Identificaciones de teresameier

Possible Harebell (Campanula rotundifolia): I am certain about the Genus but I see several different species posted from this area and I am not skilled enough to distinguish between them, purple, limestone alvar, Burnt Lands Provincial Park, ON, June 10/21

Possible Harebell (Campanula rotundifolia): I am certain about the Genus but I see several different species posted from this area and I am not skilled enough to distinguish between them, purple, limestone alvar, Burnt Lands Provincial Park, ON, June 10/21