Native to:
Alaska,
Alberta,
Aleutian Is.,
Altay,
Amur,
Austria,
Baltic States,
Belarus,
British Columbia,
Buryatiya,
Central European Rus,
China North-Central,
China South-Central,
China Southeast,
Chita,
Colorado,
Connecticut,
Czechoslovakia,
East European Russia,
Finland,
France,
Illinois,
Indiana,
Inner Mongolia,
Irkutsk,
Italy,
Japan,
Kamchatka,
Kazakhstan,
Khabarovsk,
Korea,
Krasnoyarsk,
Kuril Is.,
Labrador,
Maine,
Manchuria,
Manitoba,
Massachusetts,
Michigan,
Minnesota,
Mongolia,
Nepal,
New Brunswick,
New Hampshire,
New York,
Newfoundland,
North European Russi,
Northwest European R,
Northwest Territorie,
Norway,
Nova Scotia,
Ontario,
Pennsylvania,
Philippines,
Poland,
Primorye,
Prince Edward I.,
Qinghai,
Québec,
Romania,
Sakhalin,
Saskatchewan,
South European Russi,
Sweden,
Switzerland,
Taiwan,
Tibet,
Tuva,
Ukraine,
Vermont,
West Siberia,
Wisconsin,
Yakutskiya,
Yugoslavia,
Yukon
Extinct in:
California,
Hungary