Native to:
Alabama,
Albania,
Alberta,
Algeria,
Altay,
Amur,
Argentina Northwest,
Argentina South,
Arkansas,
Assam,
Austria,
Azores,
Baltic States,
Belarus,
Belgium,
Bolivia,
Borneo,
British Columbia,
Bulgaria,
Burundi,
California,
Cameroon,
Cape Provinces,
Central European Rus,
Chile Central,
Chile South,
China North-Central,
China South-Central,
China Southeast,
Colombia,
Colorado,
Comoros,
Connecticut,
Corse,
Costa Rica,
Czechoslovakia,
Delaware,
Denmark,
District of Columbia,
East European Russia,
East Himalaya,
Ecuador,
El Salvador,
Eritrea,
Ethiopia,
Finland,
Florida,
France,
Free State,
Georgia,
Germany,
Great Britain,
Greece,
Guatemala,
Gulf of Guinea Is.,
Hawaii,
Honduras,
Hungary,
Idaho,
Illinois,
India,
Indiana,
Inner Mongolia,
Iowa,
Iran,
Ireland,
Italy,
Japan,
Jawa,
Kansas,
Kazakhstan,
Kentucky,
Kenya,
Khabarovsk,
Korea,
Krym,
Kuril Is.,
KwaZulu-Natal,
Laos,
Lesotho,
Lesser Sunda Is.,
Louisiana,
Madagascar,
Maine,
Malawi,
Malaya,
Maluku,
Manchuria,
Manitoba,
Maryland,
Massachusetts,
Mexico Central,
Mexico Gulf,
Mexico Northeast,
Mexico Northwest,
Mexico Southeast,
Mexico Southwest,
Michigan,
Minnesota,
Mississippi,
Missouri,
Mongolia,
Montana,
Morocco,
Mozambique,
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,
Northern Provinces,
Northwest European R,
Norway,
Nova Scotia,
Ohio,
Oklahoma,
Ontario,
Oregon,
Pakistan,
Panamá,
Pennsylvania,
Peru,
Philippines,
Poland,
Portugal,
Primorye,
Prince Edward I.,
Qinghai,
Québec,
Rhode I.,
Romania,
Rwanda,
Sardegna,
Saskatchewan,
Sicilia,
South Carolina,
South Dakota,
Spain,
Sudan,
Sulawesi,
Sumatera,
Swaziland,
Sweden,
Switzerland,
Taiwan,
Tanzania,
Tennessee,
Texas,
Tibet,
Transcaucasus,
Tunisia,
Turkey,
Turkey-in-Europe,
Uganda,
Ukraine,
Venezuela,
Vermont,
Vietnam,
Virginia,
Washington,
West Himalaya,
West Siberia,
West Virginia,
Wisconsin,
Wyoming,
Yemen,
Yugoslavia,
Zambia,
Zaïre,
Zimbabwe
Extinct in:
Sri Lanka