Native to:
Afghanistan,
Albania,
Altay,
Amur,
Austria,
Baleares,
Baltic States,
Belarus,
Belgium,
Bulgaria,
Buryatiya,
Central European Rus,
China North-Central,
China South-Central,
China Southeast,
Chita,
Corse,
Czechoslovakia,
Denmark,
East European Russia,
Finland,
France,
Føroyar,
Germany,
Great Britain,
Hungary,
Iceland,
Inner Mongolia,
Iran,
Ireland,
Irkutsk,
Italy,
Japan,
Kazakhstan,
Khabarovsk,
Kirgizstan,
Korea,
Krasnoyarsk,
Krym,
Manchuria,
Mongolia,
Morocco,
Nansei-shoto,
Nepal,
Netherlands,
North Caucasus,
North European Russi,
Northwest European R,
Norway,
Pakistan,
Poland,
Portugal,
Primorye,
Qinghai,
Romania,
Sardegna,
Sicilia,
South European Russi,
Spain,
Sweden,
Switzerland,
Tadzhikistan,
Taiwan,
Tibet,
Transcaucasus,
Turkey-in-Europe,
Tuva,
Ukraine,
Uzbekistan,
West Himalaya,
West Siberia,
Xinjiang,
Yugoslavia
Introduced into:
Alaska,
Alberta,
Aleutian Is.,
Argentina Northeast,
Argentina South,
British Columbia,
Chad,
Chile South,
Connecticut,
Haiti,
Labrador,
Maine,
Manitoba,
Massachusetts,
Michigan,
Minnesota,
New Brunswick,
New Hampshire,
New York,
Newfoundland,
Nova Scotia,
Ontario,
Oregon,
Pennsylvania,
Québec,
Saskatchewan,
Svalbard,
Vermont,
Wisconsin