Native to:
Albania,
Algeria,
Austria,
Azores,
Baleares,
Baltic States,
Belarus,
Belgium,
Bulgaria,
Canary Is.,
Cape Provinces,
Central European Rus,
Corse,
Czechoslovakia,
Denmark,
East Aegean Is.,
Egypt,
France,
Føroyar,
Germany,
Great Britain,
Greece,
Hungary,
Ireland,
Italy,
Kriti,
Krym,
Lebanon-Syria,
Madeira,
Morocco,
Netherlands,
North Caucasus,
Northwest European R,
Norway,
Palestine,
Poland,
Portugal,
Romania,
Sardegna,
Selvagens,
Sicilia,
South European Russi,
Spain,
Sweden,
Switzerland,
Transcaucasus,
Tunisia,
Turkey,
Turkey-in-Europe,
Ukraine,
Yugoslavia
Extinct in:
Marion-Prince Edward
Introduced into:
Alabama,
Alaska,
Alberta,
Amsterdam-St.Paul Is,
Amur,
Antipodean Is.,
Argentina Northeast,
Argentina South,
Arizona,
Arkansas,
Assam,
Bolivia,
Brazil South,
Brazil Southeast,
British Columbia,
California,
Chatham Is.,
Chile Central,
China South-Central,
China Southeast,
Colombia,
Colorado,
Connecticut,
Costa Rica,
Crozet Is.,
Delaware,
District of Columbia,
Dominican Republic,
East Himalaya,
Ecuador,
Falkland Is.,
Finland,
Georgia,
Haiti,
Hawaii,
Iceland,
Idaho,
Illinois,
Indiana,
Iowa,
Jamaica,
Japan,
Jawa,
Kansas,
Kentucky,
Kerguelen,
Kermadec Is.,
Korea,
Kuril Is.,
KwaZulu-Natal,
Louisiana,
Maine,
Marion-Prince Edward,
Maryland,
Massachusetts,
Mexico Central,
Mexico Gulf,
Mexico Northeast,
Mexico Southeast,
Michigan,
Mississippi,
Missouri,
Montana,
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,
North European Russi,
Northern Provinces,
Nova Scotia,
Ohio,
Oklahoma,
Ontario,
Oregon,
Panamá,
Pennsylvania,
Peru,
Puerto Rico,
Queensland,
Québec,
Rhode I.,
Réunion,
Saskatchewan,
South Australia,
South Carolina,
Sri Lanka,
St.Helena,
Taiwan,
Tasmania,
Tennessee,
Texas,
Tristan da Cunha,
Uruguay,
Utah,
Venezuela,
Vermont,
Victoria,
Virginia,
Washington,
West Virginia,
Western Australia,
Wisconsin