Prostrate, climbing or suberect ± glaucous herb, with an unpleasant smell; stems 10–50 cm long, whitish, from underground rhizome. Leaves ovate to ± round, 1.5–8 x 1.5–7 cm, obtuse, cordate at the base, glabrous; petiole 0.5–4.5 cm long. Flowers solitary or 2–3 together, axillary; bracts ± round, 0.6–1.7 cm in diam.; pedicels up to 2 cm in fruit. Perianth 2.5–4 cm long, the basal inflated part 5–8 mm long, the tubular part 8–15 mm long, hairy within, limb linear-oblong, 12–22 x 3–7 mm, obtuse, hairy inside. Capsule pale, subglobose to ellipsoid, 1–3 x 1.5–2 cm, glabrous, 12-ribbed. Seeds triangular, 5–7 x 4.5 mm, rugose.