Native to:
Alaska,
Albania,
Alberta,
Arizona,
Austria,
Baltic States,
Belarus,
British Columbia,
Bulgaria,
California,
Central European Rus,
Colorado,
Connecticut,
Czechoslovakia,
East European Russia,
Finland,
France,
Germany,
Greece,
Hungary,
Idaho,
Illinois,
Indiana,
Iowa,
Italy,
Labrador,
Maine,
Manitoba,
Maryland,
Massachusetts,
Michigan,
Minnesota,
Montana,
Netherlands,
Nevada,
New Brunswick,
New Hampshire,
New Jersey,
New Mexico,
New York,
Newfoundland,
North Caucasus,
North Dakota,
North European Russi,
Northwest European R,
Northwest Territorie,
Norway,
Nova Scotia,
Nunavut,
Ohio,
Ontario,
Oregon,
Pennsylvania,
Poland,
Prince Edward I.,
Québec,
Rhode I.,
Romania,
Saskatchewan,
South European Russi,
Sweden,
Switzerland,
Transcaucasus,
Turkey,
Ukraine,
Utah,
Vermont,
Virginia,
Washington,
West Siberia,
West Virginia,
Wisconsin,
Wyoming,
Yugoslavia,
Yukon
Introduced into:
Argentina South,
Azores,
Belgium,
Denmark,
Føroyar,
Great Britain,
Ireland,
Spain