balsam groundsel —  Senecio pauperculus {composite family — Asteraceae (Compositae)}
Flora of the Yukon Territory, Cody, p. 595c
 { 1/4 sec, f10.0} – {Salt Flats, Alaska Hwy, Yukon} – {21/08/08 Thursday, August 21, 2008; 8:40:18 PM}