Native to:
Italy,
Sicilia
Introduced into:
Algeria,
Assam,
Austria,
Baltic States,
Bangladesh,
Canary Is.,
Central European Rus,
Cyprus,
Czechoslovakia,
Dominican Republic,
East Aegean Is.,
East European Russia,
East Himalaya,
Ecuador,
El Salvador,
France,
Galápagos,
Great Britain,
Guatemala,
Illinois,
India,
Iraq,
Ireland,
Jawa,
Kazakhstan,
Kirgizstan,
Korea,
Krym,
Libya,
Madeira,
Mexico Southwest,
Morocco,
Nepal,
New Guinea,
New Zealand North,
New Zealand South,
North Caucasus,
Northwest European R,
Pakistan,
Peru,
Portugal,
Primorye,
Puerto Rico,
Rwanda,
South Australia,
South European Russi,
Sri Lanka,
Tadzhikistan,
Transcaucasus,
Trinidad-Tobago,
Tunisia,
Turkmenistan,
Ukraine,
Uzbekistan,
Victoria