Native to:
Alaska,
Alberta,
Altay,
Amur,
Austria,
Baltic States,
Belarus,
Belgium,
British Columbia,
Bulgaria,
California,
Central European Rus,
Connecticut,
Czechoslovakia,
Denmark,
East European Russia,
Finland,
France,
Germany,
Great Britain,
Greece,
Hungary,
Idaho,
Illinois,
Indiana,
Inner Mongolia,
Iowa,
Ireland,
Italy,
Japan,
Kamchatka,
Kazakhstan,
Korea,
Kuril Is.,
Labrador,
Maine,
Manchuria,
Manitoba,
Maryland,
Massachusetts,
Mexico Northwest,
Michigan,
Minnesota,
Mongolia,
Montana,
Netherlands,
New Hampshire,
New Jersey,
New York,
Newfoundland,
North Caucasus,
North European Russi,
Northwest European R,
Northwest Territorie,
Norway,
Nova Scotia,
Ohio,
Ontario,
Pennsylvania,
Poland,
Primorye,
Prince Edward I.,
Québec,
Rhode I.,
Romania,
Sakhalin,
Saskatchewan,
South European Russi,
Spain,
Sweden,
Switzerland,
Transcaucasus,
Ukraine,
Vermont,
Virginia,
Washington,
West Siberia,
Wisconsin,
Yakutskiya,
Yugoslavia