Quercus imbricaria is a medium-sized tree growing to 20 meters (67 feet) tall, with a trunk up to 1 meter (40 inches) in diameter (rarely 1.4 meters, 56 inches). It is distinguished from most other oaks by its leaves, which are shaped like laurel leaves, 8–20 cm (4-10 inches) long and 1.5-7.5 cm (0.6-3.0 inches) broad with an untoothed margin; they are bright green above, paler and somewhat downy beneath. The fruit is an acorn, 9–18 mm long and wide with a shallow cup; they are mature about 18 months after pollination. They are an important food for squirrels and some birds.