WHAT FLORIDA NATIVE PLANT IS BLOOMING TODAY?: TALL YELLOWEYED GRASS (Xyris platylepis)
Despite the flower color it is still called yelloweyed grass. This is one of two species in this genus that can have white or yellow flowers (the other is X. caroliniana).
There are 24 Xyris species are listed as native to FL (ISB).
Learn: FNPS Palmetto article http://www.fnps.org/assets/pdf/palmetto/v18i2p14lee.pdf
Native American Ethnobotany for this genus: http://herb.umd.umich.edu/herb/search.pl?searchstring=Xyris
Where does it grow in Florida? http://www.florida.plantatlas.usf.edu/Plant.aspx?id=2389
Seeds for a similar species are available from Florida Wildflowers Growers Coop: