Native to:
Afghanistan,
Alabama,
Alaska,
Albania,
Alberta,
Aleutian Is.,
Algeria,
Altay,
Amur,
Arizona,
Arkansas,
Assam,
Austria,
Azores,
Baleares,
Baltic States,
Belarus,
Belgium,
British Columbia,
Bulgaria,
Buryatiya,
California,
Canary Is.,
Cape Provinces,
Central European Russia,
China North-Central,
China South-Central,
China Southeast,
Chita,
Colorado,
Connecticut,
Corse,
Cyprus,
Czechoslovakia,
Delaware,
Denmark,
District of Columbia,
Djibouti,
East Aegean Is.,
East European Russia,
East Himalaya,
Egypt,
Eritrea,
Ethiopia,
Finland,
Florida,
France,
Free State,
Georgia,
Germany,
Great Britain,
Greece,
Guatemala,
Gulf States,
Hainan,
Honduras,
Hungary,
Idaho,
Illinois,
Indiana,
Inner Mongolia,
Iowa,
Iran,
Iraq,
Ireland,
Irkutsk,
Italy,
Japan,
Kamchatka,
Kansas,
Kazakhstan,
Kentucky,
Khabarovsk,
Kirgizstan,
Korea,
Krasnoyarsk,
Kriti,
Krym,
Kuril Is.,
Kuwait,
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,
North Carolina,
North Caucasus,
North Dakota,
North European Russia,
Northwest European Russia,
Northwest Territories,
Norway,
Nova Scotia,
Nunavut,
Ogasawara-shoto,
Ohio,
Oklahoma,
Ontario,
Oregon,
Pakistan,
Palestine,
Pennsylvania,
Poland,
Portugal,
Primorye,
Prince Edward I.,
Qinghai,
Québec,
Rhode I.,
Romania,
Sakhalin,
Sardegna,
Saskatchewan,
Saudi Arabia,
Sicilia,
Sinai,
Somalia,
South Carolina,
South Dakota,
South European Russia,
Spain,
Sri Lanka,
Sudan,
Sweden,
Switzerland,
Tadzhikistan,
Taiwan,
Tennessee,
Texas,
Tibet,
Transcaucasus,
Tunisia,
Turkey,
Turkey-in-Europe,
Turkmenistan,
Tuva,
Ukraine,
Utah,
Uzbekistan,
Vermont,
Vietnam,
Virginia,
Washington,
West Himalaya,
West Siberia,
West Virginia,
Wisconsin,
Wyoming,
Xinjiang,
Yakutskiya,
Yugoslavia,
Yukon
Introduced into:
Argentina Northeast,
Argentina Northwest,
Argentina South,
Bangladesh,
Cambodia,
Caroline Is.,
Chile Central,
Colombia,
Comoros,
Cuba,
Dominican Republic,
Ecuador,
Falkland Is.,
Fiji,
Galápagos,
Guinea-Bissau,
Haiti,
Iceland,
India,
Jamaica,
Leeward Is.,
Mauritania,
Nauru,
New South Wales,
New Zealand North,
New Zealand South,
Newfoundland,
Niue,
Northern Provinces,
Philippines,
Puerto Rico,
Seychelles,
Solomon Is.,
South Australia,
Tasmania,
Thailand,
Tonga,
Trinidad-Tobago,
Victoria,
Western Australia