A yucca which grows as a tree and has clusters of spiky leaves, native to arid regions of south-western North America.
Yucca brevifolia, family Agavaceae.
It searches among the yucca cactuses and Joshua trees for a lonely radar station atop a mountain peak....
Add to this the abundance of dangerous flora and fauna - cacti, yucca plants, Joshua trees, rattlesnakes, scorpions, and spiders - and the propensity for injury when training on ground combat skills increases dramatically.
Its vascular structure and secondary growth are not unlike those found in the Joshua tree.
Origin
Mid 19th century: apparently from Joshua (Josh. 8:18), the plant being likened to a man brandishing a spear.