Native to:
Afghanistan,
Alabama,
Alaska,
Albania,
Alberta,
Altay,
Amur,
Angola,
Argentina Northeast,
Argentina Northwest,
Argentina South,
Arizona,
Arkansas,
Assam,
Austria,
Bahamas,
Baltic States,
Belarus,
Belgium,
Belize,
Bermuda,
Bolivia,
Brazil North,
Brazil Northeast,
Brazil South,
Brazil Southeast,
Brazil West-Central,
British Columbia,
Bulgaria,
Burundi,
Buryatiya,
California,
Cameroon,
Canary Is.,
Cape Verde,
Cayman Is.,
Central European Rus,
Chad,
Chile Central,
Chile North,
Chile South,
China North-Central,
China South-Central,
China Southeast,
Chita,
Colombia,
Colorado,
Connecticut,
Corse,
Costa Rica,
Cuba,
Czechoslovakia,
Delaware,
District of Columbia,
Djibouti,
Dominican Republic,
East European Russia,
East Himalaya,
Ecuador,
El Salvador,
Eritrea,
Ethiopia,
Falkland Is.,
Finland,
Florida,
France,
French Guiana,
Galápagos,
Georgia,
Germany,
Great Britain,
Greece,
Greenland,
Guatemala,
Gulf of Guinea Is.,
Guyana,
Haiti,
Honduras,
Hungary,
Iceland,
Idaho,
Illinois,
India,
Indiana,
Inner Mongolia,
Iowa,
Iran,
Iraq,
Ireland,
Irkutsk,
Italy,
Jamaica,
Japan,
Juan Fernández Is.,
Kamchatka,
Kansas,
Kazakhstan,
Kentucky,
Kenya,
Khabarovsk,
Kirgizstan,
Korea,
Krasnoyarsk,
Kriti,
Krym,
Kuril Is.,
Labrador,
Lebanon-Syria,
Leeward Is.,
Louisiana,
Magadan,
Maine,
Malawi,
Manchuria,
Manitoba,
Maryland,
Massachusetts,
Mexican Pacific Is.,
Mexico Central,
Mexico Gulf,
Mexico Northeast,
Mexico Northwest,
Mexico Southeast,
Mexico Southwest,
Michigan,
Minnesota,
Mississippi,
Missouri,
Mongolia,
Montana,
Morocco,
Myanmar,
Nebraska,
Nepal,
Netherlands,
Nevada,
New Brunswick,
New Guinea,
New Hampshire,
New Jersey,
New Mexico,
New South Wales,
New York,
Newfoundland,
Nicaragua,
North Carolina,
North Caucasus,
North Dakota,
North European Russi,
Northwest European R,
Northwest Territorie,
Norway,
Nova Scotia,
Nunavut,
Ohio,
Oklahoma,
Ontario,
Oregon,
Pakistan,
Panamá,
Paraguay,
Pennsylvania,
Peru,
Poland,
Portugal,
Primorye,
Prince Edward I.,
Puerto Rico,
Qinghai,
Québec,
Rhode I.,
Romania,
Rwanda,
Sakhalin,
Saskatchewan,
Saudi Arabia,
Somalia,
South Carolina,
South Dakota,
South European Russi,
Spain,
Sri Lanka,
Sudan,
Suriname,
Sweden,
Switzerland,
Tadzhikistan,
Taiwan,
Tanzania,
Tennessee,
Texas,
Thailand,
Tibet,
Transcaucasus,
Trinidad-Tobago,
Turkey,
Turkmenistan,
Turks-Caicos Is.,
Tuva,
Uganda,
Ukraine,
Uruguay,
Utah,
Uzbekistan,
Venezuela,
Venezuelan Antilles,
Vermont,
Victoria,
Vietnam,
Virginia,
Washington,
West Himalaya,
West Siberia,
West Virginia,
Windward Is.,
Wisconsin,
Wyoming,
Xinjiang,
Yakutskiya,
Yemen,
Yugoslavia,
Yukon,
Zambia,
Zaïre
Introduced into:
Algeria,
Andaman Is.,
Azores,
Baleares,
Bangladesh,
Benin,
Botswana,
Cambodia,
Cape Provinces,
Caroline Is.,
Central African Repu,
Chagos Archipelago,
Chatham Is.,
Christmas I.,
Cocos (Keeling) Is.,
Comoros,
Congo,
Cook Is.,
Cyprus,
Denmark,
East Aegean Is.,
Egypt,
Fiji,
Free State,
Gabon,
Gilbert Is.,
Guinea,
Gulf States,
Hainan,
Hawaii,
Ivory Coast,
Jawa,
Kazan-retto,
KwaZulu-Natal,
Laos,
Lesotho,
Libya,
Line Is.,
Madagascar,
Madeira,
Malaya,
Marcus I.,
Marianas,
Marquesas,
Marshall Is.,
Mauritania,
Mauritius,
Mozambique,
Namibia,
New Caledonia,
New Zealand North,
New Zealand South,
Nicobar Is.,
Niue,
Norfolk Is.,
Northern Provinces,
Ogasawara-shoto,
Oman,
Palestine,
Philippines,
Pitcairn Is.,
Queensland,
Rodrigues,
Réunion,
Samoa,
Sardegna,
Sicilia,
Sinai,
Society Is.,
South Australia,
South China Sea,
Sumatera,
Swaziland,
Tasmania,
Tonga,
Tristan da Cunha,
Tubuai Is.,
Tunisia,
Turkey-in-Europe,
Wake I.,
Western Australia,
Zimbabwe