Member of the pea family. The flower head is round, and pinkish purple, distinguished from the similar zigzag clover by the hairs present on the stem and around the flower. I found this on the way home from work today.
Very common in meadows, roadsides, hedgerows, etc. I found this one next to the sidewalk.
Testing out my new phone's camera! Not too bad, I think. Will use it to take snaps on my way to and from work from now on, I think.