Helenium quadridentatum Labillardière. Hab: Moist soils of pond edges, streambanks, and ditches. Dist: AL west to TX, south to Mexico and Central America; Cuba. The occurrence in SC reported by Rydberg (1915), Small (1933), and Kartesz (1999) is likely an introduction.
Origin/Endemic status: Native
Synonymy: = FNA21, K1, K3, K4, Mex, S, SE1, Bierner (1972); = n/a – C, F, Pa, RAB