Native to:
Alaska,
Albania,
Alberta,
Aleutian Is.,
Altay,
Austria,
Baltic States,
Belarus,
Belgium,
British Columbia,
Bulgaria,
Buryatiya,
Central European Russia,
Chita,
Czechoslovakia,
Denmark,
East European Russia,
Finland,
France,
Føroyar,
Germany,
Great Britain,
Greece,
Greenland,
Hungary,
Iceland,
Inner Mongolia,
Iran,
Ireland,
Irkutsk,
Italy,
Kamchatka,
Kazakhstan,
Khabarovsk,
Kirgizstan,
Krasnoyarsk,
Krym,
Labrador,
Manchuria,
Manitoba,
Mongolia,
Netherlands,
New Brunswick,
New Hampshire,
New York,
Newfoundland,
North Caucasus,
North European Russia,
Northwest European Russia,
Northwest Territories,
Norway,
Nova Scotia,
Nunavut,
Ontario,
Oregon,
Poland,
Portugal,
Primorye,
Québec,
Romania,
Sakhalin,
South European Russia,
Spain,
Sweden,
Switzerland,
Tadzhikistan,
Transcaucasus,
Turkey,
Turkey-in-Europe,
Tuva,
Ukraine,
Uzbekistan,
Washington,
West Siberia,
Xinjiang,
Yakutskiya,
Yugoslavia,
Yukon
Introduced into:
Amur,
Arizona,
Colorado,
Connecticut,
Corse,
Idaho,
Kuril Is.,
Maine,
Massachusetts,
Michigan,
Montana,
New Mexico,
Saskatchewan,
Vermont,
Wisconsin