Native to:
Albania,
Austria,
Baltic States,
Belarus,
Belgium,
Bulgaria,
Central European Rus,
Czechoslovakia,
Denmark,
East European Russia,
Finland,
France,
Germany,
Great Britain,
Greece,
Hungary,
Iceland,
Iran,
Ireland,
Italy,
Krym,
Netherlands,
North Caucasus,
North European Russi,
Northwest European R,
Norway,
Poland,
Portugal,
Romania,
Spain,
Sweden,
Switzerland,
Transcaucasus,
Turkey,
Turkey-in-Europe,
Turkmenistan,
Ukraine,
Yugoslavia
Introduced into:
Alaska,
Alberta,
Argentina South,
British Columbia,
California,
Colorado,
Connecticut,
Delaware,
District of Columbia,
Falkland Is.,
Idaho,
Illinois,
Indiana,
Iowa,
Maine,
Maryland,
Massachusetts,
Michigan,
Minnesota,
Montana,
Nebraska,
New Brunswick,
New Hampshire,
New Jersey,
New York,
New Zealand North,
New Zealand South,
Newfoundland,
North Dakota,
Nova Scotia,
Ohio,
Ontario,
Oregon,
Pennsylvania,
Prince Edward I.,
Québec,
Rhode I.,
Saskatchewan,
South Carolina,
South Dakota,
Tasmania,
Utah,
Vermont,
Washington,
West Virginia,
Wisconsin,
Wyoming