Sandmat, Prostrate Spurge (Chamaesyce maculata)

Spurge family (Euphorbiaceae)8/4/12 PL DE
Many species, and many synonyms to confuse the issue.
http://www.illinoiswildflowers.info/weeds/plants/prostrate_spurge.htm

http://plants.usda.gov/java/profile?symbol=CHNU9&photoID=eunu_004_ahp.jpg