Chromolaena frustrata called Cape Sable false thoroughwort or Cape Sable thoroughwort, is a rare North American species of Flowering plant in the family Asteraceae. It is found only in southern Florida, on the Florida Keys, inside Everglades National Park, and other nearby low-lying areas. It grows on coastal rock outcrops, the edges of hammocks, and other undisturbed sites at elevations less than 10 meters (33 feet) above sea level.Biota of North America Program 2014 county distribution map
Chromolaena frustrata is a perennial herb rarely more than 25 cm (10 inches) tall. Flower heads are produced in groups of 2–6. The heads contain blue or lavender disc florets but no ray florets.Flora of North America, Cape Sable false thoroughwort, Chromolaena frustrata (B. L. Robinson) R. M. King & H. Robinson
References
External links photo by Keith Bradley Atlas of Florida Vascular Plants