Native to:
Albania,
Algeria,
Altay,
Assam,
Austria,
Azores,
Baleares,
Baltic States,
Bangladesh,
Belarus,
Belgium,
Bulgaria,
Buryatiya,
Canary Is.,
Cape Provinces,
Cape Verde,
Central European Russia,
Chad,
China North-Central,
China South-Central,
China Southeast,
Chita,
Corse,
Cyprus,
Czechoslovakia,
Denmark,
Djibouti,
East Aegean Is.,
East European Russia,
East Himalaya,
Egypt,
Eritrea,
Ethiopia,
Finland,
France,
Free State,
Germany,
Great Britain,
Greece,
Hungary,
Iceland,
India,
Inner Mongolia,
Iran,
Iraq,
Ireland,
Irkutsk,
Italy,
Kazakhstan,
Kenya,
Kirgizstan,
Krasnoyarsk,
Kriti,
Krym,
KwaZulu-Natal,
Lebanon-Syria,
Lesotho,
Libya,
Madeira,
Manchuria,
Mongolia,
Morocco,
Myanmar,
Namibia,
Nepal,
Netherlands,
North Caucasus,
North European Russia,
Northern Provinces,
Northwest European Russia,
Norway,
Pakistan,
Palestine,
Poland,
Portugal,
Qinghai,
Romania,
Rwanda,
Sardegna,
Saudi Arabia,
Sicilia,
Somalia,
South European Russia,
Spain,
Sudan,
Swaziland,
Sweden,
Switzerland,
Tadzhikistan,
Tanzania,
Tibet,
Transcaucasus,
Tunisia,
Turkey,
Turkey-in-Europe,
Turkmenistan,
Tuva,
Uganda,
Ukraine,
Uzbekistan,
West Himalaya,
West Siberia,
Xinjiang,
Yakutskiya,
Yemen,
Yugoslavia,
Zambia,
Zaïre,
Zimbabwe
Introduced into:
Alabama,
Alberta,
Argentina Northeast,
Argentina Northwest,
Argentina South,
Arizona,
Bolivia,
Brazil South,
Brazil Southeast,
British Columbia,
California,
Chile Central,
Chile North,
Chile South,
Colorado,
Connecticut,
Delaware,
District of Columbia,
Florida,
Georgia,
Illinois,
Indiana,
Iowa,
Japan,
Juan Fernández Is.,
Kansas,
Kentucky,
Korea,
Maine,
Maryland,
Mauritius,
Mexico Northwest,
Michigan,
Missouri,
Montana,
Nebraska,
Nevada,
New Jersey,
New Mexico,
New York,
New Zealand North,
North Carolina,
North Dakota,
Ohio,
Oklahoma,
Ontario,
Oregon,
Pennsylvania,
Peru,
Primorye,
Rhode I.,
South Dakota,
St.Helena,
Tennessee,
Texas,
Uruguay,
Utah,
Vermont,
Virginia,
Washington,
West Virginia,
Wisconsin,
Wyoming