Native to:
Albania,
Algeria,
Altay,
Austria,
Azores,
Baltic States,
Belarus,
Belgium,
Bulgaria,
Burundi,
Canary Is.,
Central European Russia,
Chita,
Corse,
Czechoslovakia,
Denmark,
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 Russia,
Northwest European Russia,
Norway,
Palestine,
Poland,
Portugal,
Romania,
Rwanda,
Sardegna,
Sicilia,
South European Russia,
Spain,
Sweden,
Switzerland,
Tanzania,
Transcaucasus,
Tunisia,
Turkey,
Turkey-in-Europe,
Ukraine,
West Himalaya,
West Siberia,
Yakutskiya,
Yugoslavia,
Zaïre
Introduced into:
Alabama,
Alaska,
Alberta,
Amur,
Angola,
Argentina Northeast,
Argentina South,
Arkansas,
Assam,
Bangladesh,
Bolivia,
Brazil North,
Brazil South,
Brazil Southeast,
British Columbia,
California,
Cape Provinces,
Chile Central,
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 Territories,
Nova Scotia,
Ohio,
Ontario,
Oregon,
Panamá,
Paraguay,
Pennsylvania,
Peru,
Philippines,
Primorye,
Prince Edward I.,
Québec,
Rhode I.,
Réunion,
Sakhalin,
Saskatchewan,
South Carolina,
Sri Lanka,
St.Helena,
Tasmania,
Texas,
Uruguay,
Vermont,
Virginia,
Washington,
West Virginia,
Wisconsin,
Wyoming,
Yukon,
Zimbabwe