black-tipped groundsel —  Senecio lugens {composite family — Asteraceae (Compositae)}
Flora of the Yukon Territory, Cody, p. 594c
 { 1/30 sec, f16.0} – {McIntyre Ck. college, Whitehorse, Yukon} – {09/07/10 Friday, July 9, 2010; 3:45:13 PM}