Native to:
Afghanistan,
Altay,
Austria,
Baltic States,
Belarus,
Belgium,
Bulgaria,
Buryatiya,
Central European Russia,
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 Russia,
Northwest European Russia,
Norway,
Poland,
Primorye,
Romania,
South European Russia,
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