Red Clover (Trifolium pratense) Tentative ID
This may be a Red Clover. These flowers are abundant in mid-May around the detention ponds on the south side. Red clover was brought to America in the 1500s by European farmers and is now used as a cover crop. It is a legume, and over-wintered red clover can produce 2 to 4 tons of dry matter and fix 70 to 150 lb. of nitrogen per acre.