Native to:
Afghanistan,
Alaska,
Alberta,
Algeria,
Altay,
Argentina Northeast,
Argentina Northwest,
Argentina South,
Arizona,
Austria,
Baltic States,
Belarus,
Belgium,
Bolivia,
British Columbia,
Bulgaria,
Buryatiya,
California,
Central European Rus,
Chile Central,
China North-Central,
China South-Central,
Chita,
Colorado,
Connecticut,
Czechoslovakia,
Denmark,
East European Russia,
East Himalaya,
Finland,
France,
Føroyar,
Germany,
Great Britain,
Hungary,
Iceland,
Idaho,
Illinois,
Indiana,
Inner Mongolia,
Iowa,
Iran,
Ireland,
Irkutsk,
Italy,
Japan,
Kansas,
Kazakhstan,
Khabarovsk,
Kirgizstan,
Korea,
Krasnoyarsk,
Krym,
Kuril Is.,
Labrador,
Maine,
Manchuria,
Manitoba,
Massachusetts,
Mexico Northeast,
Mexico Northwest,
Michigan,
Minnesota,
Mongolia,
Montana,
Nebraska,
Nepal,
Netherlands,
Nevada,
New Brunswick,
New Hampshire,
New Jersey,
New Mexico,
New York,
Newfoundland,
North Caucasus,
North Dakota,
North European Russi,
Northwest European R,
Northwest Territorie,
Norway,
Nova Scotia,
Nunavut,
Ohio,
Ontario,
Oregon,
Pakistan,
Pennsylvania,
Poland,
Portugal,
Primorye,
Prince Edward I.,
Qinghai,
Québec,
Rhode I.,
Romania,
Sakhalin,
Saskatchewan,
South Dakota,
South European Russi,
Spain,
Sweden,
Tadzhikistan,
Texas,
Tibet,
Transcaucasus,
Tunisia,
Turkey,
Ukraine,
Utah,
Vermont,
Washington,
West Himalaya,
West Siberia,
Wisconsin,
Wyoming,
Xinjiang,
Yakutskiya,
Yugoslavia,
Yukon