Native to:
Afghanistan,
Alabama,
Alaska,
Albania,
Alberta,
Algeria,
Altay,
Amur,
Argentina Northeast,
Argentina Northwest,
Argentina South,
Arizona,
Austria,
Baleares,
Baltic States,
Belarus,
Belgium,
Bermuda,
Bolivia,
Brazil South,
Brazil Southeast,
British Columbia,
Bulgaria,
California,
Cambodia,
Canary Is.,
Cape Verde,
Central European Rus,
Chile Central,
Chile North,
Chile South,
China North-Central,
China South-Central,
China Southeast,
Colombia,
Colorado,
Corse,
Costa Rica,
Cuba,
Cyprus,
Czechoslovakia,
Denmark,
Djibouti,
Dominican Republic,
East Aegean Is.,
East European Russia,
East Himalaya,
Ecuador,
Egypt,
El Salvador,
Eritrea,
Ethiopia,
Finland,
Florida,
France,
Georgia,
Germany,
Great Britain,
Greece,
Greenland,
Guatemala,
Gulf States,
Haiti,
Honduras,
Hungary,
Iceland,
India,
Inner Mongolia,
Iran,
Iraq,
Ireland,
Irkutsk,
Italy,
Jamaica,
Japan,
Kazakhstan,
Kenya,
Khabarovsk,
Kirgizstan,
Korea,
Krasnoyarsk,
Kriti,
Krym,
Kuril Is.,
Labrador,
Lebanon-Syria,
Libya,
Louisiana,
Madeira,
Magadan,
Manchuria,
Manitoba,
Mexico Central,
Mexico Gulf,
Mexico Northeast,
Mexico Northwest,
Mexico Southeast,
Mexico Southwest,
Mississippi,
Mongolia,
Morocco,
Nansei-shoto,
Nepal,
Netherlands,
Nevada,
New Mexico,
Newfoundland,
Nicaragua,
North Carolina,
North Caucasus,
North European Russi,
Northwest European R,
Northwest Territorie,
Norway,
Nova Scotia,
Nunavut,
Oklahoma,
Oman,
Ontario,
Pakistan,
Palestine,
Panamá,
Peru,
Philippines,
Poland,
Portugal,
Prince Edward I.,
Qinghai,
Québec,
Romania,
Sakhalin,
Sardegna,
Saudi Arabia,
Selvagens,
Sicilia,
Sinai,
Socotra,
Somalia,
South Carolina,
South European Russi,
Spain,
Sudan,
Svalbard,
Sweden,
Switzerland,
Tadzhikistan,
Taiwan,
Tanzania,
Tennessee,
Texas,
Tibet,
Transcaucasus,
Tunisia,
Turkey,
Turkey-in-Europe,
Turkmenistan,
Ukraine,
Utah,
Uzbekistan,
Venezuela,
Virginia,
Washington,
West Himalaya,
West Siberia,
Xinjiang,
Yakutskiya,
Yemen,
Yugoslavia,
Yukon
Introduced into:
Arkansas,
Connecticut,
Delaware,
District of Columbia,
Hawaii,
Idaho,
Illinois,
Indiana,
Iowa,
Kansas,
Kentucky,
KwaZulu-Natal,
Maine,
Maryland,
Massachusetts,
Michigan,
Minnesota,
Missouri,
Montana,
Nebraska,
New Brunswick,
New Hampshire,
New Jersey,
New South Wales,
New York,
New Zealand North,
New Zealand South,
Norfolk Is.,
North Dakota,
Ohio,
Oregon,
Pennsylvania,
Primorye,
Rhode I.,
Saskatchewan,
South Dakota,
Tasmania,
Uruguay,
Vermont,
West Virginia,
Wisconsin,
Wyoming