An enduring desert survivor this rugged tree grows to about 10m tall and has rough dark grey bark. Branchlets are grey-green, smooth and cylindrical, in sections each about 10mm long.
Medium sized tree to 15m, only found in desert areas. Juvenile trees are columnar in shape with prickly foliage. Older, adult trees are spreading with drooping foliage. Bark is thick, rough,
A shrub or small tree with rough, furrowed bark. Foliage can be drooping or held erect. Branchlets have whorls of 6-9 teeth at each joint. Female flower is pictured.