Pacific Island Ecosystems at Risk (PIER)

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Tridax procumbens
L., Asteraceae
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Present on Pacific Islands?  yes

Primarily a threat at high elevations?  no

Risk assessment results:  High Risk (Go to the risk assessment) (PDF format).

Common name(s): [more details]

English: coat buttons, tridax daisy, wild daisy

Fijian: tubua leka, tumbualeka, voti

French: herbe caille

Japanese: kotobukigiku

Spanish: cadillo chisaca, flor amarilla, hierba del toro, panquica, rosilla

Habit:  herb

Description:  "A semi-prostrate perennial herb; taproot slender, wavy with many lateral branches; stems more or less ascending, 30 to 50 cm high, branched, round, sparsely to very hairy; leaves simple, opposite, lanceolate to ovate, 3 to 7 cm long, 1 to 4 cm wide, with irregularly toothed margins; base wedge-shaped, shortly-petioled, hairy on both surfaces; inflorescence a terminal involucrate flower head or capitulum, 1 to 2 cm across, solitary on erect peduncle 10 to 25 cm long; involucre 3-seriate, ovate, acute to shortly acuminate, 5 to 6 mm long; receptacle with oblong, hairy scales; ray flowers 3-dentate, few, pale yellow; disk flowers 5-dentate, tubular, yellow to brownish-yellow, with recurved hairy segments; fruit a black achene covered with fine, pale hairs giving a grayish-brown appearance, 2 mm long, 1 mm wide at apex, base narrow; pappus in one row of wide scales, unequal in length, 5 to 6 mm long.  The 3-seriate and hairy involucre, the 3-dentate pale yellow ray flowers, opposite leaves with toothed margins, and semi-prostrate habit are the distinguishing features of this species"  (Holm et al., 1997; p. 864).

"Pubescent herb with prostrate ascending stems and erect peduncles with terminal heads; leaves opposite, broadly lanceolate, coarsely toothed, acute or subacute, cuneate at base, hispid on both surfaces, 1-5 cm long, 1-3.5 cm wide, on petioles 5-15 mm long; peduncle pilose, 10-30 cm long, erect; head about 1 cm long, 2 cm wide; bracts of involucre 3-seriate, puberulent; ray-florets few (about 6), with white ligule about 4-5 mm long; disc-florets yellow; achenes pilose, 2 mm long; pappus 5-6 mm long"  (Stone, 1970; p. 586).

Habitat/ecology:  "Occurs throughout the tropical and subtropical belt of the world and is frequently found in annual crops, roadsides, pastures, fallow land and waste areas, and occasionally in lawns, perennial crops and nurseries.  It is particularly well adapted to coarse-textured soils of tropical regions and is found from sea level to 1000 m. Its wide distribution and importance as a weed are due to its spreading stems and abundant seed production" (Holm et al., 1997; p. 864).

In Guam, "common in waste ground, especially limestone"  (Stone, 1970; p. 586).  In Hawai‘i, "naturalized and relatively common primarily in low elevation, dry, disturbed habitats" (Wagner et al., 1999; pp. 370-372).  In Fiji, "found in some local abundance at elevations from near sea level to 600 m as a naturalized weed in villages, gardens, and plantations, on grassy hills and open slopes, and along roadsides" (Smith, 1991; pp. 288-289).  In New Guinea, "a weed of gardens, cultivation and pastures; often in short grassland. From near sea level to about 700 m, very common" (Henty & Pritchard, 1975; p. 83). "Occasional in dry, sunny places" (Whistler, 1988; p. 13).  "Abundantly naturalized in the lowlands of central and southern Taiwan, along exposed, dry roadsides, on waste grounds and in lawns"  (Digital Flora of Taiwan).

Propagation:  Seed

Native range:  Tropical America, now a pan-tropical weed (Stone, 1970; p. 586). Mexico, Central America, Venezuela and Colombia to Peru and Bolivia (Wagner et al., 1999; pp. 370-372).

