Native to:
Afghanistan,
Albania,
Algeria,
Altay,
Austria,
Baleares,
Baltic States,
Belarus,
Belgium,
Bulgaria,
Buryatiya,
Central European Rus,
Chad,
China North-Central,
China South-Central,
China Southeast,
Chita,
Corse,
Cyprus,
Czechoslovakia,
Denmark,
East Aegean Is.,
East European Russia,
East Himalaya,
Finland,
France,
Føroyar,
Germany,
Great Britain,
Greece,
Hungary,
Iceland,
India,
Inner Mongolia,
Iran,
Iraq,
Ireland,
Irkutsk,
Italy,
Kazakhstan,
Korea,
Krasnoyarsk,
Kriti,
Krym,
Lebanon-Syria,
Libya,
Madeira,
Manchuria,
Mongolia,
Morocco,
Myanmar,
Nepal,
Netherlands,
North Caucasus,
North European Russi,
Northwest European R,
Norway,
Pakistan,
Palestine,
Poland,
Portugal,
Romania,
Sardegna,
Sicilia,
Sinai,
South European Russi,
Spain,
Sweden,
Switzerland,
Tibet,
Transcaucasus,
Tunisia,
Turkey,
Turkey-in-Europe,
Turkmenistan,
Tuva,
Ukraine,
Uzbekistan,
West Himalaya,
West Siberia,
Xinjiang,
Yakutskiya,
Yugoslavia
Introduced into:
Alabama,
Alaska,
Alberta,
Aleutian Is.,
Amsterdam-St.Paul Is,
Antipodean Is.,
Argentina Northeast,
Argentina Northwest,
Argentina South,
Arizona,
Arkansas,
Azores,
Bolivia,
British Columbia,
California,
Canary Is.,
Chatham Is.,
Chile Central,
Chile North,
Chile South,
Colombia,
Colorado,
Connecticut,
Costa Rica,
Crozet Is.,
Delaware,
District of Columbia,
Easter Is.,
Ecuador,
Falkland Is.,
Florida,
Georgia,
Greenland,
Hawaii,
Idaho,
Illinois,
Indiana,
Iowa,
Jamaica,
Japan,
Jawa,
Kamchatka,
Kansas,
Kentucky,
Kerguelen,
Khabarovsk,
Kuril Is.,
Labrador,
Louisiana,
Macquarie Is.,
Magadan,
Maine,
Manitoba,
Marion-Prince Edward,
Marquesas,
Maryland,
Massachusetts,
Mexico Central,
Mexico Gulf,
Mexico Northeast,
Mexico Northwest,
Mexico Southeast,
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,
New Zealand South,
Newfoundland,
North Carolina,
North Dakota,
Northwest Territorie,
Nova Scotia,
Ohio,
Ontario,
Oregon,
Pennsylvania,
Peru,
Primorye,
Prince Edward I.,
Queensland,
Québec,
Rhode I.,
Réunion,
Sakhalin,
Saskatchewan,
South Carolina,
South Dakota,
Sri Lanka,
Sumatera,
Taiwan,
Tasmania,
Tennessee,
Texas,
Tristan da Cunha,
Uruguay,
Utah,
Venezuela,
Vermont,
Victoria,
Virginia,
Washington,
West Virginia,
Western Australia,
Wisconsin,
Wyoming