Native to:
Afghanistan,
Alabama,
Alaska,
Alberta,
Altay,
Arizona,
Arkansas,
Austria,
Baltic States,
Belarus,
Belgium,
Bolivia,
British Columbia,
Bulgaria,
California,
Central European Rus,
Colombia,
Colorado,
Connecticut,
Corse,
Costa Rica,
Czechoslovakia,
Delaware,
Denmark,
District of Columbia,
East European Russia,
Ecuador,
El Salvador,
Finland,
Florida,
France,
Georgia,
Germany,
Great Britain,
Greece,
Greenland,
Guatemala,
Haiti,
Honduras,
Hungary,
Iceland,
Idaho,
Illinois,
Indiana,
Iowa,
Iran,
Ireland,
Italy,
Kansas,
Kazakhstan,
Kentucky,
Labrador,
Louisiana,
Maine,
Manitoba,
Maryland,
Massachusetts,
Mexico Central,
Mexico Gulf,
Mexico Northeast,
Mexico Northwest,
Mexico Southeast,
Mexico Southwest,
Michigan,
Minnesota,
Mississippi,
Missouri,
Mongolia,
Montana,
Morocco,
Nebraska,
Netherlands,
Nevada,
New Brunswick,
New Hampshire,
New Jersey,
New Mexico,
New York,
Newfoundland,
North Carolina,
North Caucasus,
North Dakota,
North European Russi,
Northwest European R,
Northwest Territorie,
Norway,
Nova Scotia,
Nunavut,
Ohio,
Oklahoma,
Ontario,
Oregon,
Panamá,
Pennsylvania,
Philippines,
Poland,
Portugal,
Prince Edward I.,
Québec,
Rhode I.,
Romania,
Saskatchewan,
South Carolina,
South Dakota,
South European Russi,
Spain,
Sumatera,
Sweden,
Switzerland,
Taiwan,
Tennessee,
Texas,
Transcaucasus,
Turkey,
Turkey-in-Europe,
Tuva,
Ukraine,
Utah,
Venezuela,
Vermont,
Vietnam,
Virginia,
Washington,
West Virginia,
Wisconsin,
Wyoming,
Yakutskiya,
Yugoslavia,
Yukon
Introduced into:
Caroline Is.,
Gilbert Is.