A big climber, branches stout. Leaves elliptical to broadly ovate, 12.5—16 cm x 9—12.5 cm, glabrous, coriaceous, petiole 9—20 mm long, strongly winged or not, stipules entire. Flowering head up to 3 cm in diameter, 10 cm in fruit, peduncle up to 3 cm long, flowers short pedicellate, yellowish, calyx fusiform, lobes elliptical to oblong, pubescent, corolla up to 2.3 cm long, pubescent. Capsule fusiform, 1.3—2.5 cm long, pubescent. |