Is this a form of wild buckwheat in a different blooming stage from ones you identified for me another time, grown in dry, sandy soil?
this is in the buckwheat family, Polygonaceae, but is not wild buckwheat. I had a little trouble with this one, but it appears to be a fruiting Rumex hastatulus plant, or sheep sorrel, but I cannot be certain because I would need to see the lowest leaves to be sure. If the lowest leaves have two lobes pointed 90 degrees from the main lobe then I may be right. The problem for me is that I would have thought this was long gone, being an early spring flower. So, that’s the best I can do at this time.
Steven Hill, Ph.D. Botanist SCNPS