Doubtfully present in:
Nepal
Native to:
Albania,
Austria,
Baltic States,
Belarus,
Belgium,
Bulgaria,
Central European Russia,
Corse,
Czechia-Slovakia,
Denmark,
East European Russia,
Finland,
France,
Germany,
Great Britain,
Greece,
Hungary,
Ireland,
Italy,
Krym,
Netherlands,
North European Russia,
Northwest European Russia,
Norway,
NW. Balkan Pen.,
Poland,
Portugal,
Romania,
Sardegna,
South European Russia,
Spain,
Sweden,
Switzerland,
Ukraine,
West Siberia
Introduced into:
Alaska,
Alberta,
Bangladesh,
British Columbia,
California,
Connecticut,
Idaho,
Illinois,
Iowa,
Kentucky,
Kuril Is.,
Labrador,
Louisiana,
Maine,
Manitoba,
Maryland,
Massachusetts,
Michigan,
Minnesota,
Missouri,
Montana,
New Brunswick,
New Hampshire,
New Jersey,
New York,
New Zealand North,
New Zealand South,
Newfoundland,
North Dakota,
Northwest Territories,
Nova Scotia,
Ohio,
Ontario,
Oregon,
Pennsylvania,
Primorye,
Prince Edward I.,
Québec,
Rhode I.,
Saskatchewan,
South Dakota,
Tennessee,
Vermont,
Washington,
West Himalaya,
Wisconsin