Several types of oak trees are found in the Oak Woodland biotic community at 4500-6000 feet in elevation. These are low in density at lower elevations with an understory of grasses. At higher elevations, the canopy can be closed and an understory of shrubs are common. The Oak Woodland may be interspersed with the Desert Grasslands at lower elevation as well. Emory Oak and Arizona White Oak are seen in the lower elevations, while Silverleaf Oak and Netleaf Oak are more found at higher elevations. Shrubs include Arizona Madrone and Manzanita. The Manzanita is a slow-growing woody shrub, noted for its characteristic red bark. Small round leaves tip the branches and tiny pink bell-shaped flowers grow in small clusters. Other plants include Agave, and Beargrass, and a moderate cover of perennial grasses such as Bullgrass are also present. The presence of native grasses contributes to frequent fires, which can be extreme when non-native grasses are present. Our next stop up the mountain is the Pinyon Juniper Woodland.
Source: https://www.fs.fed.us/wildflowers/beauty/Sky_Islands/communities/evergreenoak.shtml. Accessed 04/02/2022