Annual herb, erect with ascending or decumbent or spreading branches, up to 50 cm high; indumentum of curved and straight hairs, very rarely straight hairs only sparsely present. Leaves usually obovate or oblanceolate, 5–46 mm long, 5–18 mm wide; apex rounded, truncate or emarginate, mucro 0.3–0.5 mm long; petiole 0–2 mm long. Inflorescence axillary or supra-axillary, a raceme to 20 mm long, not exceeding the leaves. Pedicel to c. 3 mm long. Alae antrorse, occasionally perpendicular in fruit (position), herbaceous, ovate to lanceolate, usually somewhat dimidiate, 5–9 mm long, 2.0–3.5 mm wide, with curved and straight hairs or curved hairs only or glabrescent. Corolla purple; floral appendages spathulate; upper petal claw 1 mm wide. Stamens terminate at stigma, monadelphous; staminal flap 0.9–1.5 mm wide. Style hooked (horseshoe-shaped at apex), ± terete, with flat stigma along inner surface of hook. Capsule antrorse to occasionally perpendicular, ± aligned with alae, lacking wing, ± symmetrical, very widely ovate to widely elliptic, 4.7–5.8 mm long, 3.7–4.6 mm wide; lobe apices rounded and separated. Seed ovoid–obloid, 3.0–4.5 mm long, 1.3–2.0 mm wide, with indumentum of fine white or ferruginous hairs present. Aril head round to hooked, 0.5–0.8 mm long, white or white and brown, with fine short hairs. Aril appendages 3, linear to triangular, 0.45–1.80 mm long.
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