Argemone mexicana (Mexican poppy)
Index
- Pictures
- Identity
- Summary of Invasiveness
- Taxonomic Tree
- Notes on Taxonomy and Nomenclature
- Description
- Plant Type
- Distribution
- Distribution Table
- History of Introduction and Spread
- Introductions
- Risk of Introduction
- Habitat
- Habitat List
- Hosts/Species Affected
- Host Plants and Other Plants Affected
- Biology and Ecology
- Climate
- Latitude/Altitude Ranges
- Air Temperature
- Rainfall
- Rainfall Regime
- Soil Tolerances
- Natural enemies
- Notes on Natural Enemies
- Means of Movement and Dispersal
- Pathway Causes
- Pathway Vectors
- Plant Trade
- Impact Summary
- Economic Impact
- Environmental Impact
- Social Impact
- Risk and Impact Factors
- Uses
- Uses List
- Similarities to Other Species/Conditions
- Prevention and Control
- References
- Contributors
- Distribution Maps
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Top of pagePreferred Scientific Name
- Argemone mexicana L.
Preferred Common Name
- Mexican poppy
Other Scientific Names
- Argemone alba Raf.
- Argemone leiocarpa Greene
- Argemone mucronata Dum.Cours. ex Steud.
- Argemone sexvalis Stokes
- Argemone spinosa Gaterau
- Argemone versicolor Salisb.
- Argemone vulgaris Spach
- Echtrus mexicanus (L.) Nieuwl.
- Echtrus trivialis Lour.
- Papaver mexicanum (L.) E.H.L.Krause
International Common Names
- English: Bermuda thistle; goatweed; Mexican pricklepoppy; Mexican pricklypoppy; Mexican thistle; prickly poppy; yellow thistle
- Spanish: adormidera espinosa; amapolas de campo; amapolo pinchuda; cardo amarillo; cardo blanco; cardo santo; chicalote
- French: argémone du Mexique; argemone mexicaine; chardon béni; chardon du pays; herb a femme; pavot du Mexique; pavot epineux; tache de l’oeil
- Portuguese: papoula-do-Mexico
Local Common Names
- Angola: papoula; papoula-do-México
- Argentina: cardo amarillo
- Bahamas: donkey thistle
- Bangladesh: Shialkata
- Benin: débilo; timtonyakorou
- Brazil: cardo-amarelo; cardo-santa; cardo-santa-maria; figo-do-inferno; morro do chapéu; papoula-de-espinho; papoula-espinhosa
- Burkina Faso: bara; baragoué; blatoumé; mérékagnien; souroukou taba; yra
- Chile: chicalote
- China: ji ying su
- Côte d'Ivoire: baragoué; blatoumé; mandé; mérékagnien; ouinigbe; souroukou taba; wenigbé
- Dominican Republic: Jamaica yellow thistle
- Ecuador: yellow prickly poppy
- Ethiopia: baro bangi; eshok tilian; korehare; kossalae; madafe
- Finland: fin naam
- Germany: Mexikanischer Stachelmohn
- Haiti: cardon fleurs jaunes; chadron à fleurs jaunes; chardon béni; pavot epineux
- India: agara; bharband; bharbhar; brahamadandi; bramandandu; kantakusama; katelisatyanasi; satyonasi
- Indonesia: celangkringan; droedjoe; druju; tjelangkringan
- Italy: fico infernale; papavero del Messico; papavero messicano
- Japan: Azami-Geshi
- Kenya: ekijembajembe; mkumajalaga
- Madagascar: fantsimboay
- Malaysia: chelang keringan
- Mali: bozobo; gninnidie; simsimji
- Mauritius: chardon du pays
- Mexico: chicalote; chichilotl
- Myanmar: kye-ja
- Netherlands: stekelpapaver
- Niger: Boginahi; Dàyí gííwáá; Hákóórín kádà; Káákí rúwàn Allàh; Kàankámárkà tà bíí kà; kamukamu; Kánkààmáá; Karanko; Kùùrár fataakee; Kwarakko; Kwaranko; Wagiri; Wasiri
- Nigeria: akunakun; Boginahi; Dàyí gííwáá; Hákóórín kádà; Káákí rúwàn Allàh; Kàankámárkà tà bíí kà; kamukamu; Kánkààmáá; Karanko; Kùùrár fataakee; Kwarakko; Kwaranko; mafowokanmomi; Wagiri; Wasiri
- Pakistan: kanderi; kundiari; sialkanta
- Paraguay: Cardo santo
- Philippines: diluariu; kachumba; kasubang-aso
- Puerto Rico: cardosanto
