It was the only one I noticed in the entire preserve. It grew in a sandhills habitat, surrounded by saw palmetto, gallberry, fetterbush, rusty lyonia, and longleaf pine. Stood a little more than 2'.
Thanks in advance!
SOLVED: Found this at Econ River Wilderness Area
You plant looks as if it may be a Melanthera. There are four species found in Florida. It is not Melanthera nivea, but perhaps it is one of the others: Melanthera parvifolia, angustifolia, or ligulata. Photos of those three are hard to find. I may be completely wrong, but the flower structure reminds me of Melanthera nivea, hence my guess that it is in the same genus.
I go with Melanthera. In parafixia corolla lobes are much longer.
@Darwiniensis: I will revisit the site and do some checking on the leaves to see if they match the description I found... looks quite like a young Palafoxia feayi. Thanks for the tip!
@meltonw: My original thoughts were leaning towards Melanthera, but the stem is round and the whorled leaves were throwing me for a loop. I think I did find a M. lingulata at the site, though... a bit out of its range.
Singhg45, I think you are right that most species of Palafoxia have disc florets with well developed corolla lobes. However, please have a look at Palafoxia feayi here: http://www.regionalconservation.org/ircs/database/plants/PlantPage.asp?TXCODE=Palafeay
Corolla lobes in that species are much reduced.