A species of monoecious, deciduous shrub.
It blooms in very early to mid spring, producing hanging male (staminate) catkins 4 to 8 cm (1+1⁄2 to 3+1⁄4 in) long, and clusters of 2–5 tiny female (pistillate) flowers enclosed in the protective bracts of a bud, with their red styles sticking out at the tip. The male catkins develop in the fall and remain over the winter. Each male flower on a catkin has a pair of bracts and four stamens.
Up to 5 metres in height
At least 30 years
Native to the eastern and central United States and extreme southern parts of eastern and central Canada.
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Images by Melissa McMasters from Memphis, TN, United States - Hazelnut, CC BY 2.0, https://commons.wikimedia.org/w/index.php?curid=47714938