Coreopsis delphiniifolia, the Larkspurleaf tickseed, is a North American species of perennial tickseeds in the sunflower family. It is native to the Southeastern United States, primarily Georgia and the Carolinas with a few outlying populations in Tennessee and Virginia. It is listed as an endangered species in Tennessee. Coreopsis delphiniifolia is a perennial herb up to 90 cm (3 feet) tall with yellow flower heads.