The following plant may be identified incorrectly: Krigia caespitosa of the family asteraceae:
This plant is a bit difficult to nail down. Granted I'm strictly using visual comparison to identify the plant on this page, which by itself leave all my efforts suspect. However, this genus seems to offer special difficulty; even to the professionals.
Regardless the label that we've assigned the linage of this specific plant, the above photo was taken between Flora, MS and Yazoo on Hwy 49 in March of '07 and this particular plant is a good example of the head flower arrangement.