Many of the trees and shrubs were used by native people for food, medicine, building materials, clothing, etc. The following is not a complete list of plants found here, but includes the more common trees and shrubs. Learn about each of these plants below. Trees and Shrubs - Tonto National Monument (U.S. National Park Service) -The wood was use for lumber and sycamore vigas were found in both the Upper and Lower Cliff Dwellings. has dark green leaves with two opposite leaflets joined at the base and yellow flowers. The plant gives off a characteristic odor of creosote, from which the common name derives. The smell is often associated with the smell of rain.