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TAXON:Tridax Procumbens L. SCORE:15.0 RATING:High Risk TAXON: Tridax procumbens L. SCORE: 15.0 RATING: High Risk Taxon: Tridax procumbens L. Family: Asteraceae Common Name(s): coat buttons Synonym(s): tridax daisy Assessor: Chuck Chimera Status: Assessor Approved End Date: 19 Dec 2017 WRA Score: 15.0 Designation: H(HPWRA) Rating: High Risk Keywords: Perennial Herb, Crop Weed, Allelopathic, Self-Compatible, Wind-Dispersed Qsn # Question Answer Option Answer 101 Is the species highly domesticated? y=-3, n=0 n 102 Has the species become naturalized where grown? 103 Does the species have weedy races? Species suited to tropical or subtropical climate(s) - If 201 island is primarily wet habitat, then substitute "wet (0-low; 1-intermediate; 2-high) (See Appendix 2) High tropical" for "tropical or subtropical" 202 Quality of climate match data (0-low; 1-intermediate; 2-high) (See Appendix 2) High 203 Broad climate suitability (environmental versatility) y=1, n=0 y Native or naturalized in regions with tropical or 204 y=1, n=0 y subtropical climates Does the species have a history of repeated introductions 205 y=-2, ?=-1, n=0 y outside its natural range? 301 Naturalized beyond native range y = 1*multiplier (see Appendix 2), n= question 205 y 302 Garden/amenity/disturbance weed 303 Agricultural/forestry/horticultural weed n=0, y = 2*multiplier (see Appendix 2) y 304 Environmental weed 305 Congeneric weed 401 Produces spines, thorns or burrs y=1, n=0 n 402 Allelopathic y=1, n=0 y 403 Parasitic y=1, n=0 n 404 Unpalatable to grazing animals y=1, n=-1 n 405 Toxic to animals y=1, n=0 n 406 Host for recognized pests and pathogens y=1, n=0 y 407 Causes allergies or is otherwise toxic to humans 408 Creates a fire hazard in natural ecosystems y=1, n=0 n 409 Is a shade tolerant plant at some stage of its life cycle y=1, n=0 n Creation Date: 19 Dec 2017 (Tridax procumbens L.) Page 1 of 17 TAXON: Tridax procumbens L. SCORE: 15.0 RATING: High Risk Qsn # Question Answer Option Answer Tolerates a wide range of soil conditions (or limestone 410 y=1, n=0 y conditions if not a volcanic island) 411 Climbing or smothering growth habit y=1, n=0 n 412 Forms dense thickets 501 Aquatic y=5, n=0 n 502 Grass y=1, n=0 n 503 Nitrogen fixing woody plant y=1, n=0 n Geophyte (herbaceous with underground storage organs 504 y=1, n=0 n -- bulbs, corms, or tubers) Evidence of substantial reproductive failure in native 601 y=1, n=0 n habitat 602 Produces viable seed y=1, n=-1 y 603 Hybridizes naturally 604 Self-compatible or apomictic y=1, n=-1 y 605 Requires specialist pollinators y=-1, n=0 n 606 Reproduction by vegetative fragmentation 607 Minimum generative time (years) 1 year = 1, 2 or 3 years = 0, 4+ years = -1 1 Propagules likely to be dispersed unintentionally (plants 701 y=1, n=-1 y growing in heavily trafficked areas) 702 Propagules dispersed intentionally by people y=1, n=-1 n 703 Propagules likely to disperse as a produce contaminant y=1, n=-1 y 704 Propagules adapted to wind dispersal y=1, n=-1 y 705 Propagules water dispersed 706 Propagules bird dispersed y=1, n=-1 n 707 Propagules dispersed by other animals (externally) y=1, n=-1 n 708 Propagules survive passage through the gut y=1, n=-1 y 801 Prolific seed production (>1000/m2) y=1, n=-1 y Evidence that a persistent propagule bank is formed (>1 802 y=1, n=-1 y yr) 803 Well controlled by herbicides y=-1, n=1 y 804 Tolerates, or benefits from, mutilation, cultivation, or fire y=1, n=-1 n Effective natural enemies present locally (e.g. introduced 805 y=-1, n=1 n biocontrol agents) Creation Date: 19 Dec 2017 (Tridax procumbens L.) Page 2 of 17 TAXON: Tridax procumbens L. SCORE: 15.0 RATING: High Risk Supporting Data: Qsn # Question Answer 101 Is the species highly domesticated? n Source(s) Notes [No evidence of domestication] "Apparently native only from Wagner, W.L., Herbst, D.R.& Sohmer, S.H. 1999. Manual of Mexico, Central America, Venezuela, and Colombia to Peru and the flowering plants of Hawaii. Revised edition. University Bolivia, but now widespread throughout tropical and subtropical of Hawai͚i Press and Bishop Museum Press, Honolulu, HI. regions of the world" 102 Has the species become naturalized where grown? Source(s) Notes WRA Specialist. 2017. Personal Communication NA 103 Does the species have weedy races? Source(s) Notes WRA Specialist. 