Native to:
Afghanistan,
Alabama,
Alaska,
Albania,
Alberta,
Aleutian Is.,
Algeria,
Altay,
Amur,
Arizona,
Arkansas,
Assam,
Austria,
Azores,
Bahamas,
Baleares,
Baltic States,
Bangladesh,
Belarus,
Belgium,
Belize,
British Columbia,
Bulgaria,
Buryatiya,
California,
Central European Rus,
China North-Central,
China South-Central,
China Southeast,
Chita,
Colombia,
Colorado,
Connecticut,
Corse,
Costa Rica,
Cyprus,
Czechoslovakia,
Delaware,
Denmark,
District of Columbia,
East Aegean Is.,
East European Russia,
East Himalaya,
El Salvador,
Ethiopia,
Finland,
Florida,
France,
Føroyar,
Georgia,
Germany,
Great Britain,
Greece,
Greenland,
Guatemala,
Honduras,
Hungary,
Idaho,
Illinois,
India,
Indiana,
Inner Mongolia,
Iowa,
Iran,
Iraq,
Ireland,
Irkutsk,
Italy,
Japan,
Kamchatka,
Kansas,
Kazakhstan,
Kentucky,
Kenya,
Khabarovsk,
Kirgizstan,
Korea,
Krasnoyarsk,
Kriti,
Krym,
Kuril Is.,
Labrador,
Lebanon-Syria,
Libya,
Louisiana,
Madeira,
Magadan,
Maine,
Manchuria,
Manitoba,
Maryland,
Massachusetts,
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 Russi,
Northwest European R,
Northwest Territorie,
Norway,
Nova Scotia,
Ogasawara-shoto,
Ohio,
Oklahoma,
Ontario,
Oregon,
Pakistan,
Palestine,
Panamá,
Pennsylvania,
Philippines,
Poland,
Portugal,
Primorye,
Prince Edward I.,
Qinghai,
Québec,
Rhode I.,
Romania,
Rwanda,
Sakhalin,
Sardegna,
Saskatchewan,
Saudi Arabia,
Sicilia,
Sinai,
South Carolina,
South Dakota,
South European Russi,
Spain,
Sudan,
Sweden,
Switzerland,
Tadzhikistan,
Taiwan,
Tanzania,
Tennessee,
Texas,
Thailand,
Tibet,
Transcaucasus,
Tunisia,
Turkey,
Turkey-in-Europe,
Turkmenistan,
Tuva,
Uganda,
Ukraine,
Utah,
Uzbekistan,
Vermont,
Vietnam,
Virginia,
Washington,
West Himalaya,
West Siberia,
West Virginia,
Wisconsin,
Wyoming,
Xinjiang,
Yakutskiya,
Yemen,
Yugoslavia,
Yukon,
Zambia
Introduced into:
Argentina Northeast,
Argentina Northwest,
Argentina South,
Bolivia,
Canary Is.,
Cape Provinces,
Chatham Is.,
Chile Central,
Chile North,
Chile South,
Cuba,
Dominican Republic,
Ecuador,
Falkland Is.,
Free State,
Hawaii,
Iceland,
Juan Fernández Is.,
Kermadec Is.,
KwaZulu-Natal,
Lesotho,
New South Wales,
New Zealand North,
New Zealand South,
Norfolk Is.,
Northern Provinces,
Northern Territory,
Nunavut,
Paraguay,
Peru,
Puerto Rico,
Queensland,
Réunion,
South Australia,
Tasmania,
Uruguay,
Victoria,
Western Australia