Native to:
Afghanistan,
Albania,
Algeria,
Altay,
Austria,
Baleares,
Bulgaria,
Canary Is.,
Central European Russia,
Chita,
Corse,
Cyprus,
Czechoslovakia,
East Aegean Is.,
East European Russia,
Eritrea,
Ethiopia,
France,
Great Britain,
Greece,
Hungary,
Iran,
Iraq,
Irkutsk,
Italy,
Kazakhstan,
Kriti,
Krym,
Kuwait,
Lebanon-Syria,
Libya,
Mongolia,
Morocco,
North Caucasus,
Oman,
Pakistan,
Palestine,
Poland,
Portugal,
Romania,
Sardegna,
Saudi Arabia,
Sicilia,
Sinai,
Somalia,
South European Russia,
Spain,
Tadzhikistan,
Taiwan,
Transcaucasus,
Tunisia,
Turkey,
Turkmenistan,
Tuva,
Ukraine,
Uzbekistan,
West Siberia,
Xinjiang,
Yugoslavia
Introduced into:
Alabama,
Alaska,
Alberta,
Aleutian Is.,
Amsterdam-St.Paul Is.,
Amur,
Andaman Is.,
Angola,
Antipodean Is.,
Argentina Northeast,
Argentina Northwest,
Argentina South,
Arizona,
Arkansas,
Assam,
Azores,
Bahamas,
Baltic States,
Bangladesh,
Belarus,
Belgium,
Belize,
Bermuda,
Bolivia,
Borneo,
Botswana,
Brazil Northeast,
Brazil South,
Brazil Southeast,
Brazil West-Central,
British Columbia,
Buryatiya,
California,
Cambodia,
Cape Provinces,
Caroline Is.,
Cayman Is.,
Central African Republic,
Central American Pacific Is.,
Chatham Is.,
Chile Central,
Chile North,
Chile South,
China North-Central,
China South-Central,
China Southeast,
Colombia,
Colorado,
Comoros,
Congo,
Connecticut,
Cook Is.,
Costa Rica,
Crozet Is.,
Cuba,
Delaware,
Denmark,
District of Columbia,
Djibouti,
Dominican Republic,
East Himalaya,
Easter Is.,
Ecuador,
Egypt,
El Salvador,
Falkland Is.,
Finland,
Florida,
Free State,
French Guiana,
Føroyar,
Gabon,
Galápagos,
Georgia,
Germany,
Gilbert Is.,
Guatemala,
Guinea,
Gulf of Guinea Is.,
Haiti,
Hawaii,
Honduras,
Idaho,
Illinois,
India,
Indiana,
Inner Mongolia,
Iowa,
Ireland,
Ivory Coast,
Jamaica,
Japan,
Jawa,
Juan Fernández Is.,
Kamchatka,
Kansas,
Kentucky,
Kenya,
Kerguelen,
Khabarovsk,
Kirgizstan,
Korea,
Krasnoyarsk,
Kuril Is.,
KwaZulu-Natal,
Labrador,
Leeward Is.,
Line Is.,
Louisiana,
Madeira,
Magadan,
Maine,
Malawi,
Malaya,
Mali,
Maluku,
Manitoba,
Marianas,
Marshall Is.,
Maryland,
Massachusetts,
Mauritania,
Mauritius,
Mexico Central,
Mexico Northeast,
Mexico Northwest,
Mexico Southwest,
Michigan,
Minnesota,
Mississippi,
Missouri,
Montana,
Mozambique,
Nebraska,
Nepal,
Netherlands,
Nevada,
New Brunswick,
New Caledonia,
New Guinea,
New Hampshire,
New Jersey,
New Mexico,
New South Wales,
New York,
New Zealand North,
New Zealand South,
Newfoundland,
Nicaragua,
Nicobar Is.,
Niue,
Norfolk Is.,
North Carolina,
North Dakota,
North European Russia,
Northern Provinces,
Northern Territory,
Northwest European Russia,
Northwest Territories,
Norway,
Nova Scotia,
Ohio,
Oklahoma,
Ontario,
Oregon,
Panamá,
Paraguay,
Pennsylvania,
Peru,
Philippines,
Primorye,
Prince Edward I.,
Puerto Rico,
Queensland,
Québec,
Rhode I.,
Rodrigues,
Rwanda,
Réunion,
Sakhalin,
Saskatchewan,
Sierra Leone,
Society Is.,
Solomon Is.,
South Australia,
South Carolina,
South China Sea,
South Dakota,
Sri Lanka,
Sulawesi,
Sweden,
Switzerland,
Tanzania,
Tasmania,
Tennessee,
Texas,
Trinidad-Tobago,
Tristan da Cunha,
Tuamotu,
Uganda,
Uruguay,
Utah,
Vanuatu,
Venezuela,
Vermont,
Victoria,
Vietnam,
Virginia,
Washington,
West Himalaya,
West Virginia,
Western Australia,
Windward Is.,
Wisconsin,
Wyoming,
Yakutskiya,
Yemen,
Yukon,
Zaïre,
Zimbabwe