Native to:
Argentina Northeast,
Argentina Northwest,
Argentina South,
Bolivia,
Brazil South,
Brazil Southeast,
Chile Central,
Chile North,
Chile South,
Colombia,
Costa Rica,
Dominican Republic,
Ecuador,
El Salvador,
Germany,
Guatemala,
Haiti,
Honduras,
Jamaica,
Juan Fernández Is.,
Leeward Is.,
Mexico Central,
Mexico Gulf,
Mexico Northeast,
Mexico Northwest,
Mexico Southeast,
Mexico Southwest,
New Mexico,
Nicaragua,
Oregon,
Panamá,
Paraguay,
Peru,
Puerto Rico,
Spain,
Uruguay,
Venezuela,
Windward Is.,
Yugoslavia
Introduced into:
Alabama,
Albania,
Alberta,
Altay,
Amur,
Angola,
Arizona,
Arkansas,
Assam,
Austria,
Azores,
Bahamas,
Baltic States,
Belarus,
Belgium,
Benin,
Botswana,
British Columbia,
Bulgaria,
California,
Cameroon,
Canary Is.,
Cape Provinces,
Cape Verde,
Central African Repu,
Chatham Is.,
China Southeast,
Colorado,
Connecticut,
Corse,
Cyprus,
Czechoslovakia,
Delaware,
Denmark,
District of Columbia,
Djibouti,
East Aegean Is.,
East European Russia,
East Himalaya,
Eritrea,
Ethiopia,
Finland,
Florida,
France,
Free State,
Georgia,
Great Britain,
Greece,
Guinea,
Gulf of Guinea Is.,
Hawaii,
Hungary,
Illinois,
India,
Indiana,
Inner Mongolia,
Iowa,
Iran,
Ireland,
Italy,
Japan,
Jawa,
Kansas,
Kazakhstan,
Kentucky,
Khabarovsk,
Kirgizstan,
Korea,
Krym,
Kuril Is.,
KwaZulu-Natal,
Laccadive Is.,
Lebanon-Syria,
Lesotho,
Libya,
Madagascar,
Madeira,
Maine,
Malaya,
Manitoba,
Maryland,
Massachusetts,
Mauritius,
Michigan,
Minnesota,
Missouri,
Morocco,
Mozambique,
Myanmar,
Namibia,
Nebraska,
Nepal,
Netherlands,
New Brunswick,
New Guinea,
New Hampshire,
New Jersey,
New South Wales,
New York,
New Zealand North,
Newfoundland,
Norfolk Is.,
North Carolina,
North Caucasus,
North Dakota,
Northern Provinces,
Northwest European R,
Norway,
Nova Scotia,
Ohio,
Ontario,
Pakistan,
Palestine,
Pennsylvania,
Philippines,
Poland,
Portugal,
Primorye,
Prince Edward I.,
Queensland,
Québec,
Rhode I.,
Romania,
Réunion,
Sardegna,
Saskatchewan,
Sicilia,
South Australia,
South Carolina,
South European Russi,
Sri Lanka,
Sudan,
Swaziland,
Sweden,
Switzerland,
Tadzhikistan,
Taiwan,
Tasmania,
Tennessee,
Texas,
Thailand,
Tibet,
Transcaucasus,
Tubuai Is.,
Tunisia,
Turkey,
Turkey-in-Europe,
Turkmenistan,
Ukraine,
Uzbekistan,
Vanuatu,
Vermont,
Victoria,
Vietnam,
Virginia,
Washington,
West Himalaya,
West Siberia,
West Virginia,
Western Australia,
Wisconsin,
Yemen,
Zambia,
Zaïre,
Zimbabwe