Purslane, Portulaca oleracea.

Double thanks to you tyrlych from our household! I had no idea we had SO much omega-3 fatty acid growing in our garden!! LOL After some research it appears some people actually eat this weed and consider it edible landscaping. We're learning new things all the time. Thanks again.

You are welcome.
It is indeed edible, both fresh and pickled, -- it is not what I read somewhere, its my own experience :-)

It may be purslane, it may not. It would be wise to be sure before eating any. Break a stem or two and see if there is a milky, white sap. If there is then it is *not* purslane, not edible, and in fact toxic.

http://www.wildmanstevebrill.com/Plants.Folder/Purslane.html

A quote from that site:
"Beware of spurge, a different-looking poisonous creeping wild plant that sometimes grows near purslane. The stem is wiry, not thick, and it gives off a white, milky sap when you break it. If you're very careless, you may put some in your bag along with purslane, because they sometimes grow together on lawns, gardens, and meadows."