Native to:
Afghanistan,
Alabama,
Alaska,
Albania,
Alberta,
Aleutian Is.,
Algeria,
Altay,
Amur,
Angola,
Argentina Northeast,
Argentina Northwest,
Argentina South,
Arizona,
Arkansas,
Assam,
Austria,
Azores,
Baleares,
Baltic States,
Bangladesh,
Belarus,
Belgium,
Bolivia,
Brazil South,
Brazil Southeast,
British Columbia,
Bulgaria,
Burundi,
Buryatiya,
California,
Cameroon,
Canary Is.,
Cape Provinces,
Cape Verde,
Central European Rus,
Chad,
Chatham Is.,
Chile Central,
Chile North,
Chile South,
China North-Central,
China South-Central,
China Southeast,
Chita,
Colombia,
Colorado,
Congo,
Connecticut,
Corse,
Costa Rica,
Cyprus,
Czechoslovakia,
Delaware,
Denmark,
District of Columbia,
Djibouti,
East Aegean Is.,
East European Russia,
East Himalaya,
Ecuador,
Egypt,
Eritrea,
Ethiopia,
Falkland Is.,
Finland,
Florida,
France,
Free State,
Føroyar,
Georgia,
Germany,
Great Britain,
Greece,
Greenland,
Guatemala,
Gulf of Guinea Is.,
Hawaii,
Honduras,
Hungary,
Iceland,
Idaho,
Illinois,
India,
Indiana,
Inner Mongolia,
Iowa,
Iran,
Iraq,
Ireland,
Irkutsk,
Italy,
Japan,
Jawa,
Juan Fernández Is.,
Kamchatka,
Kansas,
Kazakhstan,
Kentucky,
Kenya,
Kerguelen,
Khabarovsk,
Kirgizstan,
Korea,
Krasnoyarsk,
Kriti,
Krym,
Kuril Is.,
KwaZulu-Natal,
Labrador,
Lebanon-Syria,
Lesotho,
Lesser Sunda Is.,
Libya,
Louisiana,
Macquarie Is.,
Madagascar,
Madeira,
Magadan,
Maine,
Malawi,
Malaya,
Maluku,
Manchuria,
Manitoba,
Maryland,
Massachusetts,
Mauritania,
Mexican Pacific Is.,
Mexico Central,
Mexico Gulf,
Mexico Northeast,
Mexico Northwest,
Mexico Southeast,
Mexico Southwest,
Michigan,
Minnesota,
Mississippi,
Missouri,
Mongolia,
Montana,
Morocco,
Mozambique,
Myanmar,
Nebraska,
Nepal,
Netherlands,
Nevada,
New Brunswick,
New Guinea,
New Hampshire,
New Jersey,
New Mexico,
New South Wales,
New York,
New Zealand North,
New Zealand South,
Newfoundland,
North Carolina,
North Caucasus,
North Dakota,
North European Russi,
Northern Provinces,
Northwest European R,
Northwest Territorie,
Norway,
Nova Scotia,
Nunavut,
Ohio,
Oklahoma,
Ontario,
Oregon,
Pakistan,
Palestine,
Panamá,
Paraguay,
Pennsylvania,
Peru,
Philippines,
Poland,
Portugal,
Primorye,
Prince Edward I.,
Qinghai,
Québec,
Rhode I.,
Romania,
Rwanda,
Réunion,
Sakhalin,
Sardegna,
Saskatchewan,
Saudi Arabia,
Selvagens,
Sicilia,
Sinai,
Somalia,
South Australia,
South Carolina,
South Dakota,
South European Russi,
South Georgia,
Spain,
Sri Lanka,
Sudan,
Sulawesi,
Sumatera,
Svalbard,
Swaziland,
Sweden,
Switzerland,
Tadzhikistan,
Taiwan,
Tanzania,
Tasmania,
Tennessee,
Texas,
Tibet,
Transcaucasus,
Tunisia,
Turkey,
Turkey-in-Europe,
Turkmenistan,
Tuva,
Uganda,
Ukraine,
Uruguay,
Utah,
Uzbekistan,
Venezuela,
Vermont,
Victoria,
Virginia,
Washington,
West Himalaya,
West Siberia,
West Virginia,
Wisconsin,
Wyoming,
Xinjiang,
Yakutskiya,
Yemen,
Yugoslavia,
Yukon,
Zambia,
Zaïre,
Zimbabwe
Introduced into:
Amsterdam-St.Paul Is,
Antipodean Is.,
Ascension,
Bahamas,
Crozet Is.,
Desventurados Is.,
Dominican Republic,
Easter Is.,
El Salvador,
Haiti,
Jamaica,
Kermadec Is.,
Leeward Is.,
Marion-Prince Edward,
Mauritius,
Nansei-shoto,
Norfolk Is.,
Northern Territory,
Puerto Rico,
Queensland,
St.Helena,
Tristan da Cunha,
Tubuai Is.,
Vietnam,
Western Australia,
Windward Is.