Brickellia simplex (Sonoran brickellbush) is a North American species of flowering plants in the daisy family. It is native to northern Mexico (Chihuahua, Sonora, Coahuila) and the southwestern United States (New Mexico, Arizona). Brickellia simplex is a branching shrub up to 60 cm (24 inches) tall, growing from a woody caudex. It produces many small flower heads with yellow disc florets but no ray florets.