''Tridax'' is a

genus Genus ( plural genera ) is a taxonomic rank used in the biological classification of extant taxon, living and fossil organisms as well as Virus classification#ICTV classification, viruses. In the hierarchy of biological classification, genus com ...

of flowering plants in the family

Asteraceae The family Asteraceae, alternatively Compositae, consists of over 32,000 known species of flowering plants in over 1,900 genera within the order Asterales. Commonly referred to as the aster, daisy, composite, or sunflower family, Compositae w ...

.Tropicos, ''Tridax'' L.
/ref> ''Tridax'' is native primarily to the tropical regions of

North North is one of the four compass points or cardinal directions. It is the opposite of south and is perpendicular to east and west. ''North'' is a noun, adjective, or adverb indicating Direction (geometry), direction or geography. Etymology T ...

and

South America South America is a continent entirely in the Western Hemisphere and mostly in the Southern Hemisphere, with a relatively small portion in the Northern Hemisphere at the northern tip of the continent. It can also be described as the southe ...

. ''

Tridax procumbens ''Tridax procumbens'', commonly known as coatbuttons or tridax daisy, is a species of flowering plant in the family Asteraceae. It is best known as a widespread weed and pest plant. It is native to the tropical Americas including Mexico, but it ...

'' has become naturalized in the southern United States and is considered a noxious weed in some places. ; SpeciesFlann, C (ed) 2009+ Global Compositae Checklist
/ref> ; formerly included see '' Calea

Layia ''Layia'' is a genus of flowering plants in the family Asteraceae known generally as tidy tips, native to western North America. Several are California Endemism, endemics. These are erect daisylike annual herbs with dark glandular stems. The He ...

Sabazia ''Sabazia'' is a genus of Colombian and Mesoamerican plants in the tribe Millerieae within the family Asteraceae. ; Species * '' Sabazia acoma'' (S.F.Blake) Longpre - Colombia * '' Sabazia densa'' Longpre - Costa Rica * '' Sabazia durangensis'' ( ...

'' * ''Tridax accedens -

Calea verticillata CALEA may refer to: *Communications Assistance for Law Enforcement Act, an act by the US Congress to facilitate wiretapping of U.S. domestic telephone and Internet traffic *Commission on Accreditation for Law Enforcement Agencies, a private accredit ...

'' * ''Tridax ehrenbergii -

Sabazia sarmentosa ''Sabazia'' is a genus of Colombian and Mesoamerican plants in the tribe Millerieae within the family Asteraceae. ; Species * ''Sabazia acoma'' (S.F.Blake) Longpre - Colombia * ''Sabazia densa'' Longpre - Costa Rica * ''Sabazia durangensis'' (Lon ...

'' * ''Tridax gaillardioides -

Layia gaillardioides ''Layia gaillardioides'' is a species of flowering plant in the family Asteraceae known by the common name woodland tidytips. It is Endemism, endemic to California, where it grows on the coastline and in the coastal mountain ranges in the northe ...

'' * ''Tridax verticillata -

References

Millerieae Asteraceae genera Taxa named by Carl Linnaeus {{Millerieae-stub