Yucca rostrata, also called Beaked yucca, is according to Wikipedia a tree-like plant belonging to the Yucca genus native to southern U.S. and northern Mexico.Yucca rostrata grows to 4.5 meters (15 feet) tall. It has thin, stiff leaves which spread from a symmetrical rosette. The inflorescence of small and white flowers appears in autumn. When it is found in the desert it conserves water over time like a cactus.