2017. Personal Communication NA Species suited to tropical or subtropical climate(s) - If 201 island is primarily wet habitat, then substitute "wet High tropical" for "tropical or subtropical" Source(s) Notes "Native: Northern America Northern Mexico: Mexico - Coahuila, - Nuevo Leon, - San Luis Potosi, - Sinaloa, - Sonora, - Tamaulipas Southern Mexico: Mexico - Campeche, - Chiapas, - Guerrero, - Hidalgo, - Jalisco, - Michoacan, - Nayarit, - Oaxaca, - Quintana Roo, - Veracruz, - Yucatan Southern America Brazil: Brazil USDA, ARS, Germplasm Resources Information Network. Caribbean: Anguilla; Antigua and Barbuda; Bahamas; Barbados; 2017. National Plant Germplasm System [Online Cayman Islands; Cuba; Dominica; Grenada; Guadeloupe; Hispaniola; Database]. http://www.ars-grin.gov/npgs/index.html. Jamaica; Martinique; Netherlands Antilles - Saba; Puerto Rico; St. [Accessed 19 Dec 2017] Kitts and Nevis; St. Lucia; St. Vincent and Grenadines; Trinidad and Tobago; Virgin Islands (British); Virgin Islands (U.S.) Central America: Belize; Costa Rica; El Salvador; Guatemala; Honduras; Nicaragua; Panama Northern South America: French Guiana; Guyana; Venezuela Southern South America: Argentina - Cordoba, - Formosa, - Jujuy, - Salta, - Tucuman Western South America: Bolivia; Colombia; Ecuador - Galapagos Islands, - Guayas; Peru - Huánuco" Creation Date: 19 Dec 2017 (Tridax procumbens L.) Page 3 of 17 TAXON: Tridax procumbens L. SCORE: 15.0 RATING: High Risk Qsn # Question Answer 202 Quality of climate match data High Source(s) Notes USDA, ARS, Germplasm Resources Information Network. 2017. National Plant Germplasm System [Online Database]. http://www.ars-grin.gov/npgs/index.html. [Accessed 19 Dec 2017] 203 Broad climate suitability (environmental versatility) y Source(s) Notes "T. procumbens occurs in many environments but is particularly well CABI, 2017. Invasive Species Compendium. Wallingford , adapted to coarse-textured soils in tropical regions (Holm et al., UK: CAB International. www.cabi.org/isc 1997). It is found at elevations from sea level to over 2000 m, often as a weed of roadsides, waste land, fallow land and crops." Native or naturalized in regions with tropical or 204 y subtropical climates Source(s) Notes "Apparently native only from Mexico, Central America, Venezuela, and Colombia to Peru and Bolivia, but now widespread throughout Wagner, W.L., Herbst, D.R.& Sohmer, S.H. 1999. Manual of tropical and subtropical regions of the world; in Hawai'i naturalized the flowering plants of Hawaii. Revised edition. University and relatively common primarily in low elevation, dry, disturbed of Hawai͚i Press and Bishop Museum Press, Honolulu, HI. habitats on Midway Atoll and all of the main islands except not yet documented from Ni'ihau." "Native: Northern America Northern Mexico: Mexico - Coahuila, - Nuevo Leon, - San Luis Potosi, - Sinaloa, - Sonora, - Tamaulipas Southern Mexico: Mexico - Campeche, - Chiapas, - Guerrero, - Hidalgo, - Jalisco, - Michoacan, - Nayarit, - Oaxaca, - Quintana Roo, - Veracruz, - Yucatan Southern America Brazil: Brazil Caribbean: Anguilla; Antigua and Barbuda; Bahamas; Barbados; Cayman Islands; Cuba; Dominica; Grenada; Guadeloupe; Hispaniola; Jamaica; Martinique; Netherlands Antilles - Saba; Puerto Rico; St. Kitts and Nevis; St. Lucia; St. Vincent and Grenadines; Trinidad and Tobago; Virgin Islands (British); Virgin Islands (U.S.) Central America: Belize; Costa Rica; El Salvador; Guatemala; Honduras; Nicaragua; Panama Northern South America: French Guiana; Guyana; Venezuela Southern South America: Argentina - Cordoba, - Formosa, - Jujuy, - Salta, - Tucuman Western South America: Bolivia; Colombia; Ecuador - Galapagos Islands, - Guayas; Peru - Huanuco Naturalized: Africa East Tropical Africa: Kenya; Tanzania; Uganda Macaronesia: Cape Verde Northeast Tropical Africa: Chad; Eritrea; Ethiopia; Somalia; Sudan Creation Date: 19 Dec 2017 (Tridax procumbens L.) Page 4 of 17 TAXON: Tridax procumbens L. SCORE: 15.0 RATING: High Risk USDA, ARS, Germplasm Resources Information Network. South Tropical Africa: Malawi; Mozambique; Zambia; Zimbabwe 2017. National Plant Germplasm System [Online Southern Africa: South Africa - KwaZulu-Natal, - Limpopo, - Database]. http://www.ars-grin.gov/npgs/index.html. Mpumalanga [Accessed 19 Dec 2017] West Tropical Africa: Benin; Burkina Faso; Cote D'Ivoire; Ghana; Guinea; Nigeria; Senegal; Sierra Leone; Togo West-Central Tropical Africa: Burundi; Cameroon; Central African Republic; Rwanda; Zaire Western Indian Ocean: British Indian Ocean Terr - Diego Garcia; Madagascar; Mauritius; Mayotte; Reunion; Seychelles Asia-Temperate Arabian Peninsula: Yemen China: China - Fujian, - Hainan Eastern Asia: Japan - Ryukyu Islands; Taiwan Asia-Tropical Indian Subcontinent: Bhutan; India; Nepal; Sri Lanka Indo-China: Cambodia; Thailand; Vietnam Malesia: Indonesia; Malaysia; Philippines Papuasia: Papua New Guinea; Solomon Islands Australasia Australia: Australia Northern America South-Central U.S.A.: United States - Texas Southeastern U.S.A.: United States - Florida Pacific North-Central Pacific: U.S. Outlying Islands - Midway Islands; United States - Hawaii Northwestern Pacific: Guam; Marshall Islands; Micronesia; Northern Mariana Islands; Palau; U.S. Outlying Islands - Wake Island South-Central
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