Native to (or naturalized in) Oregon:
- Deciduous tree, to about 30 ft (10 m) tall. Leaves simple, opposite, oblong-ovate, 5-8 cm long, 2 or 4 short lobes near base, truncate to subcordate at base, margin irregularly serrate, apex acuminate, blue-green above, paler below, pubescence on lower vein axils when young; petiole 1.5-2 cm long. Flowers yellowish white, 5-8 per erect cluster (raceme) 3-5 cm long. Fruit glabrous, on stalks of about 6 mm long, wings spreading nearly horizontal, 2-2.5 cm long.
- Part shade, moist soil. Reportedly not easy to cultivate (van Gelderen and van Gelderen, 1999).
- 'Veitchii' is a variegated cultivar.
- Hardy to USDA Zone 6 Native to moist regions of central and southern Japan.