Native to:
Alabama,
Alaska,
Albania,
Alberta,
Algeria,
Arizona,
Arkansas,
Austria,
Baleares,
Belgium,
British Columbia,
Bulgaria,
California,
China North-Central,
China South-Central,
China Southeast,
Colorado,
Connecticut,
Corse,
Delaware,
District of Columbia,
East Aegean Is.,
Florida,
France,
Georgia,
Germany,
Greece,
Hungary,
Idaho,
Illinois,
Indiana,
Iowa,
Iraq,
Italy,
Japan,
Kansas,
Kazakhstan,
Kentucky,
Korea,
Kriti,
Krym,
Labrador,
Lebanon-Syria,
Louisiana,
Maine,
Manitoba,
Maryland,
Massachusetts,
Mexico Northeast,
Mexico Northwest,
Michigan,
Minnesota,
Mississippi,
Missouri,
Montana,
Morocco,
Nebraska,
Nevada,
New Brunswick,
New Hampshire,
New Jersey,
New Mexico,
New York,
Newfoundland,
North Carolina,
North Caucasus,
North Dakota,
Northwest Territorie,
Nova Scotia,
Ohio,
Oklahoma,
Ontario,
Oregon,
Pennsylvania,
Poland,
Portugal,
Prince Edward I.,
Québec,
Rhode I.,
Romania,
Sardegna,
Saskatchewan,
Sicilia,
South Carolina,
South Dakota,
Spain,
Switzerland,
Tennessee,
Texas,
Transcaucasus,
Turkey,
Turkey-in-Europe,
Utah,
Vermont,
Virginia,
Washington,
West Virginia,
Wisconsin,
Wyoming,
Yugoslavia,
Yukon
Introduced into:
Central European Rus,
Czechoslovakia,
Denmark,
East European Russia,
Finland,
Great Britain,
Ireland,
Netherlands,
Northwest European R,
Norway,
Sweden