Native to:
Altay,
Amur,
Austria,
Baltic States,
Belarus,
Belgium,
Bulgaria,
Central European Rus,
Czechoslovakia,
Denmark,
East Aegean Is.,
East European Russia,
Finland,
France,
Føroyar,
Germany,
Great Britain,
Greece,
Hungary,
Ireland,
Italy,
Kamchatka,
Kazakhstan,
Khabarovsk,
Kirgizstan,
Krasnoyarsk,
Krym,
Kuril Is.,
Magadan,
Mongolia,
Netherlands,
North Caucasus,
North European Russi,
Northwest European R,
Norway,
Oman,
Poland,
Primorye,
Romania,
Sakhalin,
Sardegna,
Sicilia,
South European Russi,
Spain,
Sweden,
Switzerland,
Tadzhikistan,
Transcaucasus,
Turkey,
Turkey-in-Europe,
Tuva,
Ukraine,
Uzbekistan,
West Siberia,
Yugoslavia
Introduced into:
Alaska,
Alberta,
Assam,
British Columbia,
California,
Chatham Is.,
Colorado,
Connecticut,
Delaware,
Fiji,
Guatemala,
Idaho,
Illinois,
India,
Indiana,
Iowa,
Japan,
Jawa,
Kentucky,
Maine,
Manitoba,
Maryland,
Massachusetts,
Michigan,
Minnesota,
Missouri,
Montana,
Nevada,
New Brunswick,
New Hampshire,
New Jersey,
New York,
Newfoundland,
North Dakota,
Northwest Territorie,
Nova Scotia,
Ohio,
Ontario,
Oregon,
Pennsylvania,
Prince Edward I.,
Québec,
Rhode I.,
Saskatchewan,
South Dakota,
Utah,
Vermont,
Vietnam,
Washington,
Wisconsin,
Wyoming