Native to:
Afghanistan,
Albania,
Algeria,
Altay,
Austria,
Azores,
Baleares,
Baltic States,
Belarus,
Belgium,
Bulgaria,
Buryatiya,
Central European Russia,
Corse,
Czechoslovakia,
Denmark,
East Aegean Is.,
East European Russia,
East Himalaya,
Egypt,
Ethiopia,
Finland,
France,
Føroyar,
Germany,
Great Britain,
Greece,
Hungary,
Iceland,
India,
Iran,
Iraq,
Ireland,
Irkutsk,
Italy,
Kazakhstan,
Kenya,
Kirgizstan,
Krasnoyarsk,
Kriti,
Krym,
Lebanon-Syria,
Madeira,
Mongolia,
Morocco,
Nepal,
Netherlands,
North Caucasus,
North European Russia,
Northwest European Russia,
Norway,
Pakistan,
Palestine,
Poland,
Portugal,
Romania,
Sardegna,
Sicilia,
South European Russia,
Spain,
Sweden,
Switzerland,
Tadzhikistan,
Tanzania,
Transcaucasus,
Tunisia,
Turkey,
Turkey-in-Europe,
Turkmenistan,
Tuva,
Ukraine,
Uzbekistan,
West Himalaya,
West Siberia,
Yugoslavia,
Zimbabwe
Introduced into:
Alabama,
Alaska,
Alberta,
Aleutian Is.,
Amsterdam-St.Paul Is.,
Amur,
Antipodean Is.,
Argentina Northeast,
Argentina Northwest,
Argentina South,
Arizona,
Arkansas,
Bahamas,
Bangladesh,
Bermuda,
Bolivia,
Brazil South,
British Columbia,
California,
Canary Is.,
Cape Provinces,
Chatham Is.,
Chile Central,
Chile North,
Chita,
Colombia,
Colorado,
Costa Rica,
Crozet Is.,
Cuba,
Delaware,
District of Columbia,
Dominican Republic,
Easter Is.,
Ecuador,
Falkland Is.,
Fiji,
Florida,
Free State,
Georgia,
Greenland,
Guatemala,
Haiti,
Hawaii,
Honduras,
Idaho,
Illinois,
Indiana,
Inner Mongolia,
Iowa,
Jamaica,
Japan,
Jawa,
Juan Fernández Is.,
Kamchatka,
Kansas,
Kentucky,
Kerguelen,
Kermadec Is.,
Khabarovsk,
Korea,
Kuril Is.,
KwaZulu-Natal,
Labrador,
Louisiana,
Magadan,
Maine,
Manitoba,
Maryland,
Massachusetts,
Mexico Southwest,
Michigan,
Minnesota,
Mississippi,
Missouri,
Montana,
Nansei-shoto,
Nebraska,
Nevada,
New Brunswick,
New Guinea,
New Hampshire,
New Jersey,
New Mexico,
New South Wales,
New York,
New Zealand North,
New Zealand South,
Newfoundland,
Nicaragua,
Norfolk Is.,
North Carolina,
North Dakota,
Northern Provinces,
Northwest Territories,
Nova Scotia,
Ohio,
Oklahoma,
Ontario,
Oregon,
Panamá,
Pennsylvania,
Peru,
Primorye,
Prince Edward I.,
Queensland,
Québec,
Rhode I.,
Réunion,
Sakhalin,
Saskatchewan,
South Carolina,
South Dakota,
South Georgia,
Sri Lanka,
St.Helena,
Tasmania,
Tennessee,
Texas,
Tristan da Cunha,
Uruguay,
Utah,
Venezuela,
Vermont,
Victoria,
Virginia,
Washington,
West Virginia,
Western Australia,
Wisconsin,
Wyoming,
Yakutskiya,
Yukon