WHAT FLORIDA NATIVE PLANT IS BLOOMING TODAY?: COMMON YELLOW WOODSORREL; CREEPING WOODSORREL (Oxalis corniculata)
While there are many oxalis species which grow in Florida, the two that are yellow are the natives, while the pink and purple are non-native.
Low growing. Attracts pollinators, seeds feed ground feeding birds. Said to be edible in small quantities.
Native American Ethnobotany for this genus: http://herb.umd.umich.edu/herb/search.pl/?searchstring=Oxalis+corniculata
Where does it grow in Florida? http://www.florida.plantatlas.usf.edu/Plant.aspx?id=2759