Native to:
Afghanistan,
Alabama,
Alaska,
Albania,
Alberta,
Aleutian Is.,
Algeria,
Altay,
Amur,
Argentina Northeast,
Argentina Northwest,
Argentina South,
Arizona,
Arkansas,
Austria,
Azores,
Baleares,
Baltic States,
Belarus,
Belgium,
Bermuda,
Bolivia,
Brazil South,
British Columbia,
Bulgaria,
Buryatiya,
California,
Canary Is.,
Cape Provinces,
Central European Rus,
Chile Central,
Chile North,
Chile South,
China North-Central,
China South-Central,
Chita,
Colorado,
Connecticut,
Corse,
Cyprus,
Czechoslovakia,
Delaware,
Denmark,
District of Columbia,
East Aegean Is.,
East European Russia,
Egypt,
Florida,
France,
Free State,
Georgia,
Germany,
Great Britain,
Greece,
Guatemala,
Gulf States,
Hungary,
Idaho,
Illinois,
Indiana,
Inner Mongolia,
Iowa,
Iran,
Iraq,
Ireland,
Irkutsk,
Italy,
Juan Fernández Is.,
Kamchatka,
Kansas,
Kazakhstan,
Kentucky,
Khabarovsk,
Kirgizstan,
Korea,
Krasnoyarsk,
Kriti,
Krym,
Kuril Is.,
Kuwait,
Labrador,
Lebanon-Syria,
Lesotho,
Libya,
Louisiana,
Madeira,
Magadan,
Maine,
Manchuria,
Manitoba,
Maryland,
Massachusetts,
Mauritania,
Mexico Central,
Mexico Northeast,
Mexico Northwest,
Michigan,
Minnesota,
Mississippi,
Missouri,
Mongolia,
Montana,
Morocco,
Nebraska,
Nepal,
Netherlands,
Nevada,
New Brunswick,
New Hampshire,
New Jersey,
New Mexico,
New York,
Newfoundland,
North Carolina,
North Caucasus,
North Dakota,
North European Russi,
Northern Provinces,
Northwest Territorie,
Nova Scotia,
Nunavut,
Ohio,
Oklahoma,
Ontario,
Oregon,
Pakistan,
Palestine,
Pennsylvania,
Peru,
Poland,
Portugal,
Primorye,
Prince Edward I.,
Qinghai,
Québec,
Rhode I.,
Romania,
Sakhalin,
Sardegna,
Saskatchewan,
Saudi Arabia,
Selvagens,
Sicilia,
Sinai,
South Carolina,
South Dakota,
South European Russi,
Spain,
Sweden,
Switzerland,
Tadzhikistan,
Tennessee,
Texas,
Tibet,
Transcaucasus,
Tunisia,
Turkey,
Turkey-in-Europe,
Turkmenistan,
Tuva,
Ukraine,
Uruguay,
Utah,
Uzbekistan,
Vermont,
Virginia,
Washington,
West Himalaya,
West Siberia,
West Virginia,
Wisconsin,
Wyoming,
Xinjiang,
Yakutskiya,
Yemen,
Yugoslavia,
Yukon
Introduced into:
Bangladesh,
Chad,
Chatham Is.,
China Southeast,
Colombia,
Cuba,
Dominican Republic,
East Himalaya,
Easter Is.,
Ecuador,
El Salvador,
Ethiopia,
Falkland Is.,
Fiji,
Finland,
Greenland,
Gulf of Guinea Is.,
Haiti,
Hawaii,
Honduras,
Iceland,
India,
Japan,
Jawa,
Kerguelen,
Kermadec Is.,
KwaZulu-Natal,
Mexican Pacific Is.,
Mexico Gulf,
Mexico Southeast,
Mexico Southwest,
Myanmar,
Nansei-shoto,
New Caledonia,
New South Wales,
New Zealand North,
New Zealand South,
Niger,
Nigeria,
Norfolk Is.,
Northern Territory,
Northwest European R,
Norway,
Oman,
Queensland,
Rwanda,
South Australia,
Sri Lanka,
Taiwan,
Tanzania,
Tasmania,
Victoria,
Vietnam,
Western Australia,
Western Sahara,
Windward Is.