Native to (or naturalized in) Oregon:
- Broadleaf deciduous tree, to 50-70 ft tall and 20-40 ft wide (~15-20 × 6-12 m), pyramidal when young, becoming oval, open and irregular with age. Bark thin, gray tinged with green; on old tree, fissured, dark brown with red. Leaves alternate, simple, broad-ovate to elliptic,7.5-10 cm long, tip sharp pointed, base truncated to broad wedge-shaped, lower margin entire, upper part has coarse, dentate teeth, upper surface dark green, lower surface gray pubescent; petiole 2.5-6 cm long. Males (brown and red) and females (green) flowers occur in hanging, 5-7 cm long downy catkins; they apper before the leaves in early spring. Fruits are a string of green, downy capsules which release cottony seeds.
- Sun to part shade. Best in fertile, moist soil. Fast growing.
- Hardy to USDA Zone (2) 3 Native from Nova Scotia to Ontario and Minnesota, south to North Carolina, Tennessee, Illinois and Iowa.
- grandidentata: having big teeth; grandi, big, and dentata, teeth.