Arnica gracilis Rydb. × Arnica longifolia D.C. Eaton

Idaho: Custer County: Along Wild Horse Creek at north foot of Mounain Hyndman. Elev. 8200 ft.
43.936494° N, 114.201194° W,
Datum: WGS 84. Uncertainty: 10000 meters. Coordinate Source: GeoLocate.
Commonly growing with both suspected parents in open areas. Leaves strongly fragrant. Pollen stainability 6%. Phenology: Flowers.

Gerald B. Straley 2401, Aug 8, 1982
With R. Patrick Harrison
WTU, Accession: 315141