Native to:
Albania,
Austria,
Baltic States,
Belarus,
Belgium,
Bulgaria,
Central European Rus,
Corse,
Czechoslovakia,
France,
Germany,
Great Britain,
Greece,
Hungary,
Ireland,
Italy,
Netherlands,
Northwest European R,
Poland,
Portugal,
Romania,
Sicilia,
Spain,
Switzerland,
Yugoslavia
Introduced into:
Argentina South,
Azores,
British Columbia,
Canary Is.,
Chile Central,
Chile South,
Connecticut,
Denmark,
East European Russia,
Ecuador,
Finland,
Georgia,
Illinois,
Indiana,
Iowa,
Kamchatka,
Kentucky,
Krym,
Labrador,
Madeira,
Magadan,
Maine,
Manitoba,
Maryland,
Massachusetts,
Michigan,
Minnesota,
New Brunswick,
New Hampshire,
New Jersey,
New South Wales,
New York,
New Zealand North,
New Zealand South,
Newfoundland,
North Carolina,
North European Russi,
Norway,
Nova Scotia,
Ohio,
Ontario,
Pennsylvania,
Prince Edward I.,
Québec,
Rhode I.,
South European Russi,
Sweden,
Tasmania,
Ukraine,
Uzbekistan,
Vermont,
Victoria,
Washington,
West Virginia,
Wisconsin