Presence:

Pacific
Country/Terr./St. &
Island group
Location Cited status &
Cited as invasive &
Cited as cultivated &
Cited as aboriginal introduction?
Reference &
Comments
American Samoa
Manu‘a Islands
Ta‘u Island   National Tropical Botanical Garden (U.S.A. Hawaii. Kalaheo.) (1990) (voucher ID: PTBG 10470)
Taxon name on voucher: Tridax procumbens
American Samoa
Tutuila Islands
Tutuila Island   Swarbrick, John T. (1997) (p. 97)
American Samoa
Tutuila Islands
Tutuila Island   Anon. (1988) (p. 3)
American Samoa
Tutuila Islands
Tutuila Island   National Tropical Botanical Garden (U.S.A. Hawaii. Kalaheo.) (1993) (voucher ID: PTBG 43368)
Taxon name on voucher: Tridax procumbens
Commonwealth of the Northern Mariana Islands (US)
Northern Mariana Islands
Pagan Island introduced
Raulerson, L. (2006) (p. 68)
Commonwealth of the Northern Mariana Islands (US)
Northern Mariana Islands
Rota Island introduced
Fosberg, F. R./Sachet, Marie-Hélène/Oliver, Royce (1979) (p. 291)
Commonwealth of the Northern Mariana Islands (US)
Northern Mariana Islands
Saipan Island introduced
Fosberg, F. R./Sachet, Marie-Hélène/Oliver, Royce (1979) (p. 291)
Commonwealth of the Northern Mariana Islands (US)
Northern Mariana Islands
Tinian Island introduced
Fosberg, F. R./Sachet, Marie-Hélène/Oliver, Royce (1979) (p. 291)
Cook Islands
Southern Cook Islands
Rarotonga Island   McCormack, Gerald (2013)
Ecuador (Galápagos Islands)
Santa Cruz Group
Santa Cruz Island introduced
invasive
Charles Darwin Foundation (2008)
Federated States of Micronesia
Kosrae Island
Kosrae Island introduced
invasive
Josekutty, P. C./Wakuk, E. E./Joseph, M. J. (2002) (p. 63)
Federated States of Micronesia
Pohnpei Islands
Pohnpei Island introduced
Fosberg, F. R./Sachet, Marie-Hélène/Oliver, Royce (1979) (p. 291)
Federated States of Micronesia
Yap Islands
Ulithi Atoll introduced
Fosberg, F. R./Sachet, Marie-Hélène/Oliver, Royce (1979) (p. 291)
Federated States of Micronesia
Yap Islands
Yap (Waqab) Island introduced
Fosberg, F. R./Sachet, Marie-Hélène/Oliver, Royce (1979) (p. 291)
Fiji
Fiji Islands
Lakemba Island introduced
invasive
Smith, Albert C. (1991) (pp. 288-289)
Voucher cited: Garnock-Jones 906
Fiji
Fiji Islands
Matuku Island introduced
invasive
Smith, Albert C. (1991) (pp. 288-289)
Voucher cited: Bryan 227
Fiji
Fiji Islands
Ngau Island introduced
invasive
Smith, Albert C. (1991) (pp. 288-289)
Voucher cited: Smith 7958
Fiji
Fiji Islands
Ovalau Island introduced
invasive
Smith, Albert C. (1991) (pp. 288-289)
Voucher cited: DA 1362
Fiji
Fiji Islands
Vanua Levu Island introduced
invasive
Smith, Albert C. (1991) (pp. 288-289)
Vouchers cited: Greenwood 6A, Smith 6591, DA 10782
Fiji
Fiji Islands
Vanua Mbalavu Island introduced
invasive
Smith, Albert C. (1991) (pp. 288-289)
Vouchers cited: DA 3455, Bryan 585
Fiji
Fiji Islands
Viti Levu Island introduced
invasive
Smith, Albert C. (1991) (pp. 288-289)
