Similar species: New England Aster (Symphyotrichum novae-angliae) - larger overall, leaves larger. Heath Aster (Symphyotrichum ericoides) - white flowers and narrower/smaller leaves.
PLEASE NOTE: A coloured Province or State means this species occurs somewhere in that Province/State.
The entire Province/State is coloured, regardless of where in that Province/State it occurs.
(Range map provided courtesy of the USDA website
and is displayed here in accordance with their
Policies)