Doubtfully present in:
Hainan,
Qinghai
Native to:
Alabama,
Argentina Northeast,
Argentina Northwest,
Arizona,
Arkansas,
Assam,
Bolivia,
Brazil South,
China North-Central,
China South-Central,
China Southeast,
Connecticut,
Delaware,
District of Columbia,
East Himalaya,
Florida,
Georgia,
Illinois,
Indiana,
Inner Mongolia,
Iowa,
Iran,
Japan,
Kansas,
Kentucky,
Korea,
Laos,
Louisiana,
Maine,
Manchuria,
Maryland,
Massachusetts,
Mexico Northeast,
Mexico Northwest,
Michigan,
Minnesota,
Mississippi,
Missouri,
Nebraska,
Nevada,
New Hampshire,
New Jersey,
New York,
North Carolina,
North Dakota,
Ohio,
Oklahoma,
Paraguay,
Pennsylvania,
Philippines,
Rhode I.,
South Carolina,
South Dakota,
Sulawesi,
Taiwan,
Tennessee,
Texas,
Thailand,
Tibet,
Transcaucasus,
Uruguay,
Utah,
Vermont,
Vietnam,
Virginia,
West Virginia,
Wisconsin,
Wyoming
Introduced into:
Alaska,
Austria,
Baltic States,
Belarus,
Bulgaria,
California,
Cambodia,
Cape Provinces,
Central European Rus,
Colorado,
Czechoslovakia,
France,
Free State,
Germany,
Hungary,
Idaho,
India,
Iraq,
Italy,
Kazakhstan,
Kenya,
Kirgizstan,
Krym,
KwaZulu-Natal,
Lesotho,
Mexico Southwest,
Montana,
Mozambique,
New Caledonia,
New Mexico,
New South Wales,
North Caucasus,
Northern Provinces,
Nova Scotia,
Ontario,
Pakistan,
Portugal,
Queensland,
Romania,
Saudi Arabia,
South Australia,
South European Russi,
Spain,
Tadzhikistan,
Turkmenistan,
Uganda,
Ukraine,
Uzbekistan,
Victoria,
Washington,
West Himalaya,
Zimbabwe