Native to:
Afghanistan,
Alaska,
Albania,
Alberta,
Altay,
Amur,
Argentina South,
Arizona,
Assam,
Austria,
Belgium,
British Columbia,
Bulgaria,
Buryatiya,
California,
Chile Central,
China North-Central,
China South-Central,
Chita,
Colorado,
Connecticut,
Corse,
Czechoslovakia,
East European Russia,
East Himalaya,
Finland,
France,
Føroyar,
Germany,
Great Britain,
Iceland,
Idaho,
Illinois,
Iowa,
Iran,
Ireland,
Irkutsk,
Italy,
Japan,
Kamchatka,
Kazakhstan,
Khabarovsk,
Kirgizstan,
Korea,
Krasnoyarsk,
Kuril Is.,
Labrador,
Magadan,
Maine,
Manitoba,
Massachusetts,
Michigan,
Minnesota,
Mongolia,
Montana,
Myanmar,
Nepal,
Nevada,
New Brunswick,
New Hampshire,
New Jersey,
New Mexico,
New York,
Newfoundland,
North Caucasus,
North European Russia,
Northwest Territories,
Norway,
Nova Scotia,
Ontario,
Oregon,
Pakistan,
Pennsylvania,
Poland,
Portugal,
Primorye,
Qinghai,
Québec,
Sakhalin,
Saskatchewan,
South Dakota,
Spain,
Sweden,
Tadzhikistan,
Taiwan,
Tibet,
Transcaucasus,
Turkey,
Tuva,
Utah,
Vermont,
Washington,
West Himalaya,
West Siberia,
West Virginia,
Wisconsin,
Wyoming,
Xinjiang,
Yakutskiya,
Yugoslavia,
Yukon
Extinct in:
Romania