Native to:
Alaska,
Albania,
Algeria,
Amsterdam-St.Paul Is,
Andaman Is.,
Angola,
Antipodean Is.,
Argentina Northeast,
Argentina Northwest,
Argentina South,
Ascension,
Assam,
Austria,
Azores,
Baltic States,
Bangladesh,
Belgium,
Belize,
Bismarck Archipelago,
Bolivia,
Borneo,
Brazil North,
Brazil Northeast,
Brazil South,
Brazil Southeast,
Brazil West-Central,
British Columbia,
Bulgaria,
Burundi,
California,
Cambodia,
Cameroon,
Canary Is.,
Cape Provinces,
Caroline Is.,
Central American Pac,
Chatham Is.,
Chile Central,
Chile South,
China South-Central,
China Southeast,
Colombia,
Comoros,
Cook Is.,
Corse,
Costa Rica,
Crozet Is.,
Cuba,
Czechoslovakia,
Denmark,
Dominican Republic,
East Himalaya,
Easter Is.,
Ecuador,
El Salvador,
Ethiopia,
Falkland Is.,
Fiji,
Finland,
Florida,
France,
Free State,
French Guiana,
Føroyar,
Gabon,
Galápagos,
Georgia,
Germany,
Great Britain,
Greece,
Guatemala,
Gulf of Guinea Is.,
Guyana,
Hainan,
Haiti,
Hawaii,
Honduras,
Hungary,
Iceland,
Idaho,
India,
Iran,
Ireland,
Italy,
Jamaica,
Japan,
Jawa,
Juan Fernández Is.,
Kenya,
Kerguelen,
Kermadec Is.,
Kriti,
Kuril Is.,
KwaZulu-Natal,
Laos,
Lebanon-Syria,
Leeward Is.,
Lesotho,
Lesser Sunda Is.,
Macquarie Is.,
Madagascar,
Madeira,
Malawi,
Malaya,
Maluku,
Marianas,
Marion-Prince Edward,
Marquesas,
Mauritius,
Mexico Central,
Mexico Gulf,
Mexico Northeast,
Mexico Northwest,
Mexico Southeast,
Mexico Southwest,
Morocco,
Mozambique,
Myanmar,
Namibia,
Nansei-shoto,
Nepal,
Netherlands,
New Caledonia,
New Guinea,
New South Wales,
New Zealand North,
New Zealand South,
Nicaragua,
Nicobar Is.,
Nigeria,
Norfolk Is.,
North Caucasus,
Northern Provinces,
Northern Territory,
Northwest European R,
Norway,
Ogasawara-shoto,
Oregon,
Panamá,
Paraguay,
Peru,
Philippines,
Pitcairn Is.,
Poland,
Portugal,
Puerto Rico,
Queensland,
Romania,
Rwanda,
Réunion,
Samoa,
Santa Cruz Is.,
Sardegna,
Sicilia,
Society Is.,
Solomon Is.,
South Australia,
South Georgia,
Spain,
Sri Lanka,
Sulawesi,
Sumatera,
Suriname,
Swaziland,
Sweden,
Switzerland,
Taiwan,
Tanzania,
Tasmania,
Texas,
Thailand,
Tibet,
Tonga,
Transcaucasus,
Trinidad-Tobago,
Tristan da Cunha,
Tubuai Is.,
Tunisia,
Turkey,
Turkey-in-Europe,
Uganda,
Ukraine,
Uruguay,
Vanuatu,
Venezuela,
Venezuelan Antilles,
Victoria,
Vietnam,
Wallis-Futuna Is.,
Washington,
West Himalaya,
Western Australia,
Windward Is.,
Yugoslavia,
Zambia,
Zaïre,
Zimbabwe
Introduced into:
Bermuda