Trees of Alabama and the Southeast

Lisa Samuelson, Ph.D.
School of Forestry and Wildlife Sciences
Auburn University

HAZEL ALDER
Alnus serrulata
Betulaceae

Leaves are simple, alternate, deciduous, obovate to elliptical, with finely toothed margins. Twigs are brown-gray with reddish hair. Buds are green to maroon with a "stalked" appearance. Bark is brown-gray, smooth, fluted, and sinewy. Fruit is a nutlet enclosed in a woody cone that persists on branches. Form is a shrub or small tree up to 6 m (20 ft) in height, forming thickets. This nitrogen-fixing species is found on moist to wet areas in the eastern U.S. and is intermediate shade tolerance. This tree is used in waste site reclamation but it can be very aggressive on water margins.

Photographs by Mike Hogan.

To view examples, click on the thumbnail below: