Joshua tree, yucca palm, tree yucca, and palm tree yucca (Yucca brevifolia, Asparagaceae, subfamily Agavoideae) is native to southwestern North America in the states of California, Arizona, Utah and Nevada. It is also called izote de desierto.
'The name Joshua tree was given by a group of Mormon settlers who crossed the Mojave Desert in the mid-19th century. The tree's unique shape reminded them of a Biblical story in which Joshua reaches his hands up to the sky in prayer.' More details about this amazing plant at en.wikipedia.org/wiki/Yucca_brevifolia