Tridax

Tridax
Tridax procumbens
Scientific classification
Kingdom:	Plantae
Clade:	Tracheophytes
Clade:	Angiosperms
Clade:	Eudicots
Clade:	Asterids
Order:	Asterales
Family:	Asteraceae
Subfamily:	Asteroideae
Tribe:	Millerieae
Subtribe:	Galinsoginae
Genus:	Tridax L.
Type species
Tridax procumbens L.
Synonyms [1]
PtilostephiumKunth MandoniaWedd. SogalginaCass. BalbisiaWilld. 1803, rejected homonym not Cav. 1804 (Francoaceae) nor DC. 1833 (Asteraceae) BartoliaAdans. BartolinaAdans. CarphostephiumCass. GalinsogeaKunth 1818, illegitimate homonym not Willd. 1803

Tridax is a genus of flowering plants in the family Asteraceae. ^{[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.

Species ^[1]

• 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

References

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