Upright or spreading perennial, 40–100 cm tall; branchlets velvety, with simple glandular and stellate hairs and occasional longer simple hairs. Leaves ovate, 0.5–7 cm long, 0.8–4 cm wide, not markedly discolorous. Flowers solitary or in cymes; calyx campanulate, 7.5–9 mm long, 5-ribbed, ± equal to fruit; lobes acuminate, midline darker at apex; corolla yellow, exceeding calyx; lobes 5–16 mm long, asymmetrically emarginate apically; staminal column 6–9 mm long, pubescent; styles 10–11. Fruit transversely rectangular, green, 6–9 mm high, adjacent mericarps adhering for c. quarter of their surface, soon separating; mericarps 1- or 2-seeded, unawned.