common tansy —  Tanacetum vulgare {composite family — Asteraceae (Compositae)}
Flora of the Yukon Territory, Cody, p. 601-
 { 1/200 sec, f7.1} – {airport belowclay cliff, Whitehorse, Yukon} – {01/07/07 Sunday, July 1, 2007; 2:23:10 PM}