Native to:
Afghanistan,
Albania,
Algeria,
Altay,
Amur,
Argentina Northeast,
Austria,
Baleares,
Baltic States,
Belarus,
Belgium,
Bulgaria,
Buryatiya,
Canary Is.,
Central European Rus,
China North-Central,
China South-Central,
China Southeast,
Corse,
Cyprus,
Czechoslovakia,
Denmark,
East Aegean Is.,
East European Russia,
Ethiopia,
Finland,
France,
Germany,
Great Britain,
Greece,
Hungary,
Inner Mongolia,
Iran,
Iraq,
Ireland,
Irkutsk,
Italy,
Japan,
Kamchatka,
Kazakhstan,
Kenya,
Khabarovsk,
Kirgizstan,
Korea,
Krasnoyarsk,
Kriti,
Krym,
Kuril Is.,
Lebanon-Syria,
Madeira,
Magadan,
Manchuria,
Mongolia,
Morocco,
Nepal,
Netherlands,
North Caucasus,
North European Russi,
Northwest European R,
Norway,
Pakistan,
Palestine,
Poland,
Portugal,
Primorye,
Romania,
Rwanda,
Sakhalin,
Sicilia,
South European Russi,
Spain,
Sweden,
Switzerland,
Tadzhikistan,
Taiwan,
Tanzania,
Tibet,
Transcaucasus,
Tunisia,
Turkey,
Turkey-in-Europe,
Turkmenistan,
Tuva,
Uganda,
Ukraine,
Uzbekistan,
West Himalaya,
West Siberia,
Xinjiang,
Yakutskiya,
Yemen,
Yugoslavia,
Zaïre
Introduced into:
Alabama,
Argentina Northwest,
Argentina South,
Arizona,
Arkansas,
Bermuda,
British Columbia,
California,
Cameroon,
Cape Provinces,
Chile Central,
Chile South,
Connecticut,
Delaware,
Egypt,
Føroyar,
Georgia,
Greenland,
Iceland,
Idaho,
Illinois,
Indiana,
Laos,
Lesotho,
Libya,
Louisiana,
Maine,
Maryland,
Massachusetts,
Michigan,
Minnesota,
Missouri,
Montana,
Nebraska,
New Brunswick,
New Jersey,
New York,
New Zealand North,
New Zealand South,
Newfoundland,
North Carolina,
Nova Scotia,
Ohio,
Oklahoma,
Ontario,
Oregon,
Pennsylvania,
Québec,
Rhode I.,
South Carolina,
South Georgia,
Tasmania,
Vermont,
Virginia,
Washington,
West Virginia,
Wisconsin,
Wyoming