Vouchers cited: Greenwood 6, DA 9721, DA 10421, Smith 4313, DA 9488, im Thurn 77, DA 9778, Smith 9616, Greenwood 6C, Greenwood 6B, DA 12612, H.B.R. Parham 33
French Polynesia
Marquesas Islands
Ua Pou (Huapu, Uapou, Uapu) Island introduced
invasive
Lorence, David H./Wagner, Warren L. (2013)
French Polynesia
Society Islands
Huahine Island introduced
invasive
Florence, J./Chevillotte, H./Ollier, C./Meyer, J.-Y. (2013)
Voucher cited: J. Florence & R. Tahuaitu 11706 (PAP)
Adventice
French Polynesia
Society Islands
Moorea Island   University of California (2006)
French Polynesia
Society Islands
Tahiti Island introduced
invasive
Welsh, S. L. (1998) (p. 81)
Vouchers cited: BRY 25466, BRY 25991
French Polynesia
Society Islands
Tahiti Island introduced
invasive
Florence, J./Chevillotte, H./Ollier, C./Meyer, J.-Y. (2013)
Voucher cited: J. Florence 2560 (PAP)
Adventice
French Polynesia
Society Islands
Tahiti Island   National Tropical Botanical Garden (U.S.A. Hawaii. Kalaheo.) (1981) (voucher ID: PTBG 37215)
Taxon name on voucher: Tridax procumbens L.
French Polynesia
Tuamotu Archipelago
Hao (Hau) Atoll introduced
invasive
Florence, J./Chevillotte, H./Ollier, C./Meyer, J.-Y. (2013)
Adventice
French Polynesia
Tuamotu Archipelago
Raro‘ia Atoll introduced
invasive
Meyer, Jean-Yves/Fourdrigniez, Marie (2008) (p. 13)
Adventice d'introduction européene.
Guam
Guam Island
Guam Island introduced
invasive
Stone, Benjamin C. (1970) (p. 586)
Guam
Guam Island
Guam Island introduced
Fosberg, F. R./Sachet, Marie-Hélène/Oliver, Royce (1979) (p. 291)
State of Hawaii
Hawaiian Islands
Hawai‘i (Big) Island introduced
invasive
Wagner, Warren L./Herbst, Derral R./Sohmer, S. H. (1999) (pp. 370-372)
State of Hawaii
Hawaiian Islands
Kaho‘olawe Island introduced
invasive
Wagner, Warren L./Herbst, Derral R./Sohmer, S. H. (1999) (pp. 370-372)
State of Hawaii
Hawaiian Islands
Kaua‘i Island introduced
invasive
Wagner, Warren L./Herbst, Derral R./Sohmer, S. H. (1999) (pp. 370-372)
State of Hawaii
Hawaiian Islands
Lāna‘i Island introduced
invasive
Wagner, Warren L./Herbst, Derral R./Sohmer, S. H. (1999) (pp. 370-372)
State of Hawaii
Hawaiian Islands
Maui Island introduced
invasive
Wagner, Warren L./Herbst, Derral R./Sohmer, S. H. (1999) (pp. 370-372)
State of Hawaii
Hawaiian Islands
Moloka‘i Island introduced
invasive
Wagner, Warren L./Herbst, Derral R./Sohmer, S. H. (1999) (pp. 370-372)
State of Hawaii
Hawaiian Islands
Ni‘ihau Island introduced
invasive
Wagner, Warren L./Herbst, Derral R./Sohmer, S. H. (1999) (pp. 370-372)
State of Hawaii
Hawaiian Islands
O‘ahu Island introduced
invasive
Wagner, Warren L./Herbst, Derral R./Sohmer, S. H. (1999) (pp. 370-372)
Japan (offshore islands)
Ogasawara (Bonin) Islands
Chichi-jima   National Tropical Botanical Garden (U.S.A. Hawaii. Kalaheo.) (1973) (voucher ID: PTBG 31194)
Taxon name on voucher: Tridax procumbens
Japan (offshore islands)
Ogasawara (Bonin) Islands
Bonin (Ogasawara) Islands introduced
