Native to:
Albania,
Algeria,
Altay,
Argentina Northeast,
Argentina Northwest,
Argentina South,
Austria,
Azores,
Baltic States,
Belarus,
Belgium,
Bolivia,
Brazil South,
Bulgaria,
Burundi,
Canary Is.,
Central European Rus,
Chile Central,
Chile North,
Chita,
Corse,
Czechoslovakia,
Denmark,
East Aegean Is.,
East European Russia,
Ethiopia,
Finland,
France,
Føroyar,
Germany,
Great Britain,
Greece,
Hungary,
Iceland,
India,
Iraq,
Ireland,
Irkutsk,
Italy,
Kazakhstan,
Kenya,
Krasnoyarsk,
Kriti,
Lebanon-Syria,
Libya,
Madeira,
Morocco,
Nepal,
Netherlands,
North Caucasus,
North European Russi,
Northwest European R,
Norway,
Palestine,
Paraguay,
Poland,
Portugal,
Romania,
Rwanda,
Sardegna,
Sicilia,
South European Russi,
Spain,
Sweden,
Switzerland,
Tanzania,
Transcaucasus,
Tunisia,
Turkey,
Turkey-in-Europe,
Ukraine,
Uruguay,
West Himalaya,
West Siberia,
Yakutskiya,
Yugoslavia,
Zaïre
Introduced into:
Alabama,
Alaska,
Alberta,
Amur,
Angola,
Arkansas,
Assam,
Bangladesh,
Brazil North,
Brazil Southeast,
British Columbia,
California,
Cape Provinces,
Chile South,
China North-Central,
China South-Central,
Colombia,
Colorado,
Connecticut,
Costa Rica,
Delaware,
District of Columbia,
East Himalaya,
Ecuador,
Falkland Is.,
Florida,
Georgia,
Greenland,
Guatemala,
Hawaii,
Idaho,
Illinois,
Indiana,
Jamaica,
Japan,
Kamchatka,
Kentucky,
Khabarovsk,
Kirgizstan,
Korea,
Kuril Is.,
KwaZulu-Natal,
Lesotho,
Louisiana,
Magadan,
Maine,
Manchuria,
Maryland,
Massachusetts,
Mexico Central,
Mexico Gulf,
Mexico Northeast,
Mexico Northwest,
Mexico Southwest,
Michigan,
Minnesota,
Mississippi,
Missouri,
Montana,
New Brunswick,
New Caledonia,
New Hampshire,
New Jersey,
New York,
New Zealand North,
Newfoundland,
North Carolina,
Northern Provinces,
Northwest Territorie,
Nova Scotia,
Ohio,
Ontario,
Oregon,
Panamá,
Pennsylvania,
Peru,
Philippines,
Primorye,
Prince Edward I.,
Québec,
Rhode I.,
Réunion,
Sakhalin,
Saskatchewan,
South Carolina,
Sri Lanka,
St.Helena,
Tasmania,
Texas,
Vermont,
Virginia,
Washington,
West Virginia,
Wisconsin,
Wyoming,
Yukon,
Zimbabwe