We need to place explanation for citation of teh Atlaas on the hoempage.
Might I suggest:
Liu, X, R.K. Peet and A.S. Weakley. Atlas of the Flora of the Southeastern
United States. University of North Carolina Herbarium (NCU), University of
North Carolina, Chapel Hill, NC. http://www.herbarium.unc.edu/seflora/.
Observed [Month, Day, Year].