Trees of Alabama and the Southeast

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

Pin Oak (Red Oak)
Quercus palustris

Leaves are simple, alternate and deciduous with 5-7 bristle-tipped lobes, and deep U-shaped sinuses. The base of the leaf is often truncated. Terminal buds are red-brown, ovoid, and smooth. Branches are often at 90 degree angles to the trunk in the lower crown and branches may have small, "pin-like" lateral branches. Bark is gray and smooth, becoming shallowly fissured with age. Fruit is an acorn 1/2 inches long with a mahogany striped nut and saucer-like cap covering the base of the nut, maturing in two seasons. Form is up to 36 m (120 ft) in height and 1.5 m (5 ft) in diameter with branches forming 90 degree angles. Pin oak is planted as a shade tree in Alabama and is intolerant of shade.

Photographs by Mike Hogan.

To view examples, click on the thumbnail below: