Japan Flora: Glabrous shrub; branches rather slender, the young branchlets not angled; leaves lanceolate to narrowly rhombic-oblong, 2-5 cm. long, 6-20 mm. wide, cuneate to obtuse at base, loosely and irregularly incised-serrate, often glaucescent beneath, the nerves and veinlets raised beneath, the petioles 2-10 mm. long; inflorescence rather many-flowered, the axis sometimes slightly developed; pedicels 1-1.5 cm. long, sometimes with filiform bracteoles at base; flowers white, 7-10 mm. across, single; calyx-teeth deltoid, acute; disc short-pilose; fruiting carpels glabrous. Apn-May.

Introduced Chinese shrub long culti­vated in gardens.