That appears to be it. Thanks.

If the flower is associated with those palmate leaves on the ground it might be a buttercup; but it looks more like it's part of the larger strap-like leaves. And the poster says it looks like a Dandelion. My suggestion would be Krigia biflora, Two flowered Cynthia. WW Here is a link that might be useful: Krigia biflora

What a fun project. And nice pictures, although not all of them show enough of the plant to be sure of an ID; however most of them look right. The only one I see that is definitely wrong is the June 10 one listed as Enchanter's Nightshade - it looks like some species of Veronica. And I think that your June 15th one listed as Blackberry is actually Black Raspberry, Rubus occidentalis. As for your TBD, July 19 is probably Heal-all, Prunella vulgaris; June 22 is some kind of wild onion, Allium spp, and the June 14 yellow composite might be Krigia biflora, although you really need to see the whole plant to be sure. And I strongly second ESH's suggestion that you include the scientific name with the common name; there are just too many common names to be sure which plant you're talking about. (If you can't be sure of the species just put spp - as in, Allium spp, meaning 'some species of Allium'. Having said that, although the Peterson guide you mention is my favorite wildflower ID book (because it's complete, well organized, and the pictures really look like the plants) it was published in 1968 and hasn't been updated and a lot of the scientific names have been changed. I always check with a more recent source for the Latin name. WW

You, John Cunliffe, harbor a very dangerous attitude. Apparently you knowledge of ecology is not only lacking, it's completely non-existent. I suggest you look up the meaning of terms like "monoculture" and "trophic cascades" and you very much need to look into how seriously detrimental invasive weeds are entire ecosystems, resulting in a loss of insect and animal habitat and causing decline of species in these areas. Plants like orange hawkweed destroying native plant communities is not in any way, shape, or form mother natures attempt to spread a species. Introduction of exotic plants is completely a side effect of human activity, either by accident or on purpose. "I wonder if someone was seed bombing the neighborhood... not big deal if they did, after all have done it many a times my self with wild flower seed bombs." If your are knowingly and purposefully spreading invasive species into wild areas, you deserve to be at least cited, if not prosecuted.