Salix barclayi or Barclay's willow is a species of willow native to North America, found primarily in the Northwestern area of the United States and Canada. It grows near lakes and streams at elevation. It is a shrub, that can grow up to 2.5 m. (8 ft.) tall and tends to be slender. Leaves are elliptic to obovate, 2–6 cm long and 1-2.5 cm wide. Leaves are hairy when young, with midrib hairs lasting into maturity. Catkins are on short, leafy peduncles. Staminate catkins are 3 cm long with 2 stamens, while pistillate catkins are 2.5–5 cm long and glabrous.