Kato, Hidetoshi (2007)
Kiribati
Banaba Island
Banaba (Ocean) Island introduced
Fosberg, F. R./Sachet, Marie-Hélène/Oliver, Royce (1979) (p. 291)
Kiribati
Line Islands
Kiritimati (Christmas) Atoll introduced
invasive
Wester, Lyndon (1985) (p. 33)
Kiribati
Phoenix Islands
Kanton Island introduced
invasive
Fosberg, F. R./Stoddart, D. R. (1994) (p. 13)
Voucher cited: Fosberg & Stoddart 54887 (US, HAW, K)
Kiribati
Phoenix Islands
Orona (Hull) Atoll introduced
invasive
Fosberg, F. R./Stoddart, D. R. (1994) (p. 13)
"All plants seen were removed." Voucher cited Fosberg 55742 (US, BISH, K).
Kiribati
Tungaru (Gilbert) Islands
Abemama Atoll introduced
invasive
Space, James C./Imada, Clyde T. (2004) (p. 76)
Voucher: Imada 2003-140 (BISH 697752)
Kiribati
Tungaru (Gilbert) Islands
Butaritari Atoll introduced
Fosberg, F. R./Sachet, Marie-Hélène/Oliver, Royce (1979) (p. 291)
Kiribati
Tungaru (Gilbert) Islands
Butaritari Atoll introduced
invasive
Space, James C./Imada, Clyde T. (2004) (p. 78)
Kiribati
Tungaru (Gilbert) Islands
Butaritari Atoll   National Tropical Botanical Garden (U.S.A. Hawaii. Kalaheo.) (1972) (voucher ID: PTBG 31193)
Taxon name on voucher: Tridax procumbens
Kiribati
Tungaru (Gilbert) Islands
Maiana Atoll introduced
invasive
Space, James C./Imada, Clyde T. (2004) (p. 9)
Voucher: Imada 2003-115 (BISH 697726)
Kiribati
Tungaru (Gilbert) Islands
Tarawa Atoll introduced
Fosberg, F. R./Sachet, Marie-Hélène/Oliver, Royce (1979) (p. 291)
Kiribati
Tungaru (Gilbert) Islands
Tarawa Atoll introduced
invasive
Space, James C./Imada, Clyde T. (2004) (p. 75)
Marshall Islands
Ralik Chain
Bikini (Pikinni) Atoll introduced
invasive
Whistler, W. A./Steele, O. (1999) (p. 38)
Marshall Islands
Ralik Chain
Bikini (Pikinni) Atoll introduced
Fosberg, F. R. (1988) (p. 15)
Marshall Islands
Ralik Chain
Enewetak (Ãnewetak, Eniwetok) Atoll introduced
invasive
Whistler, W. A./Steele, O. (1999) (p. 38)
Marshall Islands
Ralik Chain
Kwajalein (Kuwajleen) Atoll introduced
Fosberg, F. R./Sachet, Marie-Hélène/Oliver, Royce (1979) (p. 291)
Marshall Islands
Ralik Chain
Kwajalein (Kuwajleen) Atoll introduced
invasive
Whistler, W. A./Steele, O. (1999) (p. 38)
Vouchers cited: Fosberg 31165, Herbst 8883, Herbst 8922, Herbst 8944, Herbst 8971, Herbst 8983, Herbst 8989, Whistler 11215
Marshall Islands
Ralik Chain
Kwajalein (Kuwajleen) Atoll introduced
invasive
Fosberg, F. R. (1955) (p. 22)
Voucher cited: Fosberg 31165 (US)
Marshall Islands
Ratak Chain
Majuro (Mãjro) Atoll introduced
invasive
Vander Velde, Nancy (2003) (p. 73)
Marshall Islands
Ratak Chain
Maloelap Atoll   Imada, Clyde (2006)
Marshall Islands
Ratak Chain
Wotje (Wõjjã) Atoll introduced
Vander Velde, Nancy/Vander Velde, Brian (2009) (p. 2)
Voucher cited: Vander Velde 0514200920
Marshall Islands
Ratak Chain
Wotje (Wõjjã) Atoll   National Tropical Botanical Garden (U.S.A. Hawaii. Kalaheo.) (2009) (voucher ID: PTBG 49760)
Taxon name on voucher: Tridax procumbens
