Plant: Tree (mature specimens to 10 m) Leaves: leaves alternate, unequal at base, somewhat leathery, with prominent veins underneath, rough above Flowers: flowers small, unisexual. Notes: Bark warty.Stipules deciduous.Branches terate. References: Kearney & Peebles; Arizona Flora. McDougall; Seed plants of N. Arizona. Hickman, ed.; The Jepson Manual. ASU specimans.