Arizona White Oak
Native to (or naturalized in) Oregon:
- Broadleaf evergreen (or nearly so) shrub at high elevations, but in low canyons, a tree to 30-60 ft (918 m) tall, irregular spreading stout branches, round-topped symmetrical crown. Leaves alternate, simple, leathery, 4-7.5 cm long and 2-4 cm wide, oblong or obovate, margin spiny or more or less entire, base rounded or heart- shaped, parallel veins, blue-green above and duller below. Male flowers are borne in yellowish-green catkins 5-7.5 cm in length, female flowers on short stems. Acorns solitary or paired, 2-2.5 cm long, stalkless or nearly so, enclosed by a deep cup with fine hairy scales; mature in 1 year.
- Hardy to USDA Zone 7 Native to Arizona and east to New Mexico and southwestern Texas, and south into Mexico.