Native to:
Alaska,
Alberta,
Altay,
Amur,
Arizona,
British Columbia,
Buryatiya,
California,
China North-Central,
China South-Central,
China Southeast,
Chita,
Colorado,
East European Russia,
Greenland,
Idaho,
Illinois,
Inner Mongolia,
Iowa,
Irkutsk,
Japan,
Kamchatka,
Kansas,
Kazakhstan,
Khabarovsk,
Kirgizstan,
Korea,
Krasnoyarsk,
Kuril Is.,
Magadan,
Maine,
Manchuria,
Manitoba,
Minnesota,
Missouri,
Mongolia,
Montana,
Nansei-shoto,
Nebraska,
Nevada,
New Brunswick,
New Mexico,
New York,
North Dakota,
Northwest European R,
Northwest Territorie,
Nova Scotia,
Nunavut,
Ohio,
Ontario,
Oregon,
Pennsylvania,
Primorye,
Prince Edward I.,
Qinghai,
Québec,
Sakhalin,
Saskatchewan,
South Dakota,
Tibet,
Transcaucasus,
Tuva,
Utah,
Washington,
West Siberia,
Wisconsin,
Wyoming,
Yakutskiya,
Yukon
Introduced into:
Austria,
Czechoslovakia,
Germany,
Great Britain,
Labrador,
Netherlands,
Norway