Leaves don't quite look like wood anenome or mountain thumbleweed.
Time for more noxious weed control, we worked at this site two years ago
I had no idea there were so many in Colchester Bog, near midway through the boardwalk
These flowers seem a bit early; most of the plants I've seen nearby in the past few days were flaccid in the muck.
On the top of a small ravine with an equally small creek.