Nauru
Nauru Island
Nauru Island introduced
Fosberg, F. R./Sachet, Marie-Hélène/Oliver, Royce (1979) (p. 291)
Nauru
Nauru Island
Nauru Island introduced
invasive
Thaman, R. R./Fosberg, F. R./Manner, H. I./Hassall, D. C. (1994) (p. 101)
Vouchers cited: Fosberg 58657 (US), Scully 145N (US), Thaman & Manner 25 (SUVA), Swarbrick 9548 (BRIU)
New Caledonia
Îles Bélep (Belep Islands)
Île Art introduced
MacKee, H. S. (1994) (p. 39)
Voucher cited: MacKee 19442
New Caledonia
Récifs D'Entrecasteaux (D'Entrecasteaux Reefs)
Île Surprise introduced
MacKee, H. S. (1994) (p. 39)
Voucher cited: Boulet in MacKee 31445
New Caledonia
Îles Loyauté (Loyalte Islands)
Îles Loyauté (Loyalty Islands) introduced
invasive
Tassin, Jacques (2005)
New Caledonia
Îles Loyauté (Loyalte Islands)
Île Lifou introduced
MacKee, H. S. (1994) (p. 39)
Vouchers cited: Cheesman 3356 (BM), MacKee 27281
New Caledonia
Îles Loyauté (Loyalte Islands)
Île Tiga introduced
MacKee, H. S. (1994) (p. 39)
Voucher cited: MacKee 45875
New Caledonia
Îles Loyauté (Loyalte Islands)
Île Walpole introduced
MacKee, H. S. (1994) (p. 39)
Vouchers cited: Hmakone & Sam in MacKee 25877, Benoit in MacKee 34402
New Caledonia
Îles Loyauté (Loyalte Islands)
Île Walpole introduced
Renevier, Alain/Cherrier, Jean-Francois (1991) (p. 16)
Voucher cited: Cherrier in MacKee 44063
New Caledonia
New Caledonia
New Caledonia Islands introduced
invasive
Gargominy, Oliver/Bouchet, Philipe/Pascal, Michel/Jaffre, Tanguy/Tourneu, Jean-Christophe (1996) (p. 379)
Rudérale, nombreuses localités
New Caledonia
New Caledonia Archipelago
Île Grande Terre introduced
invasive
Tassin, Jacques (2005)
New Caledonia
New Caledonia Archipelago
Île Grande Terre introduced
MacKee, H. S. (1994) (p. 39)
Vouchers cited: Compton 1603 (BM), Däniker 135, Barrau 75, Catala 64, Guinaudeau in MacKee 30106
New Caledonia
New Caledonia Archipelago
Île des Pins (Isle of Pines) introduced
invasive
Tassin, Jacques (2005)
New Caledonia
New Caledonia Archipelago
Île des Pins (Isle of Pines) introduced
MacKee, H. S. (1994) (p. 39)
Voucher cited: MacKee 13080
New Caledonia
New Caledonia Archipelago
Île Neba introduced
MacKee, H. S. (1994) (p. 39)
Voucher cited: MacKee 22739
Palau
Palau (Belau ) (main island group)
Angaur (Ngeaur) Island introduced
invasive
Space, James C./Waterhouse, Barbara/Miles, Joel E./Tiobech, Joseph/Rengulbai, Kashgar (2003) (p. 104)
Palau
Palau (Belau ) (main island group)
Angaur (Ngeaur) Island introduced
invasive
Space, James C./Lorence, David H./LaRosa, Anne Marie (2009) (p. 65)
Palau
Palau (Belau ) (main island group)
Angaur (Ngeaur) Island   Beleu National Museum (Republic of Palau. Koror.) (1978) (voucher ID: BNM 1148)
Taxon name on voucher: Tridax procumbens
Palau
Palau (Belau ) (main island group)
Babeldaob Island introduced
Fosberg, F. R./Sachet, Marie-Hélène/Oliver, Royce (1979) (p. 291)
Palau
Palau (Belau ) (main island group)
Babeldaob Island introduced
