Native to:
Algeria,
Austria,
Baleares,
Belgium,
Corse,
Denmark,
France,
Germany,
Great Britain,
Ireland,
Italy,
Netherlands,
Portugal,
Sardegna,
Spain,
Sweden,
Switzerland,
Tunisia
Introduced into:
Alabama,
Alaska,
Aleutian Is.,
Amsterdam-St.Paul Is.,
Argentina Northeast,
Argentina Northwest,
Argentina South,
Arizona,
Arkansas,
Azores,
Bermuda,
Bolivia,
Brazil Northeast,
Brazil South,
Brazil Southeast,
Brazil West-Central,
British Columbia,
California,
Canary Is.,
Cape Provinces,
Cape Verde,
Chile Central,
Chile South,
China North-Central,
China South-Central,
China Southeast,
Colombia,
Colorado,
Connecticut,
Costa Rica,
Cuba,
Delaware,
District of Columbia,
Dominican Republic,
Ecuador,
El Salvador,
Falkland Is.,
Finland,
Florida,
Føroyar,
Georgia,
Greece,
Guatemala,
Haiti,
Hawaii,
Hungary,
Idaho,
Illinois,
Indiana,
Iowa,
Jamaica,
Japan,
Jawa,
Kansas,
Kentucky,
Korea,
Louisiana,
Madeira,
Magadan,
Maine,
Maryland,
Massachusetts,
Mexico Central,
Mexico Gulf,
Mexico Northwest,
Mexico Southwest,
Michigan,
Minnesota,
Mississippi,
Missouri,
Montana,
Morocco,
Nebraska,
New Brunswick,
New Hampshire,
New Jersey,
New Mexico,
New York,
New Zealand North,
Newfoundland,
North Carolina,
Norway,
Nova Scotia,
Ohio,
Oklahoma,
Ontario,
Oregon,
Panamá,
Pennsylvania,
Peru,
Poland,
Prince Edward I.,
Québec,
Rhode I.,
Sicilia,
South Carolina,
Sri Lanka,
Taiwan,
Tasmania,
Tennessee,
Texas,
Tristan da Cunha,
Ukraine,
Utah,
Venezuela,
Virginia,
Washington,
West Siberia,
West Virginia,
Wisconsin,
Yugoslavia