Native to:
Afghanistan,
Altay,
Austria,
Baltic States,
Belarus,
Belgium,
Bulgaria,
Buryatiya,
Central European Rus,
Czechoslovakia,
Denmark,
East European Russia,
Finland,
France,
Føroyar,
Germany,
Great Britain,
Greece,
Hungary,
Iceland,
India,
Ireland,
Irkutsk,
Italy,
Kamchatka,
Kazakhstan,
Kirgizstan,
Krasnoyarsk,
Magadan,
Nepal,
Netherlands,
North Caucasus,
North European Russi,
Northwest European R,
Norway,
Poland,
Primorye,
Romania,
South European Russi,
Spain,
Svalbard,
Sweden,
Switzerland,
Tadzhikistan,
Transcaucasus,
Turkey,
Turkmenistan,
Tuva,
Ukraine,
Uzbekistan,
West Himalaya,
West Siberia,
Yakutskiya,
Yugoslavia
Introduced into:
Alberta,
Bangladesh,
British Columbia,
California,
Canary Is.,
Colorado,
Haiti,
Illinois,
Labrador,
Manitoba,
Marianas,
Maryland,
Mexico Northwest,
Minnesota,
Montana,
New Brunswick,
New Mexico,
New York,
New Zealand North,
Newfoundland,
Nova Scotia,
Ontario,
Oregon,
Prince Edward I.,
Québec,
Saskatchewan,
Tennessee,
Vermont,
Washington,
Wyoming