Native to:
Albania,
Austria,
Belgium,
Bulgaria,
Corse,
Czechoslovakia,
Denmark,
East Aegean Is.,
Finland,
France,
Germany,
Great Britain,
Hungary,
Iran,
Italy,
Kriti,
Netherlands,
Norway,
Poland,
Portugal,
Romania,
Sardegna,
Sicilia,
South European Russi,
Spain,
Sweden,
Switzerland,
Turkey,
Turkey-in-Europe,
Yugoslavia
Introduced into:
Alabama,
Algeria,
Azores,
Baltic States,
Belarus,
California,
Central European Rus,
Chatham Is.,
Chile Central,
China North-Central,
China Southeast,
Egypt,
Hawaii,
Idaho,
Illinois,
India,
Japan,
Kentucky,
Korea,
Krym,
Madeira,
Maryland,
Minnesota,
Morocco,
New South Wales,
New York,
New Zealand North,
New Zealand South,
North Caucasus,
Northern Provinces,
Northwest European R,
Oregon,
Pakistan,
Queensland,
Sakhalin,
South Australia,
Tasmania,
Tennessee,
Transcaucasus,
Ukraine,
Vermont,
Victoria,
Washington,
Western Australia,
Wisconsin