Lotus corniculatus.

Thank you tyrlych. Any suggestions on how to get rid of it or at least control it. We have a two acre property and it is quickly taking over.

This was once sold as a cover/green manure crop, although to day it is considered an invasive plant species where it is not native. Its prostrate growth pattern makes if difficult to control through mowing, but mowing the desireable grasses high can help crowd it out.

thanks kimmsr. Oops, we have been actually doing the opposite, cutting the grasss very short in order to mow this weed down before it seeds and spreads further. With the drought we have been having, the grass isnt growing only these weeds.