Original identification: Arnica sororia
Current identification: Arnica sororia
Photographer: Ron Bockelman
Date Photographed: June 21, 2013
Location: U.S.A., Washington, Kittitas County: Wild Horse Wind Facility (Puget Sound Energy).
Elevation: 3430 ft.
Coordinates: 47.03883° N, 120.20619° W
Phenology: Flowers
Comments: Penknife is 6 cm long.