Life (root) » Plantae (plants) » Tracheophyta (Vascular Plants) » Angiospermae (Flowering Plants) » Magnoliopsida (Dicots) » Fabales (legumes, milkworts, and allies) » Fabaceae (legumes) » Faboideae » Amorpheae » Psorothamnus (indigo bushes and smoke trees) » Psorothamnus polydenius (Nevada smokebush)