northern bog aster, rush aster —  Aster borealis {composite family — Asteraceae (Compositae)}
Flora of the Yukon Territory, Cody, p. 567a
 { 1/80 sec, f10.0} – {Hidden lakes, Whitehorse, Yukon} – {23/08/08 Saturday, August 23, 2008; 3:50:53 PM}