Yucca brevifolia is a plant species belonging to the genus Yucca. It is tree-like in habit, which is reflected in its common names: Joshua tree, yucca palm, tree yucca, and palm tree yucca. This monocotyledonous tree is native to southwestern North America in the states of California, Arizona, Utah, and Nevada, where it is confined mostly to the Mojave Desert between 400 and 1,800 m (1,300 and 5,900 ft) elevation.

Source: Wikipedia