Native to:
Albania,
Altay,
Amur,
Austria,
Baltic States,
Belarus,
Belgium,
Bulgaria,
Buryatiya,
Central European Russia,
China North-Central,
China South-Central,
China Southeast,
Czechoslovakia,
Denmark,
East European Russia,
Ethiopia,
Finland,
France,
Germany,
Great Britain,
Greece,
Hungary,
Inner Mongolia,
Iran,
Ireland,
Irkutsk,
Italy,
Kamchatka,
Kazakhstan,
Kenya,
Khabarovsk,
Kirgizstan,
Korea,
Krasnoyarsk,
Krym,
Kuril Is.,
Magadan,
Manchuria,
Mongolia,
Netherlands,
North Caucasus,
North European Russia,
Northwest European Russia,
Norway,
Poland,
Portugal,
Primorye,
Romania,
Rwanda,
Sakhalin,
South European Russia,
Spain,
Sweden,
Switzerland,
Tanzania,
Transcaucasus,
Turkey,
Tuva,
Uganda,
Ukraine,
West Himalaya,
West Siberia,
Xinjiang,
Yakutskiya,
Yemen,
Yugoslavia,
Zaïre
Introduced into:
British Columbia,
Cape Provinces,
Chile South,
Connecticut,
Føroyar,
Greenland,
Iceland,
Idaho,
Illinois,
Lesotho,
Madeira,
Maine,
Maryland,
Massachusetts,
Michigan,
Minnesota,
New Brunswick,
New Jersey,
New York,
Newfoundland,
North Carolina,
Nova Scotia,
Ohio,
Ontario,
Oregon,
Pennsylvania,
Québec,
Rhode I.,
South Georgia,
Vermont,
Virginia,
Washington,
Wisconsin