Native to:
Albania,
Algeria,
Austria,
Baleares,
Baltic States,
Belarus,
Belgium,
Bulgaria,
Central European Rus,
Corse,
Cyprus,
Czechoslovakia,
Denmark,
East Aegean Is.,
East European Russia,
Finland,
France,
Germany,
Great Britain,
Greece,
Hungary,
Iran,
Iraq,
Ireland,
Italy,
Kazakhstan,
Krym,
Lebanon-Syria,
Morocco,
Netherlands,
North Caucasus,
Northwest European R,
Norway,
Palestine,
Poland,
Portugal,
Romania,
Sardegna,
Sicilia,
South European Russi,
Spain,
Sweden,
Switzerland,
Transcaucasus,
Turkey,
Turkey-in-Europe,
Turkmenistan,
Ukraine,
Uzbekistan,
Yugoslavia
Introduced into:
Assam,
Bangladesh,
British Columbia,
Cambodia,
China Southeast,
East Himalaya,
Maryland,
Massachusetts,
Nepal,
New York,
Pennsylvania,
Taiwan,
Vanuatu,
Vietnam,
Virginia,
West Himalaya