Native to:
Afghanistan,
Alabama,
Alaska,
Albania,
Alberta,
Aleutian Is.,
Algeria,
Altay,
Amur,
Angola,
Argentina Northeast,
Argentina Northwest,
Argentina South,
Arizona,
Arkansas,
Assam,
Austria,
Azores,
Baleares,
Baltic States,
Bangladesh,
Belarus,
Belgium,
Belize,
Benin,
Bolivia,
Brazil Northeast,
Brazil South,
Brazil Southeast,
Brazil West-Central,
British Columbia,
Bulgaria,
Burkina,
Burundi,
Buryatiya,
California,
Cambodia,
Cameroon,
Canary Is.,
Cape Provinces,
Cape Verde,
Central African Republic,
Central European Russia,
Chad,
Chile Central,
Chile North,
Chile South,
China North-Central,
China South-Central,
China Southeast,
Chita,
Colombia,
Colorado,
Connecticut,
Corse,
Costa Rica,
Cuba,
Cyprus,
Czechoslovakia,
Delaware,
Denmark,
District of Columbia,
Djibouti,
Dominican Republic,
East Aegean Is.,
East European Russia,
East Himalaya,
Ecuador,
Egypt,
El Salvador,
Eritrea,
Ethiopia,
Falkland Is.,
Finland,
Florida,
France,
Free State,
Føroyar,
Georgia,
Germany,
Ghana,
Great Britain,
Greece,
Greenland,
Guatemala,
Guinea,
Guinea-Bissau,
Gulf States,
Hainan,
Hawaii,
Honduras,
Hungary,
Iceland,
Idaho,
Illinois,
India,
Indiana,
Inner Mongolia,
Iowa,
Iran,
Iraq,
Ireland,
Irkutsk,
Italy,
Ivory Coast,
Jamaica,
Japan,
Jawa,
Juan Fernández Is.,
Kamchatka,
Kansas,
Kazakhstan,
Kazan-retto,
Kentucky,
Kenya,
Khabarovsk,
Kirgizstan,
Korea,
Krasnoyarsk,
Kriti,
Krym,
Kuril Is.,
Kuwait,
KwaZulu-Natal,
Labrador,
Laos,
Lebanon-Syria,
Lesotho,
Lesser Sunda Is.,
Libya,
Louisiana,
Madagascar,
Madeira,
Magadan,
Maine,
Malawi,
Malaya,
Mali,
Manchuria,
Manitoba,
Marianas,
Maryland,
Massachusetts,
Mexico Central,
Mexico Gulf,
Mexico Northeast,
Mexico Northwest,
Mexico Southeast,
Mexico Southwest,
Michigan,
Minnesota,
Mississippi,
Missouri,
Mongolia,
Montana,
Morocco,
Mozambique,
Myanmar,
Namibia,
Nansei-shoto,
Nebraska,
Nepal,
Netherlands,
Nevada,
New Brunswick,
New Caledonia,
New Guinea,
New Hampshire,
New Jersey,
New Mexico,
New York,
Newfoundland,
Nicaragua,
Nigeria,
North Carolina,
North Caucasus,
North Dakota,
North European Russia,
Northern Provinces,
Northern Territory,
Northwest European Russia,
Northwest Territories,
Norway,
Nova Scotia,
Nunavut,
Ogasawara-shoto,
Ohio,
Oklahoma,
Oman,
Ontario,
Oregon,
Pakistan,
Palestine,
Panamá,
Paraguay,
Pennsylvania,
Peru,
Philippines,
Poland,
Portugal,
Primorye,
Prince Edward I.,
Qinghai,
Queensland,
Québec,
Rhode I.,
Romania,
Rwanda,
Réunion,
Sakhalin,
Sardegna,
Saskatchewan,
Saudi Arabia,
Selvagens,
Sicilia,
Sierra Leone,
Sinai,
Socotra,
Somalia,
South Carolina,
South Dakota,
South European Russia,
Spain,
Sri Lanka,
Sudan,
Sulawesi,
Sumatera,
Swaziland,
Sweden,
Switzerland,
Tadzhikistan,
Taiwan,
Tanzania,
Tennessee,
Texas,
Thailand,
Tibet,
Togo,
Transcaucasus,
Tubuai Is.,
Tunisia,
Turkey,
Turkey-in-Europe,
Turkmenistan,
Tuva,
Uganda,
Ukraine,
Uruguay,
Utah,
Uzbekistan,
Vanuatu,
Venezuela,
Vermont,
Vietnam,
Virginia,
Washington,
West Himalaya,
West Siberia,
West Virginia,
Western Sahara,
Wisconsin,
Wyoming,
Xinjiang,
Yakutskiya,
Yemen,
Yugoslavia,
Yukon,
Zambia,
Zaïre,
Zimbabwe
Introduced into:
Antipodean Is.,
Ascension,
Bermuda,
Chatham Is.,
Crozet Is.,
Easter Is.,
Haiti,
Kermadec Is.,
Mauritius,
New South Wales,
New Zealand North,
New Zealand South,
Norfolk Is.,
Puerto Rico,
South Australia,
St.Helena,
Tasmania,
Tristan da Cunha,
Victoria,
Western Australia