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Classification System: APG IV

Superregnum: Eukaryota
Regnum: Plantae
Cladus: Angiosperms
Cladus: Eudicots
Cladus: Core eudicots
Cladus: Asterids
Cladus: Campanulids
Ordo: Asterales

Familia: Asteraceae
Subfamilia: Asteroideae
Tribus: Millerieae
Subtribus: Dyscritothamninae
Genus: Tridax
Species: T. angustifolia – T. balbisioides – T. bicolor – T. bilabiata – T. boliviensis – T. brachylepis – T. cajamarcensis – T. candidissima – T. coronopifolia – T. dubia – T. durangensis – T. erecta – T. hintonii – T. hintoniorum – T. luisana – T. mexicana – T. moorei – T. oaxacana – T. obovata – T. palmeri – T. paneroi – T. peruviensis – T. petrophila – T. platyphylla – T. procumbens – T. purpurea – T. purpusii – T. rosea – T. serboana – T. stuebelii – T. tenuifolia – T. trilobata – T. yecorana

Tridax L., Sp. Pl. 2: 900. (1753)

Type species: Tridax procumbens L., Sp. Pl. 2: 900. (1753)


Balbisia Willd., Sp. Pl., ed. 4 (Willdenow) 3(3): 2214. (1803), nom. rej. vs. Balbisia Cav.


Linnaeus, C. 1753. Species Plantarum 2: 900.
Hassler, M. 2018. Tridax. World Plants: Synonymic Checklists of the Vascular Plants of the World In: Roskovh, Y., Abucay, L., Orrell, T., Nicolson, D., Bailly, N., Kirk, P., Bourgoin, T., DeWalt, R.E., Decock, W., De Wever, A., Nieukerken, E. van, Zarucchi, J. & Penev, L., eds. 2018. Species 2000 & ITIS Catalogue of Life. Published on the internet. Accessed: 2018 Jan. 29. Reference page.
International Plant Names Index. 2018. Tridax. Published online. Accessed: Jan. 29 2018. 2018. Tridax. Missouri Botanical Garden. Published on the internet. Accessed: 2018 Jan. 29.

Tridax is a genus of flowering plants in the daisy family.[2][3]

Tridax is native primarily to the tropical regions of North and South America. Tridax procumbens has become naturalized in the southern United States and is considered a noxious weed in some places. Tridax procumbens The pollen grains of Tridax
The pollen grains of Tridax

Tridax procumbens


Tridax angustifolia Spruce ex Benth. & Hook.f. - Ecuador, Peru
Tridax balbisioides (Kunth) A.Gray - Guanajuato
Tridax bicolor A.Gray - Chihuahua
Tridax bilabiata A.M.Powell - Guerrero
Tridax boliviensis (Wedd.) R.E.Fr. - Bolivia
Tridax brachylepis Hemsl. - Oaxaca
Tridax cajamarcensis H.Rob. - Peru
Tridax candidissima A.Gray - San Luis Potosí
Tridax coronopifolia (Kunth) Hemsl. - widespread from Tamaulipas to Chiapas
Tridax dubia Rose - Colima
Tridax erecta A.Gray
Tridax hintonii (B.L.Turner & A.M.Powell) D.J.Keil, Luckow & Pinkava - Michoacán
Tridax hintoniorum B.L.Turner - Nuevo León
Tridax luisana Brandegee - Puebla, Oaxaca
Tridax mexicana A.M.Powell - Guerrero, Oaxaca, Jalisco, México State, Veracruz, Nayarit, Michoacán
Tridax moorei B.L.Rob. - Hidalgo
Tridax oaxacana B.L.Turner - Oaxaca
Tridax obovata Turcz. - Oaxaca
Tridax oligantha C.E.Anderson & Beaman
Tridax palmeri A.Gray - San Luis Potosí
Tridax platyphylla B.L.Rob. - Jalisco
Tridax procumbens (L.) L. - Veracruz; widespread invasive
Tridax purpurea S.F.Blake - Guatemala, Chiapas
Tridax rosea Sch.Bip. ex B.L.Rob. & Greenm. - Hidalgo, D.F.
Tridax tambensis Hieron. - Peru, Ecuador
Tridax tenuifolia Rose - Chihuahua
Tridax trilobata (Cav.) Hemsl. - Michoacán, México State
Tridax venezuelensis Aristeg. & Cuatrec. - Venezuela
Tridax yecorana B.L.Turner - eastern Sonora in Sierra Madre Occidental

formerly included[1]

see Calea Layia Sabazia

Tridax accedens - Calea verticillata
Tridax ehrenbergii - Sabazia sarmentosa
Tridax gaillardioides - Layia gaillardioides
Tridax verticillata - Calea verticillata


Flann, C (ed) 2009+ Global Compositae Checklist
Linnaeus, Carl von. 1753. Species Plantarum 2: 900 in Latin
Tropicos, Tridax L.

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