A shrub, 1-3 m tall, nearly glabrous. Leaves 2.5-9 cm long, 1.5-5 cm broad, elliptic-rhombic, irregularly dentate, acute at apex, cuneate at base, unlobed or obscurely to deeply 3-lobed; stipules 4-6 mm long, linear; petiole 0.5-3.5 cm long, pubescent. Flowers axillary, solitary, large, single or double; pedicel 0.5-2 cm long, stellate pubescent. Epicalyx segments 6-8, 6-15 mm long, linear, stellate pubescent. Calyx 1.2-1.7 cm long, free to the middle, yellowish, stellate pubescent; lobes lanceolate, acute. Corolla 4-5 cm across, of various colours; petals obovate, 3-5 cm long, 2-3.5 cm broad, stellate hairy outside, glabrescent, claw ciliate margined. Staminal column inserted, antheriferous to the base. Capusle 1.5-2 cm long, 1 cm across, ellipsoid, yellowish stellate pubescent, beaked. Seeds 2-4 mm long, reniform, glabrous except with a line of long white hairs on the dorsal side.