Native to:
Albania,
Algeria,
Altay,
Austria,
Baleares,
Baltic States,
Belarus,
Belgium,
Bulgaria,
Central European Rus,
Corse,
Czechoslovakia,
Denmark,
East Aegean Is.,
East European Russia,
Finland,
France,
Føroyar,
Germany,
Great Britain,
Greece,
Hungary,
Iceland,
Ireland,
Irkutsk,
Italy,
Kazakhstan,
Krasnoyarsk,
Krym,
Madeira,
Morocco,
Netherlands,
North Caucasus,
North European Russi,
Northwest European R,
Norway,
Pakistan,
Poland,
Portugal,
Romania,
Sardegna,
Sicilia,
South European Russi,
Spain,
Sweden,
Switzerland,
Transcaucasus,
Tunisia,
Turkey,
Turkey-in-Europe,
Ukraine,
West Himalaya,
West Siberia,
Yakutskiya,
Yugoslavia
Introduced into:
Alberta,
Argentina Northeast,
Argentina Northwest,
Argentina South,
Azores,
British Columbia,
Cape Provinces,
Colorado,
Connecticut,
District of Columbia,
Dominican Republic,
Falkland Is.,
Greenland,
Haiti,
Idaho,
Indiana,
Kamchatka,
Magadan,
Maine,
Manitoba,
Maryland,
Massachusetts,
Michigan,
Minnesota,
Montana,
New Brunswick,
New Hampshire,
New Jersey,
New York,
Newfoundland,
North Carolina,
Nova Scotia,
Ohio,
Ontario,
Oregon,
Pennsylvania,
Prince Edward I.,
Québec,
Rhode I.,
Saskatchewan,
South Carolina,
Taiwan,
Vermont,
Virginia,
Washington,
West Virginia,
Wisconsin,
Wyoming