Native to:
Alaska,
Alberta,
Aleutian Is.,
Amur,
Argentina Northeast,
Argentina Northwest,
Argentina South,
Arizona,
Arkansas,
Assam,
Bolivia,
British Columbia,
California,
Chile Central,
Chile North,
Chile South,
China North-Central,
China South-Central,
China Southeast,
Colombia,
Colorado,
Connecticut,
East Himalaya,
Ecuador,
Guatemala,
Idaho,
Illinois,
Inner Mongolia,
Iowa,
Japan,
Kansas,
Khabarovsk,
Korea,
Kuril Is.,
Maine,
Manchuria,
Manitoba,
Massachusetts,
Mexico Central,
Mexico Gulf,
Mexico Northeast,
Mexico Northwest,
Mexico Southeast,
Mexico Southwest,
Michigan,
Minnesota,
Missouri,
Montana,
Myanmar,
Nebraska,
Nepal,
Nevada,
New Brunswick,
New Hampshire,
New Jersey,
New Mexico,
New York,
Nicaragua,
Northwest Territorie,
Nova Scotia,
Oklahoma,
Ontario,
Oregon,
Pakistan,
Pennsylvania,
Peru,
Primorye,
Prince Edward I.,
Québec,
Rhode I.,
Sakhalin,
Saskatchewan,
South Dakota,
Taiwan,
Texas,
Tibet,
Utah,
Venezuela,
Vermont,
Vietnam,
Virginia,
Washington,
West Virginia,
Wisconsin,
Wyoming,
Yukon
Introduced into:
Austria,
Azores,
Baltic States,
Belgium,
Bulgaria,
Central European Rus,
Czechoslovakia,
Delaware,
Denmark,
Finland,
France,
Free State,
Germany,
Great Britain,
Greece,
Ireland,
Italy,
Jawa,
KwaZulu-Natal,
Madeira,
Netherlands,
New South Wales,
Newfoundland,
Northwest European R,
Norway,
Poland,
Portugal,
Romania,
Sweden,
Switzerland,
Tasmania,
Victoria,
Yugoslavia