Native to:
North Caucasus,
Transcaucasus
Introduced into:
Afghanistan,
Alabama,
Alaska,
Alberta,
Aleutian Is.,
Algeria,
Altay,
Amur,
Andaman Is.,
Angola,
Argentina Northeast,
Argentina Northwest,
Arizona,
Arkansas,
Assam,
Austria,
Bahamas,
Baltic States,
Bangladesh,
Belarus,
Belgium,
Belize,
Bermuda,
Bolivia,
Borneo,
Botswana,
Brazil South,
Brazil Southeast,
Brazil West-Central,
British Columbia,
Bulgaria,
Buryatiya,
California,
Cambodia,
Cape Provinces,
Caroline Is.,
Central African Repu,
Central American Pac,
Central European Rus,
China North-Central,
China South-Central,
China Southeast,
Chita,
Colombia,
Colorado,
Comoros,
Congo,
Connecticut,
Cook Is.,
Costa Rica,
Cuba,
Czechoslovakia,
Delaware,
District of Columbia,
Djibouti,
Dominican Republic,
East European Russia,
East Himalaya,
Egypt,
El Salvador,
Florida,
France,
Free State,
French Guiana,
Gabon,
Georgia,
Gilbert Is.,
Great Britain,
Guatemala,
Guinea,
Gulf of Guinea Is.,
Haiti,
Hawaii,
Hungary,
Idaho,
Illinois,
India,
Indiana,
Iowa,
Iran,
Iraq,
Irkutsk,
Ivory Coast,
Jamaica,
Japan,
Jawa,
Kansas,
Kazakhstan,
Kentucky,
Kenya,
Khabarovsk,
Kirgizstan,
Korea,
Krasnoyarsk,
Krym,
Kuril Is.,
Kuwait,
KwaZulu-Natal,
Leeward Is.,
Libya,
Louisiana,
Maine,
Malawi,
Malaya,
Maluku,
Manitoba,
Marianas,
Maryland,
Massachusetts,
Mauritania,
Mauritius,
Mexico Central,
Mexico Northwest,
Michigan,
Minnesota,
Mississippi,
Missouri,
Montana,
Mozambique,
Nebraska,
Nepal,
Nevada,
New Brunswick,
New Caledonia,
New Guinea,
New Hampshire,
New Jersey,
New Mexico,
New South Wales,
New York,
New Zealand North,
Newfoundland,
Nicaragua,
Nicobar Is.,
Niue,
Norfolk Is.,
North Carolina,
North Dakota,
North European Russi,
Northern Provinces,
Northwest European R,
Northwest Territorie,
Norway,
Nova Scotia,
Ohio,
Oklahoma,
Oman,
Ontario,
Oregon,
Pakistan,
Paraguay,
Pennsylvania,
Peru,
Philippines,
Portugal,
Primorye,
Prince Edward I.,
Queensland,
Québec,
Rhode I.,
Rodrigues,
Romania,
Rwanda,
Réunion,
Sakhalin,
Saskatchewan,
Saudi Arabia,
Sierra Leone,
Society Is.,
South Australia,
South Carolina,
South Dakota,
South European Russi,
Spain,
Sri Lanka,
Sulawesi,
Sweden,
Tadzhikistan,
Taiwan,
Tanzania,
Tennessee,
Texas,
Trinidad-Tobago,
Tunisia,
Turkmenistan,
Tuva,
Ukraine,
Utah,
Uzbekistan,
Vanuatu,
Venezuela,
Vermont,
Vietnam,
Virginia,
Washington,
West Himalaya,
West Siberia,
West Virginia,
Western Australia,
Windward Is.,
Wisconsin,
Wyoming,
Yakutskiya,
Yemen,
Zaïre,
Zimbabwe