Native to:
Alaska,
Alberta,
Aleutian Is.,
Altay,
Amur,
Arizona,
Austria,
Baltic States,
Belarus,
Belgium,
British Columbia,
Bulgaria,
Buryatiya,
California,
Central European Rus,
China North-Central,
Chita,
Colorado,
Czechoslovakia,
Denmark,
East European Russia,
Finland,
France,
Germany,
Great Britain,
Greenland,
Hungary,
Iceland,
Idaho,
Inner Mongolia,
Ireland,
Irkutsk,
Italy,
Japan,
Kazakhstan,
Khabarovsk,
Krasnoyarsk,
Krym,
Labrador,
Magadan,
Maine,
Manchuria,
Manitoba,
Mexico Central,
Mexico Gulf,
Mexico Northeast,
Mexico Northwest,
Mexico Southwest,
Minnesota,
Mongolia,
Montana,
Netherlands,
Nevada,
New Brunswick,
New Mexico,
Newfoundland,
North Dakota,
North European Russi,
Northwest European R,
Northwest Territorie,
Norway,
Nova Scotia,
Nunavut,
Ontario,
Oregon,
Poland,
Québec,
Romania,
Saskatchewan,
South Dakota,
South European Russi,
Sweden,
Switzerland,
Transcaucasus,
Tuva,
Ukraine,
Utah,
Vermont,
Washington,
West Siberia,
Wyoming,
Yakutskiya,
Yugoslavia,
Yukon