Native to:
Albania,
Algeria,
Austria,
Azores,
Baltic States,
Belarus,
Belgium,
Bulgaria,
Cameroon,
Canary Is.,
Cape Verde,
Corse,
Czechoslovakia,
Denmark,
East Aegean Is.,
Ethiopia,
France,
Germany,
Great Britain,
Gulf of Guinea Is.,
Hungary,
Ireland,
Italy,
Kenya,
Krym,
Madagascar,
Madeira,
Malawi,
Morocco,
Netherlands,
Nigeria,
Poland,
Portugal,
Romania,
Rwanda,
Sardegna,
Sicilia,
Spain,
Sudan,
Sweden,
Switzerland,
Tanzania,
Tibet,
Transcaucasus,
Tunisia,
Turkey,
Turkey-in-Europe,
Uganda,
Ukraine,
West Himalaya,
Yugoslavia,
Zaïre
Introduced into:
Alabama,
Chatham Is.,
Costa Rica,
District of Columbia,
Falkland Is.,
Florida,
Hawaii,
Japan,
Korea,
Marquesas,
Maryland,
Mexico Northwest,
Mexico Southwest,
New South Wales,
New Zealand North,
New Zealand South,
Queensland,
South Australia,
Tasmania,
Tennessee,
Tristan da Cunha,
Victoria,
Western Australia