A large shrub or small tree, 1-5 m tall, young branches covered with white cottony tomentum. Leaves 6-18 x 3-10 cm, elliptic-oblong or obovate-oblong, base cordate, tip acute or shortly acuminate, petiole almost absent to 2 cm, young leaves covered with cottony tomentum becoming subglabrous. Flowers 3-4.5 cm in diameter, purplish or white. Peduncles up to 18 cm long, pedicels 5-8.8 cm long. Sepals 3-4 mm long. Corolla 1.5-2.2 cm long. Fruit 7-10 cm long and 2.5-4.0 cm broad, recurved. Seeds 5-6 mm long, broadly ovate, flat, minutely tomentose, comose.