Native to:
Alaska,
Albania,
Alberta,
Altay,
Amur,
Arizona,
Austria,
Baltic States,
Belarus,
Belgium,
British Columbia,
Bulgaria,
Buryatiya,
California,
Central European Rus,
China North-Central,
China South-Central,
Chita,
Colorado,
Connecticut,
Corse,
Czechoslovakia,
Denmark,
East European Russia,
Finland,
France,
Germany,
Great Britain,
Greece,
Hungary,
Idaho,
Irkutsk,
Italy,
Japan,
Kamchatka,
Kazakhstan,
Khabarovsk,
Kirgizstan,
Korea,
Krasnoyarsk,
Krym,
Kuril Is.,
Labrador,
Maine,
Manchuria,
Manitoba,
Massachusetts,
Michigan,
Minnesota,
Mongolia,
Montana,
Netherlands,
Nevada,
New Brunswick,
New Hampshire,
New Mexico,
New York,
Newfoundland,
North Caucasus,
North European Russi,
Northwest European R,
Northwest Territorie,
Norway,
Nova Scotia,
Nunavut,
Ohio,
Ontario,
Oregon,
Poland,
Primorye,
Prince Edward I.,
Québec,
Rhode I.,
Romania,
Sakhalin,
Saskatchewan,
South Dakota,
South European Russi,
Spain,
Sweden,
Switzerland,
Taiwan,
Transcaucasus,
Turkey,
Tuva,
Ukraine,
Utah,
Vermont,
Washington,
West Himalaya,
West Siberia,
Wisconsin,
Wyoming,
Xinjiang,
Yakutskiya,
Yugoslavia,
Yukon