Korea Flora: Shrub up to 10m. bark gray, smooth. Twigs pubescent, yellowish young and dull reddish in second year. Bud scales 2 pairs, Leaves deciduous leaf blade ovate, 5-lobed, petiole 4-13 cm, puberulent when young; leaf blade ovate, 5-10 × 5-8 cm, abaxially hirsute-pubescent on veins, adaxially glabrous, middle lobes not serrate apically; leaves in fall yellow, Inflorescence racemose, pedicel 2.5 cm, peduncle pubescent, 1.5cm long, sepals and petals yellowish green, sepals 4, ,stamens 4, Samaras 5-7m, wings spreading obtusely. nutlets subglobose, 3-3.5cm × 0.8-1.2cm, strongly veined
2n= 26.
Flowering late May to June
Fruting mid Sept to early Oct.
Distribution Northeastern China, Far eastern Russia; far North, North (Baekdudaegan)

Russia Flora: Bush up to 5(-7) m height. Top. poch. 4-5 mm long, elongated- conical, dark cherry, with very fine pubescence. Pob. purple - red or brownish - green, glabrous, covered with b. m . thick layer of transparent cuticle. Leaves 3-5-lobed , 6-10 cm long ., 5-9 cm wide., With a heart-shaped or truncated base, incised - serrate or large - biserrate , thin, with scattered hairs from above, from below along the veins (especially in their corners ) densely hairy ; avg. lobe much larger than the top side, lower lobe often have the appearance of large teeth ; upper lobe at the tops with long pointed points. Seed wings 3-12 cm long, shorter or longer l . layer., finely fluffy. Male- few-flowered with small fluffy flowers; male flowers yellow, with 5 petals. Female’s social services few-flowered brushes with finely fluffy axes and flowers; female col. yellow, 4-5 mm in diam., half open ; seeds about 3 mm long, obovate; goblet. somewhat shorter seeds, ovate. Lionfish about 3.5 cm long., diverge at an obtuse angle. 2n=26 (Gurzenkov , 1973 ).

Ussur. (c., y.) — In the undergrowth of cedar and black-fir-broad- leaved forests, rarely rises into the belt of dark coniferous forests. Color. V. Decorative, rare in landscaping. Honey plant.

Distribution: Yap. - Keith. (North - East China, peninsula Korea). - Described from Primor: " In silvis ad fontes fl. Li-Fudin, C. Maximowicz" (type - LE) .