- Senegal: gapéye korkot
- South Africa: ikhakhakhakha; yellow-flowered Mexican poppy
- Tanzania: akatojo; rangiibili; rikararungu
- Vietnam: caf gai hoa vafng; gai cua; mufi cua
- Zimbabwe: umjelemani
EPPO code
- ARGME (Argemone mexicana)
Summary of Invasiveness
Top of pageA. mexicana is a widespread annual weed primarily associated with agricultural crops and wastelands. It is a major weed of a number of crops in the tropics and warm temperate regions and is persistent as it produces a seed bank. In India in particular, the species is a health hazard and because of its prickliness, is a nuisance to subsistence farmers. In South Africa the seeds of A. mexicana have been declared as 'noxious' as its seeds or bits of seeds may represent a hazard to human or animal health when consumed (NDA, 2001). It is reported as invasive in many countries in Asia, Africa, the Caribbean and Americas, and Oceania (Australia and a number of Pacific island states).
Taxonomic Tree
Top of page- Domain: Eukaryota
- Kingdom: Plantae
- Phylum: Spermatophyta
- Subphylum: Angiospermae
- Class: Dicotyledonae
- Order: Papaverales
- Family: Papaveraceae
- Genus: Argemone
- Species: Argemone mexicana
Notes on Taxonomy and Nomenclature
Top of pageArgemone is from the Greek argena, meaning 'cataract of the eye', and was the name used in the first century AD by the classical authors Dioscorides (AD 40-90) and Pliny (AD 23-79) for some spiny poppies, the juice of which was supposedly a cure for cataract; mexicana combines Mexico with the Latin suffix ana, belonging to, suggesting the country of origin (Parsons and Cuthbertson, 1992).
Although Missouri Botanical Garden (2016) cites A. ochrouleuca as a synonym of A. mexicana, The Plant List (2016) and Otto and Verloove (2016) cite both as valid species. Of the names listed as synonyms, A. alba is reported as an illegitimate name (The Plant List, 2016). Many of the common names for this species result from the prickly stems and native range in Mexico.
Description
Top of pageA. mexicana is an annual herb, up to 150 cm tall with a slightly branched tap root. The stem is erect, branched, usually prickly, pale bluish-green and exudes an unpleasant-smelling yellow sap when cut. Leaves are alternate, without petioles, more or less sheathing the stem, up to 15 cm long, deeply lobed with irregularly toothed, spiny margins; greyish-white veins are conspicuous on the bluish-green upper surface of the leaves. Flowers are solitary, 2.5-4.5 cm in diameter, subtended by 1-2 leafy bracts; sepals 3, prickly; petals 4-6, yellow to pale orange, glabrous; stamens numerous. Fruit is a capsule, spiny, 2.5-5 cm long and 2 cm wide, with 4-6 valves opening at the tip to release numerous seeds. Seeds are brownish-black, nearly spherical, about 1 mm in diameter, covered in a fine network of veins, oily.
A. mexicana forma leiocarpa is a form found in West Africa which has few or no prickles on the stem, leaves and capsule (Lucas, 1962).
Distribution
Top of pageA. mexicana is native to tropical America but its native range is a matter of debate. It is thought that its natural distribution in North America included Mexico and southern Florida (Ownbey, 1997). It is probably native to much of South America but Mayworm et al. (1998) have stated that A. mexicana is an introduced and naturalized species in Brazil. Its distribution and status in tropical and warm regions of the world are likely to be seriously under-reported, considering that the species is sold as an ornamental or for ethnobotanical purposes.
