Triodanis biflora - commonly known as Southern Venus's Looking-glass or Small Venus's Looking-glass. Native to the Carolinas and Georgia. I tried to do a mirror shot with it, but failed miserably. More info on this wildflower here - http://namethatplant.net/plantdetail.shtml?plant=4292
There is a very similar but different version of this flower I also found. Will come shortly.
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