Mystery Wildflower #6 or 7

Okay. I guess I've lost count and truely I haven't a clue what this is - although aster of some variety is my first guess with a guess of buttercup family for the second - although that accounts for a good chunk of what is out there. Its been so wet that everything is a bit floppy. I really really need to get some more twine and actually stake some flowers or rather tie them to the stakes I've so carefully placed. My zebra mallows, in particular, need this to be done before they wound themselves flopping over ever time they get wet and the ditto for the pink mallows.