Native to:
Argentina Northeast,
Argentina Northwest,
Argentina South,
Arizona,
Bolivia,
Brazil Northeast,
Brazil South,
Brazil Southeast,
British Columbia,
California,
Chile Central,
Chile North,
Chile South,
Colorado,
Cuba,
Ecuador,
Galápagos,
Guatemala,
Idaho,
Juan Fernández Is.,
Marquesas,
Mexican Pacific Is.,
Mexico Central,
Mexico Gulf,
Mexico Northeast,
Mexico Northwest,
Mexico Southeast,
Mexico Southwest,
Montana,
Namibia,
Nevada,
New Caledonia,
New Mexico,
New South Wales,
Niue,
Norfolk Is.,
Northern Territory,
Oklahoma,
Oregon,
Paraguay,
Peru,
Queensland,
South Australia,
Texas,
Tonga,
Uruguay,
Utah,
Victoria,
Washington,
Western Australia,
Wyoming
Introduced into:
Alabama,
Albania,
Aldabra,
Algeria,
Andaman Is.,
Angola,
Aruba,
Ascension,
Assam,
Austria,
Azores,
Bahamas,
Baleares,
Bangladesh,
Belgium,
Belize,
Benin,
Bermuda,
Bismarck Archipelago,
Borneo,
Botswana,
Brazil North,
Brazil West-Central,
Bulgaria,
Burkina,
Burundi,
Cambodia,
Cameroon,
Canary Is.,
Cape Provinces,
Cape Verde,
Caroline Is.,
Cayman Is.,
Central African Republic,
Central American Pacific Is.,
Central European Russia,
Chad,
China North-Central,
China South-Central,
China Southeast,
Christmas I.,
Colombia,
Comoros,
Congo,
Cook Is.,
Corse,
Costa Rica,
Cyprus,
Czechoslovakia,
Denmark,
Dominican Republic,
East Aegean Is.,
East European Russia,
East Himalaya,
Easter Is.,
Egypt,
Equatorial Guinea,
Eritrea,
Ethiopia,
Fiji,
France,
Free State,
Gabon,
Gambia,
Germany,
Ghana,
Gilbert Is.,
Great Britain,
Greece,
Guinea,
Guinea-Bissau,
Gulf of Guinea Is.,
Haiti,
Hawaii,
Honduras,
Hungary,
Illinois,
India,
Ireland,
Italy,
Ivory Coast,
Jamaica,
Jawa,
Kazakhstan,
Kazan-retto,
Kentucky,
Kenya,
Korea,
Kriti,
Krym,
KwaZulu-Natal,
Laos,
Lebanon-Syria,
Leeward Is.,
Lesotho,
Libya,
Line Is.,
Madagascar,
Madeira,
Malawi,
Maldives,
Mali,
Marcus I.,
Marianas,
Marshall Is.,
Maryland,
Mauritania,
Mauritius,
Morocco,
Mozambique,
Myanmar,
Nepal,
Netherlands,
Netherlands Antilles,
New Guinea,
New York,
New Zealand North,
Nicobar Is.,
Niger,
Nigeria,
North European Russia,
Northern Provinces,
Ogasawara-shoto,
Oman,
Pakistan,
Palestine,
Philippines,
Pitcairn Is.,
Portugal,
Primorye,
Puerto Rico,
Qinghai,
Rodrigues,
Romania,
Rwanda,
Réunion,
Samoa,
Sardegna,
Saudi Arabia,
Selvagens,
Senegal,
Seychelles,
Sicilia,
Sierra Leone,
Sinai,
Society Is.,
Socotra,
Solomon Is.,
Somalia,
South European Russia,
Southwest Caribbean,
Spain,
St.Helena,
Sudan,
Sweden,
Switzerland,
Tadzhikistan,
Taiwan,
Tanzania,
Tasmania,
Thailand,
Togo,
Trinidad-Tobago,
Tunisia,
Turkey,
Turkey-in-Europe,
Turkmenistan,
Uganda,
Ukraine,
Uzbekistan,
Vanuatu,
Venezuela,
Vietnam,
Wake I.,
West Himalaya,
Windward Is.,
Xinjiang,
Yemen,
Yugoslavia,
Zambia,
Zaïre,
Zimbabwe