Scrub Live Oak
Quercus turbinella
Emory Oak
Quercus emoryi
Medium to large shrub with rather spiny leaves. Acorns usu. present. Oval leaves tough, canescent, evergreen. Annual of mid summer to autumn frequently in deep sandy soils Fairly common at upper elevations of the Sonoran Desert in transition to chaparral. Detailed Description
Medium sized tree, mostly at elevations above the Sonoran Desert, but a few trees exist in deep shady canyons. Oblong leaves dark green and shiny. Prickles on leaf margins. The image is hosted at Wikipedia Detailed Description