Native to:
Albania,
Algeria,
Austria,
Azores,
Baleares,
Belgium,
Bulgaria,
Cameroon,
Canary Is.,
Corse,
Czechoslovakia,
Denmark,
Djibouti,
Egypt,
Eritrea,
Ethiopia,
France,
Germany,
Great Britain,
Greece,
Hungary,
Ireland,
Italy,
Kenya,
Lebanon-Syria,
Libya,
Madeira,
Mauritania,
Morocco,
Netherlands,
Poland,
Portugal,
Romania,
Sardegna,
Selvagens,
Sicilia,
Somalia,
Spain,
Sudan,
Sweden,
Switzerland,
Transcaucasus,
Tunisia,
Turkey,
Turkey-in-Europe,
Uganda,
Ukraine,
Yemen,
Yugoslavia
Introduced into:
Alabama,
Amsterdam-St.Paul Is,
Antipodean Is.,
Argentina Northeast,
Argentina Northwest,
Argentina South,
Arizona,
Arkansas,
Ascension,
Bahamas,
Bolivia,
Brazil South,
Brazil Southeast,
British Columbia,
California,
Cape Provinces,
Chatham Is.,
Chile Central,
Chile North,
Chile South,
Colombia,
Costa Rica,
Delaware,
East Himalaya,
Ecuador,
El Salvador,
Falkland Is.,
Florida,
Free State,
Georgia,
Guatemala,
Hawaii,
Honduras,
Idaho,
Illinois,
Jamaica,
Japan,
Jawa,
Juan Fernández Is.,
Kentucky,
Kerguelen,
Kermadec Is.,
KwaZulu-Natal,
Lesotho,
Lesser Sunda Is.,
Louisiana,
Maine,
Massachusetts,
Mauritius,
Mexico Central,
Mexico Gulf,
Mexico Northwest,
Mexico Southeast,
Missouri,
Montana,
Nevada,
New Guinea,
New Mexico,
New South Wales,
New York,
New Zealand North,
New Zealand South,
Norfolk Is.,
North Carolina,
Northern Provinces,
Northwest Territorie,
Ohio,
Oklahoma,
Oregon,
Peru,
Puerto Rico,
Queensland,
Réunion,
South Australia,
South Carolina,
Sri Lanka,
St.Helena,
Tasmania,
Tennessee,
Texas,
Tristan da Cunha,
Uruguay,
Utah,
Victoria,
Vietnam,
Virginia,
Washington,
Western Australia,
Windward Is.