Native to:
Alabama,
Alaska,
Albania,
Alberta,
Amur,
Arkansas,
Austria,
Belarus,
British Columbia,
California,
Chita,
Czechoslovakia,
East Himalaya,
France,
Georgia,
Germany,
Greece,
Hungary,
Illinois,
Indiana,
Iowa,
Italy,
Kamchatka,
Kentucky,
Khabarovsk,
Magadan,
Maryland,
Mississippi,
Missouri,
Mongolia,
Nepal,
North Carolina,
North Caucasus,
Ohio,
Oklahoma,
Oregon,
Pennsylvania,
Poland,
Primorye,
Romania,
Sakhalin,
South Carolina,
Spain,
Switzerland,
Tennessee,
Transcaucasus,
Turkey,
Ukraine,
Virginia,
Washington,
West Himalaya,
West Virginia,
Yakutskiya,
Yugoslavia,
Yukon
Introduced into:
Baltic States,
Central European Russia,
Delaware,
Finland,
Great Britain,
Ireland,
Maine,
Michigan,
New Jersey,
New South Wales,
New York,
North European Russia,
Northwest European Russia,
Norway,
Nova Scotia,
Ontario,
Québec,
Sweden,
Wisconsin