, semiprostrate annual herb, to 20 cm high, wider than high. Leaves with 1 pair of leaflets; petiole flattened, 5–20 mm long; leaflets succulent, narrowly oblong or narrowly obovate, (3–) 8.5–24 mm long, 2–5.5 mm wide, articulated or not at base, rounded-obtuse with a tiny apiculum, or rarely, emarginate at apex. Pedicel 2.5 mm long in flower. Sepals 4, 1–2 mm long. Petals 4, obovate, usually narrowly so, 1.2–2.5 mm long, similar in length to or just longer than sepals, yellow drying white, or ?white. Stamens 4; filaments 1.2–1.5 mm long, narrowly winged in lower half, without appendages. Disc 4-lobed; lobes free, oblong. Ovary 4-angled, 4-celled, sometimes papillose on angles; stigma minutely 4-lobed. Capsule 5–7.5 mm long, 4–7 mm wide, 4-angled, 4-celled, obliquely truncate at apex; pedicel 3.5–4.5 mm long; fruiting style 0.3 mm long. Seeds 2 (–4) per cell, 2–3 mm long, covered with longitudinal rows of tuberculae.
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