Alaska birch —  Betula neoalaskana {birch family — Betulaceae}
Flora of the Yukon Territory, Cody, p. 238c
 { 1/20 sec, f3.5} – {Paddys Pond/Ice Lake, Whitehorse, Yukon} – {04/07/06 Tuesday, July 4, 2006; 3:00:35 PM}