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