Native to:
Assam,
Cameroon,
Cape Provinces,
China North-Central,
China South-Central,
China Southeast,
East Himalaya,
Ethiopia,
Free State,
Hawaii,
India,
Japan,
Kazan-retto,
Kenya,
Korea,
KwaZulu-Natal,
Lesotho,
Madagascar,
Malawi,
Manchuria,
Myanmar,
Nansei-shoto,
Nepal,
Northern Provinces,
Ogasawara-shoto,
Pakistan,
Philippines,
Taiwan,
Tanzania,
Thailand,
Tibet,
Uganda,
Vietnam,
West Himalaya
Introduced into:
Alabama,
Argentina Northeast,
Arkansas,
Austria,
Azores,
Belgium,
Bermuda,
California,
Canary Is.,
Connecticut,
Florida,
France,
Georgia,
Germany,
Great Britain,
Hungary,
Ireland,
Italy,
Kentucky,
Louisiana,
Madeira,
Maryland,
Mississippi,
Netherlands,
New Jersey,
New South Wales,
New York,
Norfolk Is.,
Ohio,
Oregon,
Peru,
Queensland,
Romania,
Selvagens,
Sicilia,
South Australia,
South Carolina,
Spain,
Switzerland,
Tennessee,
Texas,
Victoria,
Virginia,
Yugoslavia