Native to:
Alaska,
Alberta,
Aleutian Is.,
Altay,
Amur,
Austria,
Belarus,
British Columbia,
Bulgaria,
Buryatiya,
California,
Central European Rus,
China North-Central,
Chita,
Colorado,
Corse,
Czechoslovakia,
East European Russia,
France,
Germany,
Greenland,
Hungary,
Idaho,
Inner Mongolia,
Irkutsk,
Italy,
Japan,
Kamchatka,
Khabarovsk,
Krasnoyarsk,
Kuril Is.,
Labrador,
Magadan,
Maine,
Manchuria,
Manitoba,
Massachusetts,
Michigan,
Minnesota,
Mongolia,
Montana,
New Brunswick,
New Hampshire,
New York,
Newfoundland,
North Carolina,
North European Russi,
Northwest Territorie,
Nova Scotia,
Ontario,
Oregon,
Pennsylvania,
Poland,
Primorye,
Prince Edward I.,
Québec,
Romania,
Sakhalin,
Saskatchewan,
Switzerland,
Tennessee,
Ukraine,
Vermont,
Washington,
West Siberia,
Wisconsin,
Wyoming,
Yakutskiya,
Yugoslavia,
Yukon
Introduced into:
New Zealand South