A worldwide community photographing and learning about wildlife
Symphyotrichum lateriflorum
http://ontariowildflowers.com/main/speci... ... or ... http://perverdonk.com/Wild%20Flowers/ ... They're either Frost Aster or Calico Aster but, according to the 2nd link here, it's Frost Aster. His pictures show Calico Aster petals are curly whereas Frost Aster petals are straight. But, the first link shows straight petals as Calico Aster so, I don't know.... at the 2nd link, click on "Aster," listed alphabetically on the left. It takes you straight to these flowers.
They're either Calico or Frost Aster. See my explanation under Description above ^. I think they are Frost Aster.
I found it :) This is fun. It's Calico Aster ... http://www.hutchmartin.com/monarch-in-ca...