Native to:
Alaska,
Albania,
Alberta,
Aleutian Is.,
Altay,
Austria,
British Columbia,
Bulgaria,
Buryatiya,
California,
Central European Russia,
Colorado,
Corse,
Czechoslovakia,
East Himalaya,
Finland,
France,
Føroyar,
Germany,
Great Britain,
Greece,
Greenland,
Iceland,
Idaho,
Irkutsk,
Italy,
Japan,
Kamchatka,
Krasnoyarsk,
Kuril Is.,
Labrador,
Magadan,
Maine,
Mongolia,
Montana,
Nevada,
New Hampshire,
New Mexico,
Newfoundland,
North Caucasus,
North European Russia,
Northwest Territories,
Norway,
Nunavut,
Oregon,
Poland,
Portugal,
Québec,
Romania,
Spain,
Svalbard,
Sweden,
Switzerland,
Transcaucasus,
Turkey,
Tuva,
Ukraine,
Utah,
Washington,
West Himalaya,
West Siberia,
Wyoming,
Xinjiang,
Yakutskiya,
Yugoslavia,
Yukon