Native to:
China North-Central,
China Southeast
Introduced into:
Afghanistan,
Alabama,
Alberta,
Algeria,
Amur,
Arizona,
Arkansas,
Assam,
Austria,
Bangladesh,
Belgium,
Borneo,
Brazil South,
Brazil Southeast,
Brazil West-Central,
British Columbia,
Bulgaria,
California,
Cambodia,
Cape Provinces,
Cayman Is.,
Central European Russia,
China South-Central,
Colombia,
Colorado,
Connecticut,
Cuba,
Cyprus,
Czechoslovakia,
Delaware,
District of Columbia,
East European Russia,
East Himalaya,
Egypt,
Florida,
France,
Free State,
French Guiana,
Georgia,
Germany,
Great Britain,
Greece,
Hainan,
Hawaii,
Hungary,
Illinois,
India,
Indiana,
Inner Mongolia,
Iowa,
Iran,
Iraq,
Italy,
Japan,
Jawa,
Kansas,
Kazakhstan,
Kentucky,
Khabarovsk,
Kirgizstan,
Korea,
Kriti,
Krym,
KwaZulu-Natal,
Laos,
Lebanon-Syria,
Leeward Is.,
Lesser Sunda Is.,
Libya,
Louisiana,
Maine,
Malawi,
Malaya,
Maldives,
Maluku,
Manchuria,
Manitoba,
Maryland,
Massachusetts,
Mauritius,
Mexico Central,
Mexico Southeast,
Michigan,
Minnesota,
Mississippi,
Missouri,
Montana,
Mozambique,
Myanmar,
Nansei-shoto,
Nebraska,
Nepal,
New Brunswick,
New Guinea,
New Hampshire,
New Jersey,
New Mexico,
New York,
New Zealand North,
New Zealand South,
North Carolina,
North Caucasus,
North Dakota,
Northern Provinces,
Nova Scotia,
Ohio,
Oklahoma,
Oman,
Ontario,
Oregon,
Pakistan,
Palestine,
Pennsylvania,
Philippines,
Poland,
Primorye,
Québec,
Rhode I.,
Romania,
Réunion,
Sardegna,
Saudi Arabia,
South Carolina,
South Dakota,
South European Russia,
Spain,
Sri Lanka,
Sumatera,
Switzerland,
Tadzhikistan,
Taiwan,
Tasmania,
Tennessee,
Texas,
Thailand,
Tibet,
Transcaucasus,
Turkey,
Turkey-in-Europe,
Turkmenistan,
Ukraine,
Uzbekistan,
Vermont,
Vietnam,
Virginia,
Washington,
West Himalaya,
West Virginia,
Windward Is.,
Wisconsin,
Wyoming,
Xinjiang,
Yemen,
Yugoslavia,
Zimbabwe