invasive
Space, James C./Waterhouse, Barbara/Miles, Joel E./Tiobech, Joseph/Rengulbai, Kashgar (2003) (p. 102)
Palau
Palau (Belau ) (main island group)
Peleliu (Beliliou) Island introduced
Fosberg, F. R./Sachet, Marie-Hélène/Oliver, Royce (1979) (p. 291)
Palau
Palau (Belau ) (main island group)
Peleliu (Beliliou) Island introduced
invasive
Space, James C./Waterhouse, Barbara/Miles, Joel E./Tiobech, Joseph/Rengulbai, Kashgar (2003) (p. 107)
Palau
Palau (Belau ) (main island group)
Peleliu (Beliliou) Island   Beleu National Museum (Republic of Palau. Koror.) (1969) (voucher ID: BNM 261)
Taxon name on voucher: Tridax procumbens
Papua New Guinea
Bismarck Archipelago
Bismarck Archipelago introduced
invasive
Peekel, P. G. [translated by E. E. Henty] (1984) (pp. 565, 567)
Sporadic; particularly about white settlements. A weed, introduced in early times, but still not present in New Ireland in 1908.
Papua New Guinea
Papua New Guinea (eastern New Guinea Island)
Papua New Guinea (eastern New Guinea Island) introduced
invasive
Henty, E. E./Pritchard, G. H. (1975) (p. 83)
From near sea level to about 700 m, very common.
Papua New Guinea
Papua New Guinea (eastern New Guinea Island)
Papua New Guinea (eastern New Guinea Island)   Waterhouse, D. F. (1997) (p. 66)
Philippines
Philippine Islands
Philippine Islands introduced
invasive
Waterhouse, D. F. (1993) (pp. 69, 79)
Samoa
Western Samoa Islands
Savai‘i Island   Whistler, W. A. (1988) (p. 13)
Solomon Islands
Solomon Islands
Solomon Islands   Swarbrick, John T. (1997) (p. 97)
Solomon Islands
Solomon Islands
Solomon Islands introduced
invasive
Hancock, I. R./Henderson, C. P. (1988) (p. 116)
Tonga
Vava‘u Group
Vava‘u Island   Whistler, W. A. (1988) (p. 13)
Tuvalu
Tuvalu (Ellis) Islands
Tuvalu Islands   Swarbrick, John T. (1997) (p. 97)
United States (other Pacific offshore islands)
Midway Atoll
Midway Atoll introduced
invasive
Wagner, Warren L./Herbst, Derral R./Sohmer, S. H. (1999) (pp. 370-372)
United States (other Pacific offshore islands)
Midway Atoll
Sand Island introduced
invasive
Starr, Forest/Starr, Kim/Loope, Lloyd (2008) (pp. B-14)
United States (other Pacific offshore islands)
Wake Islands
Wake Island introduced
invasive
Whistler, W. A./Steele, O. (1999) (p. 38)
Vanuatu
New Hebrides Islands
Vanuatu (Republic of)   Swarbrick, John T. (1997) (p. 97)
Wallis and Futuna
Wallis and Futuna (Horne) Islands
Wallis (‘Uvea) Island introduced
invasive
Meyer, Jean-Yves (2007) (p. 32)
Wallis and Futuna
Wallis and Futuna (Horne) Islands
Wallis and Futuna Islands   Whistler, W. A. (1988) (p. 13)
Pacific Rim
Country/Terr./St. &
Island group
Location Cited status &
Cited as invasive &
Cited as cultivated &
Cited as aboriginal introduction?
Reference &
Comments
Australia
Australia (continental)
Northern Territory introduced
invasive
Holm, Leroy/Doll, Jerry/Holm, Eric/Pancho, Jaun/Herberger, James (1997) (p. 862)
Australia
Australia (continental)
