Native to:
Afghanistan,
Albania,
Austria,
Baltic States,
Belarus,
Belgium,
Bulgaria,
Central European Rus,
China South-Central,
Corse,
Czechoslovakia,
Denmark,
East European Russia,
Finland,
France,
Føroyar,
Germany,
Great Britain,
Greece,
Hungary,
Iceland,
Iran,
Ireland,
Italy,
Kazakhstan,
Kirgizstan,
Korea,
Mongolia,
Netherlands,
North European Russi,
Northwest European R,
Norway,
Pakistan,
Poland,
Portugal,
Romania,
Spain,
Sweden,
Switzerland,
Tadzhikistan,
Tibet,
Turkey,
Ukraine,
West Himalaya,
Xinjiang,
Yugoslavia
Introduced into:
Algeria,
Connecticut,
District of Columbia,
Greenland,
Haiti,
Hawaii,
Jamaica,
Japan,
Kerguelen,
Maine,
Massachusetts,
Michigan,
Minnesota,
New Brunswick,
New Hampshire,
New York,
Newfoundland,
Nova Scotia,
Oregon,
Pennsylvania,
Prince Edward I.,
Québec,
Rhode I.,
South Georgia,
Tennessee,
Vermont,
West Virginia