Native to:
Alabama,
Albania,
Arkansas,
Austria,
Baltic States,
Belgium,
Bulgaria,
China North-Central,
China South-Central,
China Southeast,
Connecticut,
Corse,
Czechoslovakia,
Delaware,
Denmark,
District of Columbia,
East European Russia,
Florida,
France,
Georgia,
Germany,
Great Britain,
Greece,
Hungary,
Illinois,
Indiana,
Iran,
Italy,
Japan,
Kentucky,
Korea,
Krym,
Louisiana,
Maine,
Maryland,
Massachusetts,
Mexico Central,
Mexico Gulf,
Mexico Northeast,
Michigan,
Mississippi,
Missouri,
Netherlands,
New Brunswick,
New Hampshire,
New Jersey,
New York,
North Carolina,
North Caucasus,
Norway,
Nova Scotia,
Ohio,
Oklahoma,
Ontario,
Pennsylvania,
Poland,
Prince Edward I.,
Québec,
Rhode I.,
Romania,
Sicilia,
South Carolina,
South European Russi,
Spain,
Sweden,
Switzerland,
Taiwan,
Tennessee,
Texas,
Transcaucasus,
Turkey,
Turkey-in-Europe,
Ukraine,
Vermont,
Vietnam,
Virginia,
West Virginia,
Wisconsin,
Yugoslavia