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A herb that keeps growing from year to year. The stems are 3 m long. They are hairy when young. The leaf blade is heart shaped or kidney shaped and 2-7 cm long by 2-7 cm wide. It tapers to the tip. There can be lobes at the base. The flowers are in groups of 1-5. They are funnel shaped and have slight spreading wings. They are light red or purple. The fruit capsule is round. The seeds are brown.
Trailing or climbing perennial herb. Leaves broadly cordate or cordate-reniform to cordate-ovate, abruptly acuminate; entire or irregularly lobed or toothed in lower half. Sepals oblong, elliptic or ovate to somewhat spathulate, obtuse, minutely mucronate. Corolla 20-35 mm long. Seeds shortly pubescent. Flowers light magenta or purplish.
Leaf lamina broadly cordate or cordate-reniform to cordate-ovate, 2–6·5 × 2–7 cm., usually abruptly acuminate, basal sinus always broad and rounded, entire or irregularly lobed or toothed in the lower half, glabrous or nearly so on both surfaces except for the minutely and obscurely ciliate margin; petiole 0·8–5 cm.
Sepals unequal, thinly coriaceous, glabrous or minutely pubescent, accrescent; outer ones oblong, elliptic or ovate to somewhat spathulate, obtuse, 5–6 mm. long; inner ones considerably longer, obtuse to almost truncate or faintly emarginate, minutely mucronate, 7–9 mm. long.
Inflorescences 1–5-flowered; peduncle 1·5–9 cm., slender, hispidulous or scabrid as stems and petioles or pubescent; bracts ovate, minute, usually scabrid; pedicels somewhat thickening upwards, 5–12 mm. long, minutely hispidulous, scabrid or pubescent.
Stems up to 3 m. long, slender, trailing or also climbing, puberulous when young, glabrous, pubescent or scabridulous later.
Corolla funnel-shaped with horizontally spreading limb, light magenta or purplish, 2–3·5 cm. long, glabrous, hardly lobed.
Seeds brown, shortly pubescent with a dense tuft of white or yellowish short hairs around the hilum.
Capsule globose or ovoid-conical, glabrous.
Perennial herb.
