Hi bhart90,
to All Things Plants!
That reminds me somewhat of Virginia Buttonweed, there are two images in our database for comparison:
Virginia Buttonweed (Diodia virginiana)
And, more photos can be seen on this page:
http://www.missouriplants.com/...
If you can give a general location such as Southeastern U.S., Northwestern U.S., Europe, Australia etc. I bet one of our very knowledgeable members would recognize it and be able to give you an exact ID.