Nodding Arnica - Arnica parryi
Common and found mostly between 4500 and 6000 feet, on open, dry slopes and dryish meadows; abundant on Sourdough Ridge at Sunrise. Photographed (left) along Highway 410 on July 31, 2014, (center) on the Shadow Lake trail on July 25, 2014, and (right) along the Dege Peak trail on September 7, 2016.