Native to:
Alabama,
Albania,
Algeria,
Angola,
Arizona,
Arkansas,
Austria,
Belgium,
Botswana,
British Columbia,
Bulgaria,
California,
Cape Provinces,
Colombia,
Connecticut,
Corse,
Costa Rica,
Cuba,
Czechoslovakia,
Delaware,
District of Columbia,
Dominican Republic,
Florida,
France,
Georgia,
Germany,
Great Britain,
Greece,
Guatemala,
Haiti,
Hungary,
Idaho,
Illinois,
Indiana,
Iowa,
Iran,
Italy,
Jamaica,
Kansas,
Kentucky,
KwaZulu-Natal,
Lebanon-Syria,
Lesotho,
Louisiana,
Maine,
Maryland,
Massachusetts,
Mexico Central,
Mexico Gulf,
Mexico Northeast,
Mexico Northwest,
Mexico Southeast,
Mexico Southwest,
Michigan,
Minnesota,
Mississippi,
Missouri,
Morocco,
Namibia,
Nebraska,
Netherlands,
New Brunswick,
New Hampshire,
New Jersey,
New Mexico,
New York,
Newfoundland,
North Carolina,
North Caucasus,
Northern Provinces,
Nova Scotia,
Ohio,
Oklahoma,
Ontario,
Oregon,
Pennsylvania,
Poland,
Portugal,
Puerto Rico,
Québec,
Rhode I.,
Romania,
Sardegna,
South Carolina,
Spain,
Switzerland,
Tennessee,
Texas,
Transcaucasus,
Tunisia,
Turkey,
Turkey-in-Europe,
Ukraine,
Venezuela,
Vermont,
Virginia,
Washington,
West Virginia,
Wisconsin,
Yugoslavia,
Zambia,
Zaïre,
Zimbabwe
Extinct in:
Palestine,
Socotra
Introduced into:
Bermuda,
Hawaii,
New South Wales,
Victoria