field horsetail —  Equisetum arvense {horsetail family — Equisetaceae}
Flora of the Yukon Territory, Cody, p. 028a
 { 1/60 sec, f8.0} – {Paddys Pond/Ice Lake, Whitehorse, Yukon} – {14/08/07 Tuesday, August 14, 2007; 2:40:44 PM}