Quercus gambellii

Also known as rocky moutain white oak small tree to 6 m (20 ft) tall, or a thicket-forming shrub. bark light gray, furrowed into scaly ridges. leaves alternate, elliptical or oblong, deeply 7-11 rounded-lobed about halfway to midvein, tapering to base, 5-15 cm (2-6 in) long and 3-8 cm (1.2-3.1 in) wide, shiny dark green above, pale green and hairy below. fruits are acorns maturing in the first year, egg-shaped, about 15 mm (0.6 in) long, with cup covering about 1/3.