Dimondleaf Willow - Salix planifolia
Shrublike or a tree to 28 feet, with multiple branches, this is a willow of high elevations where it grows alongside streams, often in boggy areas, to elevations of 12,000 feet. It is found from Labrador and Alaska to New Mexico, a wide range even for a willow. The leaves are narrow, sometimes widest above the middle, and up to 5 times as long as wide; juvenile leaves are often hairy. The leaf margins may by rolled or sometimes wavy, glossy above and hairy beneath. The catkins flower before the leaves open, often in late spring or early summer.