Native to:
Alaska,
Albania,
Alberta,
Austria,
Baltic States,
British Columbia,
Bulgaria,
Buryatiya,
Central European Rus,
Colorado,
Czechoslovakia,
Denmark,
East European Russia,
Finland,
France,
Føroyar,
Germany,
Great Britain,
Greenland,
Iceland,
Idaho,
Ireland,
Irkutsk,
Italy,
Japan,
Kamchatka,
Krasnoyarsk,
Kuril Is.,
Labrador,
Maine,
Manitoba,
Michigan,
Minnesota,
Montana,
Nevada,
New Brunswick,
Newfoundland,
North Caucasus,
North European Russi,
Northwest European R,
Northwest Territorie,
Norway,
Nova Scotia,
Ontario,
Poland,
Prince Edward I.,
Québec,
Romania,
Saskatchewan,
Spain,
Sweden,
Switzerland,
Transcaucasus,
Tuva,
Ukraine,
West Siberia,
Wisconsin,
Wyoming,
Yakutskiya,
Yugoslavia,
Yukon