Native to Arizona, British Columbia, California, Colorado, Idaho, Montana, Nevada, Oregon, Québec, Utah, Washington, Wyoming; extinct in Newfoundland (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