Native to:
Afghanistan,
Albania,
Algeria,
Andaman Is.,
Angola,
Azores,
Baleares,
Bangladesh,
Benin,
Botswana,
Bulgaria,
Burkina,
Burundi,
Cameroon,
Cape Provinces,
Cape Verde,
Caprivi Strip,
Central African Repu,
Chad,
China North-Central,
China South-Central,
China Southeast,
Corse,
Cyprus,
Djibouti,
East Aegean Is.,
East Himalaya,
Egypt,
Eritrea,
Ethiopia,
France,
Free State,
Ghana,
Greece,
Gulf States,
Hainan,
Hungary,
India,
Inner Mongolia,
Iran,
Iraq,
Italy,
Ivory Coast,
Japan,
Jawa,
Kazakhstan,
Kenya,
Kirgizstan,
Korea,
Kriti,
Krym,
KwaZulu-Natal,
Lebanon-Syria,
Lesotho,
Lesser Sunda Is.,
Libya,
Madagascar,
Malawi,
Mali,
Maluku,
Manchuria,
Mauritania,
Mauritius,
Mongolia,
Morocco,
Mozambique,
Myanmar,
Namibia,
Nansei-shoto,
New Guinea,
Nicobar Is.,
Niger,
Nigeria,
North Caucasus,
Northern Provinces,
Oman,
Pakistan,
Palestine,
Philippines,
Portugal,
Qinghai,
Rodrigues,
Romania,
Rwanda,
Réunion,
Sardegna,
Saudi Arabia,
Senegal,
Sicilia,
Sinai,
Socotra,
Somalia,
Spain,
Sri Lanka,
Sudan,
Sulawesi,
Swaziland,
Tadzhikistan,
Taiwan,
Tanzania,
Thailand,
Togo,
Transcaucasus,
Tunisia,
Turkey,
Turkey-in-Europe,
Turkmenistan,
Uganda,
Ukraine,
Uzbekistan,
Vietnam,
West Himalaya,
Xinjiang,
Yemen,
Yugoslavia,
Zambia,
Zaïre,
Zimbabwe
Introduced into:
Alabama,
Alberta,
Argentina Northeast,
Argentina Northwest,
Argentina South,
Arizona,
Arkansas,
Austria,
Belgium,
Bermuda,
Bolivia,
Brazil Northeast,
Brazil South,
Brazil Southeast,
British Columbia,
California,
Chatham Is.,
Colombia,
Colorado,
Connecticut,
Costa Rica,
Cuba,
Czechoslovakia,
Delaware,
Denmark,
District of Columbia,
Dominican Republic,
Ecuador,
El Salvador,
Florida,
Galápagos,
Georgia,
Germany,
Great Britain,
Guatemala,
Haiti,
Hawaii,
Honduras,
Idaho,
Illinois,
Indiana,
Iowa,
Kansas,
Kentucky,
Louisiana,
Madeira,
Maine,
Manitoba,
Maryland,
Massachusetts,
Mexico Central,
Mexico Gulf,
Mexico Northeast,
Mexico Northwest,
Mexico Southeast,
Mexico Southwest,
Michigan,
Minnesota,
Mississippi,
Missouri,
Montana,
Nebraska,
Netherlands,
Nevada,
New Caledonia,
New Hampshire,
New Jersey,
New Mexico,
New South Wales,
New York,
New Zealand North,
Nicaragua,
Norfolk Is.,
North Carolina,
North Dakota,
Northern Territory,
Nova Scotia,
Ohio,
Oklahoma,
Ontario,
Oregon,
Paraguay,
Pennsylvania,
Peru,
Poland,
Primorye,
Queensland,
Québec,
Rhode I.,
Saskatchewan,
South Australia,
South Carolina,
South Dakota,
St.Helena,
Switzerland,
Tasmania,
Tennessee,
Texas,
Uruguay,
Utah,
Venezuela,
Vermont,
Victoria,
Virginia,
Washington,
West Virginia,
Western Australia,
Wisconsin,
Wyoming