Native to:
Greece,
Italy,
Sicilia,
Yugoslavia
Introduced into:
Alabama,
Alaska,
Algeria,
Altay,
Andaman Is.,
Angola,
Argentina Northeast,
Argentina Northwest,
Argentina South,
Arizona,
Arkansas,
Assam,
Baleares,
Baltic States,
Bangladesh,
Belarus,
Belgium,
Bermuda,
Bolivia,
Brazil South,
Brazil Southeast,
British Columbia,
Bulgaria,
California,
Canary Is.,
Caroline Is.,
Central European Russia,
Chile Central,
Chile North,
Chile South,
China North-Central,
China South-Central,
China Southeast,
Colombia,
Colorado,
Connecticut,
Corse,
Costa Rica,
Cuba,
Cyprus,
Delaware,
District of Columbia,
Dominican Republic,
East Aegean Is.,
East European Russia,
East Himalaya,
Ecuador,
Egypt,
El Salvador,
Eritrea,
Ethiopia,
Fiji,
Florida,
Galápagos,
Georgia,
Germany,
Gilbert Is.,
Great Britain,
Guatemala,
Gulf of Guinea Is.,
Gulf States,
Hainan,
Haiti,
Hawaii,
Idaho,
Illinois,
India,
Indiana,
Inner Mongolia,
Iowa,
Iraq,
Ireland,
Japan,
Jawa,
Kansas,
Kazakhstan,
Kazan-retto,
Kenya,
Korea,
Kriti,
Krym,
Kuwait,
Labrador,
Lebanon-Syria,
Leeward Is.,
Libya,
Louisiana,
Madeira,
Maine,
Manchuria,
Manitoba,
Marianas,
Marshall Is.,
Maryland,
Massachusetts,
Mauritania,
Mexican Pacific Is.,
Mexico Northwest,
Michigan,
Minnesota,
Mississippi,
Missouri,
Montana,
Morocco,
Nansei-shoto,
Nebraska,
Nepal,
Nevada,
New Brunswick,
New Caledonia,
New Hampshire,
New Jersey,
New Mexico,
New South Wales,
New York,
Newfoundland,
Nicobar Is.,
North Carolina,
North Dakota,
North European Russia,
Northern Provinces,
Nova Scotia,
Ohio,
Oklahoma,
Oman,
Ontario,
Oregon,
Pakistan,
Palestine,
Paraguay,
Pennsylvania,
Portugal,
Primorye,
Prince Edward I.,
Puerto Rico,
Qinghai,
Queensland,
Québec,
Rhode I.,
Rwanda,
Sardegna,
Saskatchewan,
Saudi Arabia,
South Australia,
South Carolina,
South Dakota,
South European Russia,
Spain,
Sri Lanka,
Sudan,
Sumatera,
Switzerland,
Tadzhikistan,
Tanzania,
Tasmania,
Texas,
Tibet,
Tunisia,
Turkey,
Turkey-in-Europe,
Turkmenistan,
Ukraine,
Uruguay,
Utah,
Uzbekistan,
Victoria,
Vietnam,
Virginia,
Wake I.,
Washington,
West Himalaya,
West Virginia,
Western Australia,
Windward Is.,
Wisconsin,
Wyoming,
Xinjiang,
Yemen,
Zimbabwe