I looked through my big edible plant book (hopefully I looked thouroughly enough), and the only thing I could find that whose leaves and looked remotely similar to these pictures is monkeyflower. My second guess would be a species of mallow - whose flowers look very similar, but the leaves don't look like they match up with my specimen. However, I noticed by looking on Google images that some species of mallow do have leaves that can look similar to the leaves of my specimen. http://www.flickr.com/photos/76284694@N02/8977216310/ http://www.flickr.com/photos/76284694@N02/8976022199/ http://www.flickr.com/photos/76284694@N02/8976024249/