Hymenothrix wrightii, Wright's hymenothrix or Wright's thimblehead, is a North American species of flowering plant in the daisy family. It grows in northwestern Mexico (Sonora, Chihuahua, Baja California) and the southwestern United States (western Texas, Arizona, New Mexico, far southern California).Hymenothrix wrightii is a perennial herb up to 60 cm (2 feet) tall. One plant produces 6-8 flower heads per stem,in a flat-topped array.