Korea Flora: Deciduous tree or shrub with greenish glabrous branches, Terminal bud 7-13mm long with 2 scales, acuminate, leaf scars V shape or crescent, Leaves deciduous and opposite, leaf blade ovate and acuminate, 7-16cm ×(7)10-16cm, the blade shallowly cordate to rounded at base, shallowly 3-5 fid on upper part with 5 distinctive veins at base, petiole 3-8 cm long, Inflorescence a rather densely many-flowered (15-20) raceme and 8 cm. long, andromonoecious, short-pedunculate, pendrous, and the pedicels 8 mm. long. Seeds 30 mm long. wings spreading obtusely or horizontally.

2n=26
Flowering late Apr. to mid May
Fruting late Sept
Distribution: NE China, far eastern Russia; Hamkyong, Pyongan, Gangwon, Woods and thickets in mountains in subalpine zone

Russia Flora: Tree 10-12 (15) m tall, with characteristic green bark, later brown- or gray-green with longitudinal dark brown stripes. Terminal buds up to 10 mm long, lanceolate-ovate, acute, stalked; stalks up to 5 (6) mm long, with one pair of outer scales, reddish light brown, glabrous. Shoots brown-green, often with dark brown spots (usually more than 2 mm in diameter even under terminal buds), glabrous. Leaves 3-5-lobed, 9-17 cm long, 7-17 cm wide, with cordate rounded or truncate base, doubly serrate, glabrous above, sparsely finely pubescent along veins below, also with characteristic membranous patches in vein angles; leaf lobes short (especially on branching shoots), abruptly narrowed into short sharp tip. Petioles 5-9 cm long, shorter than leaf blade, glabrous. Inflorescence a terminal raceme with 15-25 flowers, with glabrous axis and pedicels. Flowers half-open, greenish-yellow, glabrous; petals 3-3.5 mm long, obovate or broadly spatulate; sepals of same length, elliptical; stamens slightly shorter than petals, numbering 8. Samaras 2.5-3 cm long, diverging at very obtuse angle. 2n=26 (Gurzenkov, 1973). (Table XIX).

Distribution: Lower Zeya (Bureya River basin), Bureya, Amgun, Ussuri (Fig. 66). - In mixed forests of various types. Flowering in May. Ornamental, can be used in park construction. Honey plant. Bark of young shoots used by locals as an astringent.

General distribution: Japanese-Chinese (Northeast China, Korean Peninsula). - Described from Khabarovsk: "On northern Amur, C. Maximowicz" (type - LE).