As the species has probably often been confused with A. ochroleuca and even A. subfusiformis, its world distribution and abundance must be viewed with some caution. The species is found in Asia, Africa, North America, Central America, the Caribbean, South America, Europe, Oceania (see Distribution Table for details; Acevedo-Rodríguez and Strong, 2012; Flora do Brasil, 2016; PROSEA, 2016; PROTA, 2016; PIER, 2016; Missouri Botanical Garden, 2016). In Europe it was reported as being present in Bulgaria and Spain by Mowat (1964), but Greuter et al. (1989) stated that it was absent and reported in error.
Distribution Table
Top of pageThe distribution in this summary table is based on all the information available. When several references are cited, they may give conflicting information on the status. Further details may be available for individual references in the Distribution Table Details section which can be selected by going to Generate Report.
Last updated: 10 Feb 2022Continent/Country/Region | Distribution | Last Reported | Origin | First Reported | Invasive | Reference | Notes |
---|---|---|---|---|---|---|---|
Africa |
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Angola | Present | Introduced | |||||
Benin | Present | Introduced | |||||
Botswana | Present, Widespread | Introduced | Invasive | ||||
Burkina Faso | Present | Introduced | |||||
Cabo Verde | Present | Introduced | |||||
Cameroon | Present | Introduced | |||||
Comoros | Present | Introduced | |||||
Côte d'Ivoire | Present | Introduced | |||||
Egypt | Present, Widespread | Introduced | Invasive | ||||
Equatorial Guinea | Present | Introduced | |||||
Eritrea | Present | Introduced | Cultivated | ||||
Eswatini | Present | Introduced | |||||
Ethiopia | Present | Introduced | |||||
Gambia | Present | Introduced | |||||
Ghana | Present | Introduced | Original citation: Holm et al., 1989 | ||||
Guinea | Present | Introduced | |||||
Guinea-Bissau | Present | Introduced | |||||
Kenya | Present | Introduced | |||||
Liberia | Present | Introduced | |||||
Madagascar | Present | Introduced | |||||
Malawi | Present | Introduced | |||||
Mali | Present | Introduced | Cultivated | ||||
Mauritania | Present | ||||||
Mauritius | Present, Widespread | Introduced | Invasive | ||||
-Rodrigues | Present | Introduced | |||||
Mayotte | Present | Introduced | Invasive | Also cultivated | |||
Mozambique | Present | Introduced | |||||
Namibia | Present | Introduced | |||||
Niger | Present | Introduced | |||||
Nigeria | Present | Introduced | |||||
Réunion | Present | Introduced | |||||
Saint Helena | Present, Widespread | Introduced | Invasive | ||||
São Tomé and Príncipe | Present | Introduced | Invasive | ||||
Senegal | Present | Introduced | |||||
Seychelles | Present | Introduced | |||||
Sierra Leone | Present | Introduced | |||||
Somalia | Present | Introduced | |||||
South Africa | Present | Introduced | 1894 | ||||
Sudan | Present | Introduced | |||||
Tanzania | Present, Widespread | Introduced | Invasive | ||||
Togo | Present | Introduced | |||||
Uganda | Present | ||||||
Zambia | Present | Introduced | |||||
Zimbabwe | Present, Widespread | Introduced | Invasive | ||||
Asia |
|||||||
Bahrain | Present | Introduced | |||||
Bangladesh | Present, Widespread | Introduced | Invasive | ||||
Bhutan | Present | Introduced | 1987 | ||||
Cambodia | Present | Introduced | Invasive | ||||
China | Present | Introduced | 1972 | ||||
Hong Kong | Present | Introduced | 1851 | ||||
India | Present | Introduced | Invasive | Invasive in the Himalayan region | |||
-Andhra Pradesh | Present | Introduced | |||||
-Assam | Present | Introduced | Invasive | ||||
-Bihar | Present, Widespread | Introduced | Invasive | ||||
-Chandigarh | Present, Widespread | Introduced | Invasive | ||||
