Native to:
China South-Central,
China Southeast,
Taiwan
Introduced into:
Afghanistan,
Alabama,
Assam,
Belgium,
Bermuda,
Bulgaria,
Cameroon,
Connecticut,
Cuba,
Czechoslovakia,
Delaware,
District of Columbia,
East Himalaya,
Ecuador,
France,
Georgia,
Germany,
Great Britain,
Greece,
Illinois,
India,
Indiana,
Iran,
Italy,
Japan,
Juan Fernández Is.,
Kansas,
Kentucky,
Korea,
Louisiana,
Marianas,
Maryland,
Mexico Central,
Mexico Gulf,
Mexico Northeast,
Mexico Southeast,
Mexico Southwest,
Mississippi,
Missouri,
Nebraska,
New York,
North Carolina,
North Caucasus,
Northern Provinces,
Ohio,
Pakistan,
Pennsylvania,
Romania,
Sardegna,
Sicilia,
South Carolina,
Tadzhikistan,
Tennessee,
Texas,
Thailand,
Transcaucasus,
Tubuai Is.,
Tunisia,
Turkmenistan,
Ukraine,
Utah,
Uzbekistan,
Vietnam,
Virginia,
West Virginia,
Yugoslavia