At last I know one: The lower, pinkish one is clover. I’m guessing the one on top is a daisy, but I’m not sure. This time I scanned at a higher resolution, and in the close-up of the daisy, you can see aphids clinging to the stem.
Update: By consensus (see comments), the upper photos are of daisy fleabane.
Picked on this morning’s dog walk. I don’t know the names of any of them (help me out here, Internet). Notice the free spider beetle that came with flower #3.
Update: Sarah Blackwood reports that the first photo here is of spiderwort.
Pamela Leo reports that the third photo here is white snakeroot.
Here is today's New York City wildflower, which I have braved dog pee and allergies to scan for you. Identifications welcome.