Native to:
Afghanistan,
Albania,
Algeria,
Altay,
Amur,
Assam,
Austria,
Azores,
Baleares,
Baltic States,
Bangladesh,
Belarus,
Belgium,
Bulgaria,
Buryatiya,
Central European Rus,
China North-Central,
China South-Central,
China Southeast,
Corse,
Cyprus,
Czechoslovakia,
Denmark,
East European Russia,
Finland,
France,
Føroyar,
Germany,
Great Britain,
Greece,
Hungary,
India,
Inner Mongolia,
Iran,
Iraq,
Ireland,
Italy,
Japan,
Kamchatka,
Kazakhstan,
Khabarovsk,
Kirgizstan,
Korea,
Krasnoyarsk,
Krym,
Kuril Is.,
Lebanon-Syria,
Magadan,
Manchuria,
Mongolia,
Nepal,
Netherlands,
North Caucasus,
North European Russi,
Northwest European R,
Norway,
Pakistan,
Palestine,
Poland,
Portugal,
Primorye,
Qinghai,
Romania,
Sakhalin,
Sardegna,
Sicilia,
Sinai,
South European Russi,
Spain,
Sweden,
Switzerland,
Tadzhikistan,
Tibet,
Transcaucasus,
Turkey,
Turkey-in-Europe,
Turkmenistan,
Tuva,
Ukraine,
Uzbekistan,
West Himalaya,
West Siberia,
Xinjiang,
Yakutskiya,
Yugoslavia
Introduced into:
Alabama,
Alaska,
Alberta,
Argentina Northeast,
Argentina Northwest,
Argentina South,
Arizona,
Arkansas,
British Columbia,
California,
Cape Provinces,
Chatham Is.,
Chile Central,
Chile North,
Chile South,
Colorado,
Connecticut,
Delaware,
District of Columbia,
Falkland Is.,
Georgia,
Greenland,
Iceland,
Idaho,
Illinois,
Indiana,
Iowa,
Kansas,
Kentucky,
Labrador,
Maine,
Manitoba,
Maryland,
Massachusetts,
Michigan,
Minnesota,
Missouri,
Montana,
Nebraska,
Nevada,
New Brunswick,
New Hampshire,
New Jersey,
New Mexico,
New South Wales,
New York,
New Zealand North,
New Zealand South,
Newfoundland,
North Carolina,
North Dakota,
Northern Provinces,
Northern Territory,
Northwest Territorie,
Nova Scotia,
Nunavut,
Ohio,
Oklahoma,
Ontario,
Oregon,
Paraguay,
Pennsylvania,
Prince Edward I.,
Queensland,
Québec,
Rhode I.,
Saskatchewan,
South Australia,
South Dakota,
Tasmania,
Tennessee,
Texas,
Uruguay,
Utah,
Vermont,
Victoria,
Virginia,
Washington,
West Virginia,
Western Australia,
Wisconsin,
Wyoming,
Yukon