This is a woody, evergreen shrub, averaging 2 to 5 feet (0.6-1.5 m) tall and wide, sometimes to 10 feet, with leathery, grayish-green leaves. The pale green female flowers of this dioecious species are borne singly at each leaf node. The yellowish-green male flowers are borne in clusters. Plants bloom in winter and female plants ripen their acorn-shaped and -sized seeds in summer. Native to the Sonoran Desert.