Queensland introduced
invasive
Holm, Leroy/Doll, Jerry/Holm, Eric/Pancho, Jaun/Herberger, James (1997) (p. 862)
Cambodia
Cambodia
Cambodia (Kingdom of) introduced
invasive
Waterhouse, D. F. (1993) (pp. 69, 79)
China
China
China (People's Republic of) introduced
invasive
Holm, Leroy/Doll, Jerry/Holm, Eric/Pancho, Jaun/Herberger, James (1997) (p. 862)
China
China
Hong Kong native
Wu, Te-lin (2001) (p. 289)
In wasteland.
Colombia
Colombia
Colombia (Republic of) native
U.S. Dept. Agr., Agr. Res. Serv. (2013)
Costa Rica
Costa Rica
Costa Rica (Republic of) native
U.S. Dept. Agr., Agr. Res. Serv. (2013)
Ecuador (Mainland)
Ecuador
Ecuador (Republic of) (continental)   Holm, Leroy/Doll, Jerry/Holm, Eric/Pancho, Jaun/Herberger, James (1997) (p. 862)
El Salvador
El Salvador
El Salvador (Republic of) native
U.S. Dept. Agr., Agr. Res. Serv. (2013)
Guatemala
Guatemala
Guatemala (Republic of) native
U.S. Dept. Agr., Agr. Res. Serv. (2013)
Honduras
Honduras
Honduras (Republic of) native
U.S. Dept. Agr., Agr. Res. Serv. (2013)
Indonesia
Indonesia
Indonesia (Republic of) introduced
invasive
Waterhouse, D. F. (1993) (pp. 69, 79)
Japan
Japan
Japan (country) introduced
invasive
Holm, Leroy/Doll, Jerry/Holm, Eric/Pancho, Jaun/Herberger, James (1997) (p. 862)
Japan
Japan
Japan (country) introduced
Mito, Toshikazu/Uesugi, Tetsuro (2004) (p. 190)
Malaysia
Malaysia
Malaysia (country of) introduced
invasive
Waterhouse, D. F. (1993) (pp. 69, 79)
Mexico
Mexico
Mexico (United Mexican States) native
U.S. Dept. Agr., Agr. Res. Serv. (2013)
Nicaragua
Nicaragua
Nicaragua (Republic of) native
U.S. Dept. Agr., Agr. Res. Serv. (2013)
Perú
Perú
Perú (Republic of) native
U.S. Dept. Agr., Agr. Res. Serv. (2013)
Singapore
Singapore
Singapore (Republic of) introduced
invasive
Waterhouse, D. F. (1993) (pp. 69, 79)
Singapore
Singapore
Singapore (Republic of) introduced
invasive
Chong, Kwek Yan/Tan, Hugh T. W./Corlett, Richard T. (2009) (p. 87)
Naturalised
Taiwan
Taiwan Island
Taiwan Island introduced
invasive
Holm, Leroy/Doll, Jerry/Holm, Eric/Pancho, Jaun/Herberger, James (1997) (p. 862)
Taiwan
Taiwan Island
Taiwan Island introduced
invasive
Ching-I Peng, ed. (2013)
Thailand
Thailand
Thailand (Kingdom of) introduced
invasive
Waterhouse, D. F. (1993) (pp. 69, 79)
Vietnam
Vietnam
Vietnam (Socialist Republic of) introduced
invasive
Waterhouse, D. F. (1993) (pp. 69, 79)
Indian Ocean
Country/Terr./St. &
Island group
Location Cited status &
Cited as invasive &
Cited as cultivated &
Cited as aboriginal introduction?
Reference &
Comments
Australia (Indian Ocean offshore islands)
Christmas Island Group
Christmas Island introduced
invasive
Swarbrick, J. T. (1997) (p. 130)
Australia (Indian Ocean offshore islands)
Cocos (Keeling) Islands
Cocos (Keeling) Islands introduced
invasive
Orchard, Anthony E., ed. (1993) (p. 37)
British Indian Ocean Territory
Chagos Archipelago
Diego Garcia Island introduced