-Delhi | Present, Widespread | Introduced | Invasive | ||||
-Gujarat | Present | Introduced | |||||
-Karnataka | Present | Introduced | Invasive | Original citation: von Weizsõckerl (1995) | |||
-Madhya Pradesh | Present | Introduced | |||||
-Maharashtra | Present | Introduced | |||||
-Odisha | Present | ||||||
-Tamil Nadu | Present | Introduced | Original citation: Shanmughave (1995) | ||||
-Uttar Pradesh | Present | Introduced | |||||
Indonesia | Present | Introduced | |||||
-Java | Present | Introduced | |||||
-Lesser Sunda Islands | Present | Introduced | Lesser Sunda Islands | ||||
-Maluku Islands | Present | Introduced | |||||
-Sulawesi | Present | Introduced | |||||
Israel | Present, Few occurrences | Introduced | |||||
Japan | Present | Introduced | |||||
-Ryukyu Islands | Present, Localized | Native and Introduced | |||||
Lebanon | Present | Introduced | |||||
Malaysia | Present | Introduced | |||||
Maldives | Present | Introduced | |||||
Nepal | Present | Introduced | 1910 | ||||
Oman | Present | Introduced | |||||
Pakistan | Present | Introduced | |||||
Philippines | Present | Introduced | Invasive | ||||
Saudi Arabia | Present | Introduced | Original citation: Abdel Hafez (1985) | ||||
Syria | Present, Widespread | Introduced | Invasive | ||||
Taiwan | Present | Introduced | Invasive | ||||
Thailand | Present | Introduced | |||||
Turkey | Present | Introduced | |||||
Vietnam | Present | Introduced | |||||
Yemen | Present, Widespread | Introduced | Invasive | ||||
-Socotra | Present | Introduced | First reported: <1978 | ||||
Europe |
|||||||
Albania | Present, Only in captivity/cultivation | Introduced | |||||
Austria | Present | Introduced | First reported: <1925 | ||||
Belgium | Present | Introduced | 1861 | ||||
Bulgaria | Present | Introduced | |||||
Czechia | Absent, Formerly present | Original citation: Pysek et al, (1989) | |||||
France | Present, Few occurrences | Introduced | |||||
Germany | Present | Introduced | |||||
Greece | Present, Only in captivity/cultivation | Introduced | |||||
Italy | Present, Few occurrences | Introduced | |||||
Norway | Present | Introduced | 1872 | ||||
Poland | Present | Introduced | 1939 | ||||
Portugal | Present | Introduced | |||||
-Madeira | Present | Introduced | 1974 | ||||
Spain | Present | Introduced | Original citation: de Lorenzo Caceres, unda | ||||
-Balearic Islands | Present | Introduced | Original citation: de Lorenzo Caceres, unda | ||||
-Canary Islands | Present | Introduced | Original citation: de Lorenzo Caceres, unda | ||||
Switzerland | Present | Introduced | |||||
Ukraine | Present, Only in captivity/cultivation | Introduced | |||||
United Kingdom | Present | Introduced | Scattered in Central and South England | ||||
North America |
|||||||
Anguilla | Present | Native | |||||
Antigua and Barbuda | Present | Native | |||||
Aruba | Present | Native | |||||
Bahamas | Present | Native | |||||
Barbados | Present | Native | |||||
Belize | Present | ||||||
Bonaire, Saint Eustatius and Saba | |||||||
-Bonaire | Present | Native | |||||
-Saba | Present | Native | |||||
-Sint Eustatius | Present | Native | |||||
British Virgin Islands | Present | Native | Guana Island, Tortola, Virgin Gorda | ||||
Canada | Present | Introduced | Ontario | ||||
-Ontario | Present | Introduced | |||||
Cayman Islands | Present | Native | |||||
Costa Rica | Present | Native | Cartago, Guanacaste, Heredia, Puntarenas, San José | ||||
Cuba | Present, Widespread | Introduced | Invasive | ||||
Curaçao | Present | Native | |||||
Dominica | Present | ||||||
Dominican Republic | Present | Native | |||||
El Salvador | Present | Native | La Libertad, Santa Ana, Sonsonate | ||||
Grenada | Present | Native | |||||
Guadeloupe | Present | Native | |||||
