Gambel Oak is a low-growing drought-tolerant oak native to the intermountain western US. Very drought and fire tolerant once established, takes browsing like a champ. Produces lots of acorns at an early age, seemingly every year without a year off, very productive similar to dwarf chinkapin oak, but with a more traditional white oak shaped leaf. Acorns are 1/2 inch wide by 1 inch long.
6 to 10 inch tall, bare root, 2nd year seedling.
Photo credit: Grand Canyon National Park, CC BY 2.0 <https://creativecommons.org/licenses/by/2.0>, via Wikimedia Commons