Native to:
Albania,
Altay,
Amur,
Austria,
Baltic States,
Belarus,
Belgium,
Bulgaria,
Buryatiya,
Central European Russia,
China North-Central,
China South-Central,
China Southeast,
Chita,
Corse,
Czechia-Slovakia,
Denmark,
East European Russia,
Finland,
France,
Føroyar,
Germany,
Great Britain,
Greece,
Hungary,
Iceland,
Inner Mongolia,
Iran,
Ireland,
Irkutsk,
Italy,
Kamchatka,
Kazakhstan,
Khabarovsk,
Korea,
Krasnoyarsk,
Kuril Is.,
Lebanon-Syria,
Magadan,
Manchuria,
Mongolia,
Nepal,
Netherlands,
North Caucasus,
North European Russia,
Northwest European Russia,
Norway,
NW. Balkan Pen.,
Poland,
Portugal,
Primorye,
Romania,
Sakhalin,
Sardegna,
Sicilia,
South European Russia,
Spain,
Sweden,
Switzerland,
Taiwan,
Transcaucasus,
Tuva,
Ukraine,
West Himalaya,
West Siberia,
Xinjiang,
Yakutiya
Introduced into:
Alabama,
Alaska,
Alberta,
Aleutian Is.,
Amsterdam-St.Paul Is.,
Argentina Northeast,
Argentina Northwest,
Argentina South,
Arizona,
Arkansas,
Bolivia,
Brazil South,
Brazil Southeast,
British Columbia,
California,
Chile Central,
Chile North,
Chile South,
Colombia,
Colorado,
Connecticut,
Crozet Is.,
Delaware,
District of Columbia,
Dominican Republic,
East Himalaya,
Ecuador,
Falkland Is.,
Florida,
Georgia,
Greenland,
Guatemala,
Haiti,
Hawaii,
Idaho,
Illinois,
Indiana,
Iowa,
Jamaica,
Japan,
Juan Fernández Is.,
Kansas,
Kentucky,
Kenya,
Kerguelen,
Labrador,
Louisiana,
Maine,
Manitoba,
Marion-Prince Edward Is.,
Maryland,
Massachusetts,
Mexico Northwest,
Mexico Southwest,
Michigan,
Minnesota,
Mississippi,
Missouri,
Montana,
Nebraska,
Nevada,
New Brunswick,
New Hampshire,
New Jersey,
New Mexico,
New South Wales,
New York,
New Zealand North,
Newfoundland,
North Carolina,
North Dakota,
Nova Scotia,
Ohio,
Oklahoma,
Ontario,
Oregon,
Panamá,
Pennsylvania,
Peru,
Prince Edward I.,
Queensland,
Québec,
Rhode I.,
Saskatchewan,
South Australia,
South Carolina,
South Dakota,
South Georgia,
Sri Lanka,
St.Helena,
Svalbard,
Tasmania,
Tennessee,
Texas,
Uruguay,
Utah,
Venezuela,
Vermont,
Victoria,
Vietnam,
Virginia,
Washington,
West Virginia,
Western Australia,
Wisconsin,
Wyoming,
Yukon