What are physical characteristics of the desert ironwood?

Desert ironwood (Olneya tesota) is a dense, slow-growing tree that can reach heights of up to 30 feet. Its bark is thick and grayish-brown, while the leaves are small, leathery, and usually have a dark green hue. The wood is exceptionally hard and heavy, giving it its name, and it produces clusters of small purple or lavender flowers. Additionally, the tree has a broad, spreading canopy, providing shade in its arid environment.