Native to:
China North-Central
Introduced into:
Afghanistan,
Alabama,
Argentina Northwest,
Arizona,
Arkansas,
Assam,
Baleares,
Bulgaria,
California,
Cape Verde,
China South-Central,
China Southeast,
Colorado,
Connecticut,
Corse,
Cyprus,
Delaware,
District of Columbia,
East European Russia,
East Himalaya,
Ecuador,
El Salvador,
Ethiopia,
Florida,
France,
Free State,
Georgia,
Germany,
Great Britain,
Greece,
Hungary,
Idaho,
Illinois,
India,
Indiana,
Inner Mongolia,
Iowa,
Iran,
Ireland,
Italy,
Japan,
Kansas,
Kazakhstan,
Kentucky,
Kenya,
Kirgizstan,
Korea,
Kriti,
Krym,
KwaZulu-Natal,
Laos,
Libya,
Louisiana,
Maine,
Marianas,
Maryland,
Massachusetts,
Mauritius,
Mexico Northwest,
Michigan,
Mississippi,
Missouri,
New Jersey,
New Mexico,
New South Wales,
New York,
New Zealand North,
North Carolina,
North Caucasus,
Northern Provinces,
Nova Scotia,
Ohio,
Oklahoma,
Ontario,
Oregon,
Pakistan,
Pennsylvania,
Portugal,
Queensland,
Rhode I.,
Rodrigues,
Romania,
Réunion,
Sardegna,
South Australia,
South Carolina,
South European Russia,
Spain,
St.Helena,
Switzerland,
Tadzhikistan,
Tennessee,
Texas,
Transcaucasus,
Turkey,
Turkmenistan,
Ukraine,
Utah,
Uzbekistan,
Vietnam,
Virginia,
West Himalaya,
West Virginia,
Wisconsin