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Vines; stems slender and herbaceous, lignescent especially near the base, probably a short-lived perennial, glabrous. Leaves ovate, 5-15 cm long, basally cordate, apically acuminate with an acute or obtuse mucronulate acumen, mostly entire, glabrous. Flowers in few-to several-flowered cymose groups terminating a peduncle that is often longer than the petiole; sepals ovate or the inner ovate-lanceolate, 5-10 mm long, apically acute, mucronulate, usually glabrous; corolla with a pink to lavender limb, the throat darker, 4-6 cm long. Fruits capsular, globose to depressed-globose, often 4-angled; seeds dark brown, rotund, glabrous.
A herb. It is a creeper or slightly woody vine. It is twining. It grows 5-10 m long. It has milky sap. The stems have lines along them. The leaves are alternate and the blades simple. They are 5-20 cm long by 4-14 cm wide. They are oval and papery. They can have 3-5 lobes. They are dull dark green on the upper surface and pale green underneath. The flowers are orange-yellow. The fruit are round and flattened and 8-10 mm across.
