Life (root) » Plantae (plants) » Tracheophyta (Vascular Plants) » Angiospermae (Flowering Plants) » Liliopsida (Monocots) » Asparagales (agaves, orchids, irises, and allies) » Asparagaceae (agave and allies) » Agavoideae » Yucca (Yuccas) » Yucca brevifolia (Joshua Tree) » Yucca brevifolia jaegeriana (Eastern Joshua Tree)