Life (root) » Plantae (plants) » Tracheophyta (Vascular Plants) » Angiospermae (Flowering Plants) » Magnoliopsida (Dicots) » Malpighiales (nances, willows, and allies) » Salicaceae (willow family) » Populus (poplars, cottonwoods, and aspens) » Populus deltoides (eastern cottonwood)