Bur-marigold
Bur-marigold is an emersed plant occasionally found in the marshes of the peninsula west to the central panhandle of Florida. There are seven species of Bidens in Florida (Wunderlin, 2003).
Bur-marigold is a native found in the eastern third of the U.S. and the southern tier of states to California (Kartesz, 1999).