Acer opalus subsp. obtusatum
AY-ser oh-PAH-lus ob-tu-SAH-tum
Native to (or naturalized in) Oregon:
- Broadleaf, deciduous medium-sized tree or dense shrub, to about 30-40 ft (10-13 m) tall with a broad, rounded crown; trunk, brown-green. Leaves opposite, simple, 10-12 cm wide, dark green and smooth above, lower surface gray-green, pubescent 5-lobed, lobes short, very rounded and blunt, irregularly toothed; petiole yellow. Flowers yellow, numerous, in short, hanging clusters (umbles). Fruit (samaras) small, 2.5-3 cm long, nutlets round and green (often parthenocarpic), wings brown, held at right angles.
- Sun to part shade.
- Hardy to USDA Zone 5 Native to Hungary, the Balkans, southern Italy, and Morocco.