Stoddart, D. R./Taylor, J. D., eds. (1971) (p. 159)
Voucher cited: Stoddart 783 (K, US)
British Indian Ocean Territory
Chagos Archipelago
Diego Garcia Island introduced
invasive
Whistler, W. Arthur (1996) (p. 26)
British Indian Ocean Territory
Chagos Archipelago
Diego Garcia Island   National Tropical Botanical Garden (U.S.A. Hawaii. Kalaheo.) (1995) (voucher ID: PTBG 37890)
Taxon name on voucher: Tridax procumbens L.
La Réunion (France)
La Réunion Island
La Réunion Island introduced
invasive
Comité français de l'Union Internationale pour la Conservation de la Nature en France (2013)
Maldives
Maldive Islands
Addu Atoll   Spicer, R. A./Newberry, D. MacC. (1979) (p. 12)
Maldives
Maldive Islands
Malè Atoll   Fosberg, F. R. (1957) (p. 35)
"Very common generally" Voucher cited: Fosberg 36865 (US)
Mauritius
Mautitius Islands (Mauritius and Rodrigues)
Mauritius Island introduced
invasive
Holm, Leroy/Doll, Jerry/Holm, Eric/Pancho, Jaun/Herberger, James (1997) (pp. 862, 867)
French Territory of Mayotte
Mayotte Islands
Mayotte Island introduced
invasive
Comité français de l'Union Internationale pour la Conservation de la Nature en France (2013)
Envahissant principalement dans les milieux perturbés.
Seychelles
Seychelles Islands
Agalega Island introduced
Fosberg, F. R./Sachet, Marie-Hélène/Stoddart, D. R. (1983) (p. 115)
Voucher cited: Stoddart 7283 (US)
Seychelles
Seychelles Islands
Coetivy Island   Robertson, S. A./Fosberg, F. R. (1983) (p. 146)
Voucher cited: Robertson 3074 (K)
Seychelles
Seychelles Islands
D'Arros Island   Stoddart, D. R./Coe, M. J./Fosberg, F. R. (1979) (p. 25)
Voucher cited: Stoddart 7164 (US)
Seychelles
Seychelles Islands
Marie-Louise Island   Wilson, J. R. (1983) (p. 189)
Seychelles
Seychelles Islands
Poivre Island   Robertson, S. A./Fosberg, F. R. (1983) (p. 169)
Voucher cited: Robertson 2346 (K)
Seychelles
Seychelles Islands
St. Joseph Island   Stoddart, D. R./Coe, M. J./Fosberg, F. R. (1979) (p. 48)
Voucher cited: Gwynne & Wood 974 (EA)

Additional information:
Additional online information about Tridax procumbens is available from the Hawaiian Ecosystems at Risk project (HEAR).

Information about Tridax procumbens as a weed (worldwide references) may be available from the Global Compendium of Weeds (GCW).

Taxonomic information about Tridax procumbens may be available from the Germplasm Resources Information Network (GRIN).

References:

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Beleu National Museum (Republic of Palau. Koror.). 1969. Voucher specimen #BNM261(Salsedo, Carl A. 140).

Beleu National Museum (Republic of Palau. Koror.). 1978. Voucher specimen #BNM1148(Canfield, J.E. 417).

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Parham, J. W. 1972. Plants of the Fiji Islands. Revised edition. Government Printer, Suva. 462 pp.

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This page was created on 26 JUL 2002 and was last updated on 4 SEP 2011.