Guatemala | Present | Native | Chimaltenango, Guatemala, Huehuetenango, Sacatepéquez | ||||
Haiti | Present | Native | |||||
Honduras | Present | Native | Comayagua, Francisco Morazán, Gracias a Dios, Lempira, Olancho. | ||||
Jamaica | Present | ||||||
Martinique | Present | Native | |||||
Mexico | Present | Native | |||||
Montserrat | Present | Native | |||||
Nicaragua | Present, Widespread | Native | |||||
Panama | Present | Native | |||||
Puerto Rico | Present, Widespread | Native | |||||
Saint Kitts and Nevis | Present | Native | |||||
Saint Lucia | Present | Native | |||||
Trinidad and Tobago | Present | Native | |||||
U.S. Virgin Islands | Present | Native | St. Croix, St. John, St. Thomas | ||||
United States | Present | ||||||
-Alabama | Present | Introduced | |||||
-Connecticut | Present | Introduced | |||||
-District of Columbia | Present | Introduced | |||||
-Florida | Present | Native | |||||
-Georgia | Present | Introduced | |||||
-Hawaii | Present | Introduced | 1934 | ||||
-Illinois | Present | Introduced | |||||
-Indiana | Present | Introduced | |||||
-Kansas | Present, Widespread | Introduced | Invasive | ||||
-Louisiana | Present | ||||||
-Maine | Present | Introduced | |||||
-Maryland | Present | Introduced | |||||
-Massachusetts | Present | Introduced | |||||
-Michigan | Present | Introduced | |||||
-Missouri | Present | Introduced | |||||
-Nebraska | Present | Introduced | |||||
-Nevada | Present | Introduced | |||||
-New Jersey | Present | Introduced | |||||
-New York | Present | Introduced | |||||
-North Carolina | Present | Introduced | |||||
-Pennsylvania | Present | Introduced | |||||
-South Carolina | Present | Introduced | |||||
-Tennessee | Present | Introduced | |||||
-Texas | Present | Introduced | |||||
-Virginia | Present | Introduced | |||||
Oceania |
|||||||
Australia | Present | Present based on regional distribution. | |||||
-New South Wales | Present | Introduced | |||||
-Northern Territory | Present | Introduced | |||||
-Queensland | Present | Introduced | |||||
-South Australia | Present | Introduced | |||||
-Victoria | Present | Introduced | |||||
-Western Australia | Present | Introduced | |||||
Christmas Island | Present, Widespread | Introduced | Invasive | ||||
Fiji | Present | Introduced | |||||
French Polynesia | Present | Introduced | Invasive | Tubuai Island | |||
Guam | Present | Introduced | And cultivated | ||||
New Caledonia | Present | Introduced | 1900 | ||||
New Zealand | Present | Introduced | |||||
Niue | Present | Introduced | |||||
Northern Mariana Islands | Present | Introduced | Tinian Island | ||||
Palau | Present | Introduced | |||||
Samoa | Present | Introduced | |||||
Vanuatu | Present | Introduced | |||||
South America |
|||||||
Argentina | Present | ||||||
Bolivia | Present | Introduced | Chuquisaca, Cochabamba, La Paz, Santa Cruz | ||||
Brazil | Present | Introduced | |||||
-Alagoas | Present | ||||||
-Amazonas | Present | ||||||
-Bahia | Present | ||||||
-Ceara | Present | ||||||
-Espirito Santo | Present | Introduced | |||||
-Goias | Present | ||||||
-Maranhao | Present | ||||||
-Mato Grosso | Present | ||||||
-Mato Grosso do Sul | Present | Introduced | |||||
-Minas Gerais | Present | ||||||
-Paraiba | Present | ||||||
-Parana | Present | ||||||
-Pernambuco | Present | ||||||
-Piaui | Present | ||||||
-Rio de Janeiro | Present | Introduced | |||||
-Rio Grande do Norte | Present | ||||||
-Santa Catarina | Present | Introduced | |||||
-Sao Paulo | Present | ||||||
-Sergipe | Present | ||||||
Chile | Present | ||||||
Colombia | Present | Introduced | Magdalena, Santander, Valle del Cauca | ||||
Ecuador | Present, Localized | Native and Introduced | Original citation: Tye (1999) | ||||
French Guiana | Present | Native | |||||
Guyana | Present | Native | Boquerón, Concepción, Paraguarí | ||||
