Native to:
Alabama,
Albania,
Arkansas,
Austria,
Baltic States,
Belarus,
Bulgaria,
Central European Russia,
China North-Central,
China South-Central,
China Southeast,
Connecticut,
Corse,
Czechoslovakia,
Delaware,
Denmark,
District of Columbia,
Finland,
Florida,
France,
Georgia,
Germany,
Greece,
Hungary,
Illinois,
Indiana,
Iowa,
Italy,
Japan,
Kazakhstan,
Kentucky,
Kirgizstan,
Korea,
Maine,
Manchuria,
Manitoba,
Maryland,
Massachusetts,
Michigan,
Minnesota,
Mississippi,
Missouri,
New Brunswick,
New Hampshire,
New Jersey,
New York,
North Carolina,
North European Russia,
Northwest European Russia,
Norway,
Nova Scotia,
Ohio,
Ontario,
Pakistan,
Pennsylvania,
Poland,
Primorye,
Québec,
Rhode I.,
Romania,
South Carolina,
Spain,
Sweden,
Switzerland,
Tadzhikistan,
Tennessee,
Ukraine,
Vermont,
Virginia,
West Himalaya,
West Siberia,
West Virginia,
Wisconsin,
Yugoslavia
Introduced into:
Belgium,
Great Britain