Tridax procumbens, commonly known as coatbuttons[1] 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, but it has been introduced to tropical, subtropical, and mild temperate regions worldwide. It is listed as a noxious weed in the United States and has pest status in nine states.[2]
Its common names include coatbuttons and tridax daisy in English, jayanthi(ಜಯoತಿ) in Kannada, cadillo chisaca in Spanish, herbe caille in French, jayanti veda (जयंती वेद) and "Avanti"[3] in Sanskrit,"Ghajadvu" in Gujarati "Kumminnippacha", (കുമ്മിനിന്നിപാച്ച) "Kurikootticheera",(കുറികോട്ടിച്ചിചിറ) "Muriyampachila" (മുരിയമ്പാചില), "Odiyancheera", (ഒഡിയൻചിറ) "Railpoochedi, (റൈലാപൂച്ചെഡി) "Sanipoovu",(ഷാനിപോവ്) "Thelkuthi", (തെക്കുത്തി) "Chiravanakku", (ചിരവനാക്ക്) in Malayalam, bikhalyakarani in Assamese, ghamra in Hindi, Tridhara (ত্রিধারা) in Bengali, bishalya karani (ବିଶଲ୍ୟକରଣୀ) in Oriya, kambarmodi, Jakhamjudi & tantani (कंबरमोडी, जखमजुडी & टनटनी) in Marathi, gayapaaku (గాయపాకు) & gaddi chemanthi (గడ్డి చామంతి) & balapaaku (బలపాకు) in Telugu,vettukaaya poondu or thatha poo or kinatruppasan (கிணற்றுப்பாசான்) in Tamil, Ghaburi (ઘાબુરી) in Gujarati[4]kotobukigiku in Japanese and tīn túkkæ (ตีนตุ๊กแก; 'gecko feet') in Thai.[5] in Urdu it is known as zagh mai hayat.
Description
Top view of the flower
The plant bears daisylike yellow-centered white or yellow flowers with three-toothed ray florets. The leaves are toothed and generally arrowhead-shaped. Its fruit is a hard achene covered with stiff hairs and having a feathery, plumelike white pappus at one end. Calyx is represented by scales or reduced to pappus. The plant is invasive in part because it produces so many of these achenes, up to 1500 per plant, and each achene can catch the wind in its pappus and be carried some distance. This plant can be found in fields, meadows, croplands, disturbed areas, lawns, and roadsides in areas with tropical or semi-tropical climates.[citation needed] It is listed in the United States as a Noxious Weed and regulated under the Federal Noxious Weed Act.[citation needed]
Tridax procumbens
Use in traditional medicine
Traditionally, Tridax procumbens has been in use in India for wound healing and as an anticoagulant, antifungal, and insect repellent.[citation needed]Tridax procumbens is also used as treatment for boils, blisters, and cuts by local healers in parts of India.[6]
Chemical constituents
The flavonoid procumbenetin has been isolated from the aerial parts of Tridax procumbens. Other chemical compounds isolated from the plant include alkyl esters, sterols,[7] pentacyclic triterpenes,[7][8] fatty acids,[9] and polysaccharides.[10] Several main active chemical compounds were found to be present. But toxicological knowledge is scarce and more research described to be needed on this plant.[11]
Gallery
Flower bud and leaves of Tridax procumbens
Ripe fruit with winged achenes ready for wind-dispersal.
Residual fruit after achene dispersal.
Crimson Tip Colotis danae in Hyderabad, India. Coat buttons are widely visited by butterflies.
Danaus chrysippus feeding on Tridax procumbens in Bandung West Java, Indonesia.
Exoskeleton of cicada clinging to Tridax procumbens stem.
Flower in Hyderabad, India
Wasp feeding the nectar of Tridax procumbens
Ripe fruit with winged achenes
References
USDA, NRCS (n.d.). "Tridax procumbens". The PLANTS Database (plants.usda.gov). Greensboro, North Carolina: National Plant Data Team. Retrieved 15 December 2015.
Ali, Mohammed; Ravinder, Earla; Ramachandram, Ramidi (2001). "A new flavonoid from the aerial parts of Tridax procumbens". Fitoterapia. 72 (3): 313–5. doi:10.1016/S0367-326X(00)00296-3. PMID11295316.
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