Native to:
Albania,
Algeria,
Altay,
Austria,
Azores,
Baltic States,
Belarus,
Belgium,
British Columbia,
Bulgaria,
California,
Canary Is.,
Central European Rus,
China South-Central,
China Southeast,
Connecticut,
Corse,
Cyprus,
Czechoslovakia,
Delaware,
Denmark,
East European Russia,
East Himalaya,
Ethiopia,
Finland,
France,
Germany,
Great Britain,
Greece,
Hungary,
Indiana,
Iran,
Ireland,
Italy,
Kazakhstan,
Kirgizstan,
Kriti,
Krym,
Lebanon-Syria,
Libya,
Madeira,
Maine,
Manitoba,
Maryland,
Massachusetts,
Michigan,
Minnesota,
Missouri,
Montana,
Morocco,
Nepal,
Netherlands,
New Brunswick,
New Hampshire,
New Jersey,
Newfoundland,
North Caucasus,
North European Russi,
Northwest European R,
Norway,
Nova Scotia,
Ohio,
Ontario,
Oregon,
Pakistan,
Pennsylvania,
Poland,
Portugal,
Prince Edward I.,
Québec,
Rhode I.,
Romania,
Sardegna,
Saudi Arabia,
Sicilia,
South European Russi,
Spain,
Sweden,
Switzerland,
Tadzhikistan,
Tibet,
Transcaucasus,
Tunisia,
Turkey-in-Europe,
Turkmenistan,
Ukraine,
Uzbekistan,
Vermont,
Virginia,
Washington,
West Himalaya,
West Siberia,
West Virginia,
Wisconsin,
Yemen,
Yugoslavia
Introduced into:
Alaska,
Argentina Northeast,
Argentina Northwest,
Arkansas,
Bermuda,
Bolivia,
Brazil South,
Brazil Southeast,
Chile Central,
Chile South,
Dominican Republic,
Falkland Is.,
Haiti,
Illinois,
Japan,
Juan Fernández Is.,
Kentucky,
Madagascar,
Malaya,
New York,
New Zealand North,
New Zealand South,
Réunion,
Taiwan,
Tennessee,
Uruguay