Native to:
Algeria,
Angola,
Ascension,
Assam,
Burundi,
Cambodia,
Canary Is.,
Cape Provinces,
China North-Central,
China South-Central,
China Southeast,
Corse,
East Himalaya,
Ethiopia,
France,
Free State,
India,
Italy,
Japan,
Kenya,
Korea,
Krym,
KwaZulu-Natal,
Laos,
Lebanon-Syria,
Lesotho,
Madagascar,
Malawi,
Myanmar,
Nansei-shoto,
Nepal,
Northern Provinces,
Pakistan,
Philippines,
Rwanda,
Réunion,
Socotra,
Spain,
Sri Lanka,
St.Helena,
Swaziland,
Switzerland,
Taiwan,
Tanzania,
Thailand,
Tibet,
Transcaucasus,
Turkey,
Uganda,
Vietnam,
West Himalaya,
Yemen,
Zambia,
Zaïre,
Zimbabwe
Extinct in:
Sardegna,
Sicilia
Introduced into:
Azores,
California,
Colombia,
Costa Rica,
El Salvador,
Florida,
Great Britain,
Guatemala,
Hawaii,
Honduras,
Hungary,
Jamaica,
Louisiana,
Maryland,
Mexico Central,
Mexico Gulf,
Mexico Northeast,
Mexico Northwest,
Mexico Southeast,
Mexico Southwest,
Netherlands,
New South Wales,
New Zealand South,
Nicaragua,
Panamá,
Peru,
Vanuatu