Doubtfully present in:
Manchuria
Native to:
Assam,
Bangladesh,
China North-Central,
China South-Central,
China Southeast,
East Himalaya,
India,
Iran,
Japan,
Korea,
Myanmar,
Nansei-shoto,
Nepal,
Pakistan,
Taiwan,
Tibet,
Transcaucasus,
West Himalaya
Introduced into:
Alabama,
Argentina Northeast,
Arkansas,
Bulgaria,
California,
Connecticut,
Cyprus,
East Aegean Is.,
Florida,
Georgia,
Germany,
Illinois,
Indiana,
Iraq,
Italy,
Jawa,
Kansas,
Kentucky,
Krym,
KwaZulu-Natal,
Louisiana,
Maryland,
Mississippi,
Missouri,
New Jersey,
New Mexico,
New York,
North Carolina,
North Caucasus,
Northern Provinces,
Ohio,
Oklahoma,
Pennsylvania,
Peru,
Romania,
South Carolina,
Spain,
Tadzhikistan,
Tennessee,
Texas,
Turkey,
Turkmenistan,
Ukraine,
Uzbekistan,
Virginia,
West Virginia