Native to:
Afghanistan,
Alabama,
Alaska,
Albania,
Alberta,
Algeria,
Altay,
Amur,
Arizona,
Arkansas,
Assam,
Austria,
Bahamas,
Baleares,
Baltic States,
Bangladesh,
Belarus,
Belgium,
Belize,
British Columbia,
Bulgaria,
Buryatiya,
California,
Cambodia,
Canary Is.,
Central European Russia,
China North-Central,
China South-Central,
China Southeast,
Chita,
Colorado,
Connecticut,
Corse,
Cuba,
Cyprus,
Czechoslovakia,
Delaware,
Denmark,
District of Columbia,
Dominican Republic,
East Aegean Is.,
East European Russia,
East Himalaya,
El Salvador,
Finland,
Florida,
France,
Georgia,
Germany,
Great Britain,
Greece,
Guatemala,
Hainan,
Haiti,
Honduras,
Hungary,
Idaho,
Illinois,
India,
Indiana,
Inner Mongolia,
Iowa,
Iran,
Iraq,
Ireland,
Irkutsk,
Italy,
Japan,
Kamchatka,
Kazakhstan,
Kentucky,
Khabarovsk,
Korea,
Krasnoyarsk,
Kriti,
Krym,
Kuril Is.,
Labrador,
Laos,
Lebanon-Syria,
Libya,
Louisiana,
Magadan,
Maine,
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,
Nansei-shoto,
Nebraska,
Nepal,
Netherlands,
Nevada,
New Brunswick,
New Hampshire,
New Jersey,
New Mexico,
New York,
Newfoundland,
Nicaragua,
North Carolina,
North Caucasus,
North Dakota,
North European Russia,
Northwest European Russia,
Northwest Territories,
Norway,
Nova Scotia,
Nunavut,
Ohio,
Oklahoma,
Ontario,
Oregon,
Pakistan,
Palestine,
Pennsylvania,
Philippines,
Poland,
Portugal,
Primorye,
Prince Edward I.,
Qinghai,
Québec,
Rhode I.,
Romania,
Sakhalin,
Sardegna,
Saskatchewan,
Sicilia,
South Carolina,
South Dakota,
South European Russia,
Spain,
Sumatera,
Sweden,
Switzerland,
Taiwan,
Tennessee,
Texas,
Thailand,
Tibet,
Transcaucasus,
Tunisia,
Turkey,
Turkey-in-Europe,
Turks-Caicos Is.,
Tuva,
Ukraine,
Utah,
Vermont,
Vietnam,
Virginia,
Washington,
West Himalaya,
West Siberia,
West Virginia,
Wisconsin,
Wyoming,
Xinjiang,
Yakutskiya,
Yugoslavia,
Yukon
Introduced into:
Argentina Northeast,
Ascension,
Azores,
Bolivia,
Cape Provinces,
Chile Central,
Colombia,
Cook Is.,
Ethiopia,
Fiji,
Free State,
Føroyar,
Gambia,
Hawaii,
Iceland,
Kenya,
Lesotho,
Madagascar,
Madeira,
Mauritius,
New Caledonia,
New South Wales,
New Zealand North,
New Zealand South,
Niue,
Northern Provinces,
Ogasawara-shoto,
Queensland,
Réunion,
South Australia,
St.Helena,
Tasmania,
Trinidad-Tobago,
Tristan da Cunha,
Tubuai Is.,
Uruguay,
Vanuatu,
Victoria,
Wallis-Futuna Is.,
Western Australia