Native to:
Afghanistan,
Alabama,
Alaska,
Albania,
Alberta,
Aleutian Is.,
Algeria,
Altay,
Amur,
Argentina Northeast,
Argentina Northwest,
Arizona,
Arkansas,
Assam,
Austria,
Baltic States,
Belarus,
Belgium,
Bolivia,
British Columbia,
Bulgaria,
Burundi,
Buryatiya,
California,
Cameroon,
Cape Provinces,
Central European Russia,
China North-Central,
China South-Central,
China Southeast,
Chita,
Colombia,
Colorado,
Connecticut,
Corse,
Costa Rica,
Czechoslovakia,
Delaware,
Denmark,
District of Columbia,
East Aegean Is.,
East European Russia,
East Himalaya,
Ecuador,
El Salvador,
Ethiopia,
Finland,
Florida,
France,
Free State,
Føroyar,
Georgia,
Germany,
Great Britain,
Greece,
Greenland,
Guatemala,
Gulf of Guinea Is.,
Hainan,
Haiti,
Honduras,
Hungary,
Iceland,
Idaho,
Illinois,
India,
Indiana,
Inner Mongolia,
Iowa,
Iran,
Iraq,
Ireland,
Irkutsk,
Italy,
Japan,
Jawa,
Kamchatka,
Kansas,
Kazakhstan,
Kentucky,
Kenya,
Khabarovsk,
Kirgizstan,
Korea,
Krasnoyarsk,
Krym,
Kuril Is.,
KwaZulu-Natal,
Labrador,
Lebanon-Syria,
Lesotho,
Lesser Sunda Is.,
Louisiana,
Magadan,
Maine,
Malawi,
Manchuria,
Manitoba,
Maryland,
Massachusetts,
Mexico Central,
Mexico Gulf,
Mexico Northeast,
Mexico Northwest,
Mexico Southeast,
Mexico Southwest,
Michigan,
Minnesota,
Mississippi,
Missouri,
Mongolia,
Montana,
Morocco,
Mozambique,
Myanmar,
Nansei-shoto,
Nebraska,
Nepal,
Netherlands,
Nevada,
New Brunswick,
New Guinea,
New Hampshire,
New Jersey,
New Mexico,
New York,
Newfoundland,
Nicaragua,
North Carolina,
North Caucasus,
North Dakota,
North European Russia,
Northern Provinces,
Northwest European Russia,
Northwest Territories,
Norway,
Nova Scotia,
Nunavut,
Ohio,
Oklahoma,
Ontario,
Oregon,
Pakistan,
Palestine,
Panamá,
Pennsylvania,
Peru,
Philippines,
Poland,
Portugal,
Primorye,
Prince Edward I.,
Qinghai,
Québec,
Rhode I.,
Romania,
Rwanda,
Sakhalin,
Sardegna,
Saskatchewan,
Sicilia,
South Carolina,
South Dakota,
South European Russia,
Spain,
Sri Lanka,
Sudan,
Sweden,
Switzerland,
Tadzhikistan,
Taiwan,
Tanzania,
Tennessee,
Texas,
Thailand,
Tibet,
Transcaucasus,
Turkey,
Turkey-in-Europe,
Turkmenistan,
Tuva,
Uganda,
Ukraine,
Utah,
Uzbekistan,
Venezuela,
Vermont,
Vietnam,
Virginia,
Washington,
West Himalaya,
West Siberia,
West Virginia,
Wisconsin,
Wyoming,
Xinjiang,
Yakutskiya,
Yemen,
Yugoslavia,
Yukon,
Zambia,
Zaïre,
Zimbabwe