WHAT FLORIDA NATIVE PLANT IS BLOOMING TODAY?: AMERICAN BURNWEED; FIREWEED (Erechtites hieraciifolius)
Tall weedy annual plant that has prolific amounts of seeds, so very aggressive. Buds never really open to reveal a flower; seedheads resemble that of dandelion or wild lettuce.
Listed in Floridas Incredible Wild Edibles by Dick Deuerling as a salad ingredient (leaves) or potherb although there are mixed reviews on taste: http://www.eattheweeds.com/erechtites-hieracifolia-edible-pile-driver-2/
The lovebug seems to be onboard with it.
Where does it grow in Florida? http://www.florida.plantatlas.usf.edu/Plant.aspx?id=907