Tridax

Tridax is a genus of flowering plants in the family Asteraceae.
Tridax is native primarily to the tropical regions of North and South America. Tridax procumbens has become naturalized in the southern United States and is considered a noxious weed in some places.
; Species
; formerly included
see Calea Layia Sabazia Tridax accedens - Calea verticillataTridax ehrenbergii - Sabazia sarmentosa Tridax gaillardioides - Layia gaillardioides