Native to (or naturalized in) Oregon:
- Broadleaf deciduous shrub or small tree, to about 20 ft ( 6 m) tall, twigs purple becoming red. Leaves, magnolia-like, alternate, simple, elliptic, ovate, or obovate-oblong, 25 × 11 cm (the largest of any willow), leathery, base rounded or subcordate, margin entire to serrulate, dark green above, midvein often purplish red. Dioecious -- male and female catkins on separate plants, each catkin to 10 × 1.5 cm. Female catkin expands to 25 cm at fruit maturity, individual fruit small, only about 6 mm.
- Sun to partial shade, nearly any reasonable soil, best if moist.
- Hardy to USDA Zone 6. Native to China, in northern and western Sichuan, found near water, in woodlands on mountain slopes; 2,100-3,000 m. (6,000-9,840 ft).