Species of shrub
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Salix humilis, known as prairie willow, is a species of willow native to the United States and Canada, east of the Rockies.
It is a shrub, 2–12 feet tall, which often forms thickets. The stems are yellowish to brown. The gray-green to blue-green foliage has insignificant fall color.
Male and female flowers are found on separate plants. The green silky catkins appear before the leaves emerge in spring.
References.
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