Native to Idaho, Montana, Wyoming (source: POWO). Flora of the World documents 1 occurrence across 1 country.
Location
United States, Idaho, Valley
44.158, -116.118361
Location Remarks
Highway 55 c. 10 km north of the bridge at Banks. Mixed conifer forest along the N. Fork Payette River.
Collectors
Christopher Davidson, Sharon R. Christoph
Notes
Rocky, gravelly roadside slope.