field horsetail —  Equisetum arvense {horsetail family — Equisetaceae}
Flora of the Yukon Territory, Cody, p. 028a
in front of arrow-leaf coltsfoot { 1/45 sec, f8.0} – {Paddys Pond/Ice Lake, Whitehorse, Yukon} – {07/07/03 Monday, July 7, 2003; 2:49:22 PM}