Climbers, the stem woody at the base, perennial, smooth or with short fleshy prickles, glabrous. Leaves rounded, ovate, entire or 3-5-lobed, 5-15cm long, basally cordate, apically acuminate, glabrous. Flowers in 1 to several flowered cymes. Sepals fleshy, ovate to elliptic, 10-20 mm long, apically caudate, at least on the outer sepals. Corolla white, salverform, the tube 9-15 cm long, the limb 8-10 cm broad. Fruit capsular, ovoid to subglobose, 2-3 cm long, dark brown, glabrous. Seeds dark brown to black, glabrous.