Native to:
Afghanistan,
Alabama,
Alaska,
Albania,
Alberta,
Algeria,
Altay,
Amur,
Arizona,
Arkansas,
Austria,
Azores,
Baleares,
Baltic States,
Belarus,
Belgium,
British Columbia,
Bulgaria,
Buryatiya,
California,
Canary Is.,
Central European Rus,
China North-Central,
China South-Central,
China Southeast,
Chita,
Colorado,
Connecticut,
Corse,
Costa Rica,
Cyprus,
Czechoslovakia,
Delaware,
Denmark,
District of Columbia,
East Aegean Is.,
East European Russia,
East Himalaya,
Egypt,
Eritrea,
Ethiopia,
Finland,
Florida,
France,
Føroyar,
Georgia,
Germany,
Great Britain,
Greece,
Hainan,
Hungary,
Iceland,
Idaho,
Illinois,
Indiana,
Inner Mongolia,
Iowa,
Iran,
Iraq,
Ireland,
Irkutsk,
Italy,
Japan,
Kamchatka,
Kansas,
Kazakhstan,
Kentucky,
Khabarovsk,
Kirgizstan,
Korea,
Krasnoyarsk,
Kriti,
Krym,
Kuril Is.,
Labrador,
Lebanon-Syria,
Libya,
Louisiana,
Madeira,
Magadan,
Maine,
Manchuria,
Manitoba,
Maryland,
Michigan,
Minnesota,
Mississippi,
Missouri,
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 Russi,
Northwest European R,
Northwest Territorie,
Norway,
Nova Scotia,
Ohio,
Oklahoma,
Ontario,
Oregon,
Pakistan,
Palestine,
Pennsylvania,
Poland,
Portugal,
Primorye,
Qinghai,
Québec,
Rhode I.,
Romania,
Sakhalin,
Sardegna,
Saskatchewan,
Saudi Arabia,
Sicilia,
South Carolina,
South Dakota,
South European Russi,
Spain,
Sweden,
Switzerland,
Tadzhikistan,
Taiwan,
Tennessee,
Texas,
Tibet,
Transcaucasus,
Tunisia,
Turkey,
Turkey-in-Europe,
Turkmenistan,
Ukraine,
Utah,
Uzbekistan,
Vermont,
Virginia,
Washington,
West Himalaya,
West Siberia,
West Virginia,
Wisconsin,
Wyoming,
Xinjiang,
Yakutskiya,
Yemen,
Yugoslavia,
Yukon
Introduced into:
Angola,
Argentina Northeast,
Argentina Northwest,
Argentina South,
Bolivia,
Brazil South,
Brazil Southeast,
Cape Provinces,
Chad,
Chile Central,
Chile North,
Chile South,
Colombia,
Ecuador,
Falkland Is.,
Free State,
Guatemala,
Hawaii,
Juan Fernández Is.,
Kenya,
KwaZulu-Natal,
Lesotho,
Massachusetts,
Mexico Central,
Mexico Northeast,
Mexico Northwest,
Namibia,
New Zealand North,
Newfoundland,
Northern Provinces,
Paraguay,
Prince Edward I.,
Svalbard,
Tasmania,
Tristan da Cunha,
Uruguay,
Zimbabwe