Native to:
Albania,
Altay,
Austria,
Baltic States,
Belarus,
Belgium,
Bulgaria,
Central European Russia,
Czechoslovakia,
Denmark,
East European Russia,
Finland,
France,
Føroyar,
Germany,
Great Britain,
Greece,
Hungary,
Iceland,
Ireland,
Italy,
Kazakhstan,
Krym,
Netherlands,
North Caucasus,
North European Russia,
Northwest European Russia,
Norway,
Poland,
Portugal,
Romania,
South European Russia,
Spain,
Sweden,
Switzerland,
Ukraine,
West Siberia,
Yugoslavia
Introduced into:
Alaska,
Alberta,
Arizona,
British Columbia,
Colorado,
Connecticut,
Greenland,
Idaho,
Kamchatka,
Khabarovsk,
Labrador,
Maine,
Manitoba,
Massachusetts,
Michigan,
Montana,
New Brunswick,
New Mexico,
New York,
Newfoundland,
Northwest Territories,
Nova Scotia,
Ontario,
Oregon,
Primorye,
Québec,
Sakhalin,
Saskatchewan,
Vermont,
Washington,
Wisconsin