Native to:
Albania,
Algeria,
Austria,
Azores,
Baltic States,
Belarus,
Belgium,
Bulgaria,
Canary Is.,
Central European Rus,
Corse,
Czechoslovakia,
Denmark,
East European Russia,
Finland,
France,
Germany,
Greece,
Hungary,
Italy,
Kriti,
Libya,
Madeira,
Morocco,
Netherlands,
Northwest European R,
Norway,
Palestine,
Poland,
Portugal,
Romania,
Sardegna,
Sicilia,
South European Russi,
Spain,
Sweden,
Switzerland,
Tunisia,
Ukraine,
Yugoslavia
Introduced into:
Alabama,
Assam,
Bangladesh,
Bermuda,
District of Columbia,
Falkland Is.,
Florida,
Great Britain,
Haiti,
Illinois,
Ireland,
Kentucky,
Louisiana,
Maryland,
Massachusetts,
Mauritius,
New York,
Newfoundland,
Northern Provinces,
Nova Scotia,
Pennsylvania,
Québec,
Réunion,
St.Helena,
Texas,
Tristan da Cunha,
Turkmenistan,
Vermont