I'm not sure which kind these are; for me, all composites of every colour, are tricky to identify. Perhaps these are Smooth Asters, which are common in moist prairie areas.
|Picture showing the whole plant,|
stems, leaves and flowers.
|Close-up of flowers.|
Prairie Wildflower: Asters
Where: Condie Nature Refuge, Regina, Saskatchewan.
Photo Date: Both taken August 27, 2011.