Native to:
Afghanistan,
Albania,
Algeria,
Altay,
Assam,
Austria,
Baltic States,
Belarus,
Belgium,
Bulgaria,
Buryatiya,
Central European Rus,
Corse,
Czechoslovakia,
Denmark,
East Aegean Is.,
East European Russia,
East Himalaya,
Finland,
France,
Føroyar,
Germany,
Great Britain,
Greece,
Hungary,
Iceland,
India,
Iran,
Iraq,
Ireland,
Irkutsk,
Italy,
Kazakhstan,
Kirgizstan,
Krasnoyarsk,
Krym,
Morocco,
Nepal,
Netherlands,
North Caucasus,
North European Russi,
Northwest European R,
Norway,
Pakistan,
Poland,
Portugal,
Qinghai,
Romania,
Sardegna,
Sicilia,
South European Russi,
Spain,
Sweden,
Switzerland,
Tadzhikistan,
Tibet,
Transcaucasus,
Tunisia,
Turkey,
Turkey-in-Europe,
Turkmenistan,
Tuva,
Ukraine,
Uzbekistan,
West Himalaya,
West Siberia,
Xinjiang,
Yugoslavia
Introduced into:
Alabama,
Alaska,
Argentina Northeast,
Bolivia,
Brazil Northeast,
Brazil South,
Brazil Southeast,
British Columbia,
California,
Cape Provinces,
Chile Central,
Chile South,
Colombia,
Connecticut,
Delaware,
District of Columbia,
Ecuador,
Eritrea,
Falkland Is.,
Florida,
Georgia,
Greenland,
Guatemala,
Khabarovsk,
Libya,
Maine,
Maryland,
Massachusetts,
Mexico Central,
Mexico Northeast,
Michigan,
Missouri,
New Brunswick,
New Hampshire,
New Jersey,
New York,
New Zealand North,
New Zealand South,
Newfoundland,
North Carolina,
Nova Scotia,
Ohio,
Oklahoma,
Ontario,
Oregon,
Pennsylvania,
Primorye,
Prince Edward I.,
Québec,
Svalbard,
Tennessee,
Tristan da Cunha,
Virginia,
Washington,
West Virginia,
Yakutskiya