Quercus turbinella

[7] Quercus turbinella is a shrub growing 2–5 metres (6+1⁄2–16+1⁄2 feet) in height but sometimes becoming treelike and exceeding 6 m (20 ft).

The branches are gray or brown, the twigs often coated in short woolly fibers when young and becoming scaly with age.

The thick, leathery evergreen leaves are up to 3 centimetres (1+1⁄4 inches) long by 2 cm (3⁄4 in) wide and are edged with large, spine-tipped teeth.

The males catkins are yellowish-green and the female flowers are in short spikes in the leaf axils, appearing at the same time as the new growth of leaves.

[6] Many species of animals use it for food, with wild and domesticated ungulates browsing the foliage and many birds and mammals eating the acorns.

Quercus turbinella
Arizona shrub oak acorns. Quercus turbinella.