Native to (or naturalized in) Oregon:
- Deciduous tree, 20-30 ft (6-9 m) tall, similar spread, bark tinged with purple when young, rough and fissured when older. Leaves simple, opposite, 7-10 cm wide, 5-7 triangular-shaped lobes, basal lobes drawn out, base sometimes truncated, dark green above, paler below, fall color yellow to reddish, new leaves purplish; milky sap exuded when petiole broken. Flowers yellow-green, in 6-8 cm wide, upright clusters (corymbs). Fruit (samaras) 3-4 cm long, forming about a 90° angle.
- Sun to part shade. A relatively tough tree, heat tolerant. Promoted as tree with good fall color in warm areas.
- Hardy to USDA Zone 4 Native to the forests of northern China (used as a street tree) and Korea and the Amur region of Siberia in Russia.
- truncatum: cut off square, a reference to the blade base
Acer truncatum × Acer platanoides. Keith Warren, at J. Frank Schmidt Nursery, Boring, Oregon, introduced the following two trees from this cross in 1989.