Native to:
Alaska,
Albania,
Alberta,
Algeria,
Altay,
Arizona,
Austria,
Azores,
Baltic States,
Belarus,
Belgium,
British Columbia,
Bulgaria,
California,
Central European Rus,
Colorado,
Connecticut,
Corse,
Czechoslovakia,
Denmark,
East European Russia,
Finland,
France,
Føroyar,
Germany,
Great Britain,
Greece,
Hungary,
Idaho,
Ireland,
Italy,
Kazakhstan,
Madeira,
Maine,
Manitoba,
Massachusetts,
Michigan,
Minnesota,
Montana,
Morocco,
Netherlands,
Nevada,
New Brunswick,
New Hampshire,
New Mexico,
New York,
Newfoundland,
North Dakota,
North European Russi,
Northwest European R,
Northwest Territorie,
Norway,
Nova Scotia,
Ontario,
Oregon,
Pennsylvania,
Poland,
Portugal,
Prince Edward I.,
Québec,
Romania,
Sardegna,
Saskatchewan,
Sicilia,
South European Russi,
Spain,
Sweden,
Switzerland,
Transcaucasus,
Turkey,
Ukraine,
Utah,
Vermont,
Washington,
West Siberia,
Wisconsin,
Wyoming,
Yugoslavia
Introduced into:
New South Wales,
South Australia,
Tasmania,
Victoria