purple reedgrass —  Calamagrostis purpurascens purpurascens {grass family — Poaceae (Gramineae)}
Flora of the Yukon Territory, Cody, p. 080a
grass is?  { 1/320 sec, f3.5} – {Grey Mountain, Whitehorse, Yukon} – {20/07/08 Sunday, July 20, 2008; 3:20:43 PM}