Native to:
Alaska,
Alberta,
Aleutian Is.,
Amur,
Austria,
Baltic States,
Belarus,
British Columbia,
Buryatiya,
Central European Russia,
China South-Central,
China Southeast,
Chita,
Czechoslovakia,
East European Russia,
East Himalaya,
Finland,
France,
Føroyar,
Germany,
Great Britain,
Greenland,
Iceland,
Irkutsk,
Italy,
Japan,
Kamchatka,
Khabarovsk,
Korea,
Krasnoyarsk,
Kuril Is.,
Labrador,
Magadan,
Manchuria,
Manitoba,
Michigan,
Minnesota,
Mongolia,
Montana,
Nepal,
Newfoundland,
North Carolina,
North European Russia,
Northwest Territories,
Norway,
Nunavut,
Ontario,
Poland,
Primorye,
Québec,
Romania,
Sakhalin,
Saskatchewan,
South Carolina,
Spain,
Svalbard,
Sweden,
Switzerland,
Ukraine,
West Siberia,
Yakutskiya,
Yugoslavia,
Yukon