Lianas; stems herbaceous at the tips, becoming woody with age, glabrous. Leaves broadly ovate to suborbicular, 3-10 cm long, shallowly cordate to truncate basally, acuminate apically, glabrous or obscurely puberulent and with micro-scopic "glands" beneath. Flowers disposed in a 1-to several-flowered axillary cyme; sepals elliptic to suborbicular, 6-8 mm long, subcoriaceous and cochleate; corollas pale pink to white, 4-5 cm long. Fruits capsular, broadly ovoid, apically attenuate to the base of the persistent style; seeds comose.
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