Native to Alberta, British Columbia, Idaho, Washington (source: POWO). Flora of the World documents 1 occurrence across 1 country.
Location
United States, Idaho, Idaho
45.244, -115.588639
Location Remarks
1.9 km N of Warren Summit on FSR 340, at Mayflower Creek Bridge. Elev. 1904 m.
Collectors
Christopher Davidson, Sharon R. Christoph, Roy E. Gereau, Charlotte M. Taylor