Native to:
Afghanistan,
Alaska,
Albania,
Alberta,
Aleutian Is.,
Altay,
Amur,
Arizona,
Assam,
Austria,
Baltic States,
Belarus,
Belgium,
British Columbia,
Bulgaria,
Buryatiya,
California,
Central European Russia,
China North-Central,
China South-Central,
China Southeast,
Chita,
Colorado,
Czechia-Slovakia,
Denmark,
East European Russia,
East Himalaya,
Finland,
France,
Føroyar,
Germany,
Great Britain,
Greece,
Greenland,
Hungary,
Iceland,
Idaho,
Inner Mongolia,
Iran,
Iraq,
Ireland,
Irkutsk,
Italy,
Japan,
Kamchatka,
Kazakhstan,
Khabarovsk,
Kirgizstan,
Korea,
Krasnoyarsk,
Krym,
Kuril Is.,
Labrador,
Laos,
Magadan,
Maine,
Manchuria,
Manitoba,
Mexico Northeast,
Michigan,
Minnesota,
Mongolia,
Montana,
Morocco,
Myanmar,
Nepal,
Netherlands,
Nevada,
New Brunswick,
New Hampshire,
New Mexico,
Newfoundland,
North Caucasus,
North European Russia,
Northwest European Russia,
Northwest Territories,
Norway,
Nunavut,
NW. Balkan Pen.,
Ontario,
Oregon,
Pakistan,
Poland,
Portugal,
Primorye,
Qinghai,
Québec,
Romania,
Sakhalin,
Saskatchewan,
South Dakota,
South European Russia,
Spain,
Svalbard,
Sweden,
Switzerland,
Tadzhikistan,
Thailand,
Tibet,
Transcaucasus,
Tuva,
Türkey,
Ukraine,
Utah,
Uzbekistan,
Vermont,
Washington,
West Himalaya,
West Siberia,
Wyoming,
Xinjiang,
Yakutiya,
Yukon
Introduced into:
Massachusetts,
Nova Scotia