Erigeron divergens
An Erigeron. Looks a lot like the other erigerons.
A pseudanthium at Head of the Ditch Campground, 28 Sep 2006.
Immature pseudanthium showing phyllaries, at Head of the Ditch Campground, 28 Sep 2006.
A cauline leaf at Head of the Ditch Campground, 28 Sep 2006.