Salix eriocephala
Salix eriocephala, known as heart-leaved willow or Missouri River willow, is a species of willow native to a large portion of the temperate United States and Canada. It is usually found as a narrow shrub or small tree with multiple trunks growing to a height of . It has dark gray, scaly bark with thick lance-shaped leaves that are hairy underneath. The silky catkins appear before the leaves in early spring.