Doubtfully present in:
Manchuria
Native to:
Assam,
Bangladesh,
China North-Central,
China South-Central,
China Southeast,
East Himalaya,
Iran,
Japan,
Korea,
Myanmar,
Nansei-shoto,
Nepal,
Taiwan,
Tibet,
Transcaucasus,
West Himalaya
Introduced into:
Alabama,
Argentina Northeast,
Arkansas,
Austria,
Bulgaria,
California,
Connecticut,
Cyprus,
East Aegean Is.,
Florida,
Georgia,
Germany,
Illinois,
India,
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,
Pakistan,
Pennsylvania,
Peru,
Romania,
South Carolina,
Spain,
Tadzhikistan,
Tennessee,
Texas,
Turkmenistan,
Türkiye,
Ukraine,
Uzbekistan,
Virginia,
West Virginia