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A medium-sized, exceptionally flat and wide lizard with short, stubby, horn-like scales projecting from the back of the head. A wide gap separates the bases of the two central horns. Several isolated, pointed scales project from the back. Each lower side of the body is edged with a single fringe of enlarged, pointed scales. Base coloration is tan, yellow-brown, orange-brown, reddish brown, or gray and usually matches the soil on which the animal lives. There are two large, dark blotches on the neck. The back is usually marked with a series of dark, irregular blotches or crossbars. The underside, particularly the chin, is often mottled with gray and the throat and chest may have tints of yellow-orange or reddish orange. The broad gap separating the two central horns of this lizard distinguishes it from other horned lizards in Arizona.