Rigid Goldenrod
Oligoneuron riddellii
From what I've read, Goldenrods are one of the best caterpillar host plants. In the photos, you can see they are also popular with the adult pollinators.
I think the environment should be put in the category of our national security. Defense of our resources is just as important as defense abroad. Otherwise what is there to defend?
Robert Redford
Yosemite National Park dedication, 1985