Quercus hypoleucoides, the silverleaf oak or the whiteleaf oak is a North American species of trees or shrubs in the beech family. It grows in the southwestern United States and northern Mexico. Quercus hypoleucoides, though usually seen as a shrub, can be found to be a full-sized tree, 30 feet (9 meters) tall in areas where it receives lots of water. Quercus hypoleucoides can be distinguished from other oaks by its lanceolate leaves which are dark green on top but silver white on the lower surface.