Paraguay | Present | Native | |||||
Peru | Present | ||||||
Suriname | Present | Native | |||||
Uruguay | Present | ||||||
Venezuela | Present |
History of Introduction and Spread
Top of pageA. mexicana has been introduced accidentally (seed contaminant), as an ornamental or for its cultivation mainly for ethnobotanical purposes (Healy, 1961, APPEAR, 2016, PROSEA, 2016). Little is known about the history of its introduction and spread around the world. By 1814 it was the commonest weed of St Helena and was first recorded on Ascension in 1828. In New Zealand, it was accidentally introduced with imported wheat in the 1890s (Healy, 1961). The plant was introduced to Hawaii as an ornamental and was first recorded in 1934 (Wester, 1992). Tye (1999) reported that the plant was still relatively uncommon and suspected that it may become problematic in the future. In the Czech Republic, it was first reported occurring in the wild in 1965, but appears to have become extinct (Pysek et al., 2002).
Introductions
Top of pageIntroduced to | Introduced from | Year | Reason | Introduced by | Established in wild through | References | Notes | |
---|---|---|---|---|---|---|---|---|
Natural reproduction | Continuous restocking | |||||||
New Zealand | 1890 | Yes | No | Healy (2961) | Accidentally introduced with imported wheat | |||
Hawaii | 1934 | Ornamental purposes (pathway cause) | Yes | No | Wester (1992) | |||
Czech Republic | 1965 | No | No | Pysek et al. (2002) | ||||
Saint Helena | 1814 | Yes | No | Ashmole and Ashmole (2000) |
Risk of Introduction
Top of pageA. mexicana is an annual herb with a high likelihood of further introduction. Being still considered as a desirable ornamental in parts of the world it is likely to be further introduced within regions where its distribution is still restricted. The species can be seen at construction sites and it is also used for landscaping and gardens, from which it can invade nearby areas (Foxcroft et al., 2006). Seeds of A. mexicana can be readily dispersed via contaminated soils, crop and seed products (Healy, 1961; PROTA, 2016). It is also in high demand over the internet due to its ethnobotanical uses.
Habitat
Top of pageA. mexicana is adapted to a wide range of habitats. It is reported as occurring mainly in regions with a distinct dry season (PROTA, 2016). It occurs as a weed of arable land, pastures and in waste places, roadsides, railways and fence rows. It is also used as an ornamental in urban areas (PROTA, 2016). In Cuba the plant was found to be typical of hygrophilous meadows (Seifriz, 1943). In East Africa it is reported in grasslands and savannas (Lyons, 2000). It is known from sea level up to 3400 m elevation (Missouri Botanical Garden, 2016).
Habitat List
Top of pageCategory | Sub-Category | Habitat | Presence | Status |
---|---|---|---|---|
Terrestrial | ||||
Terrestrial | Managed | Cultivated / agricultural land | Present, no further details | Harmful (pest or invasive) |
Terrestrial | Managed | Cultivated / agricultural land | Present, no further details | Natural |
Terrestrial | Managed | Disturbed areas | Present, no further details | Natural |
Terrestrial | Managed | Rail / roadsides | Present, no further details | Harmful (pest or invasive) |
Terrestrial | Managed | Urban / peri-urban areas | Present, no further details | Natural |
Terrestrial | Natural / Semi-natural | Natural grasslands | Present, no further details | Harmful (pest or invasive) |
Terrestrial | Natural / Semi-natural | Natural grasslands | Present, no further details | Natural |
Terrestrial | Natural / Semi-natural | Riverbanks | Present, no further details | Harmful (pest or invasive) |
Terrestrial | Natural / Semi-natural | Riverbanks | Present, no further details | Natural |
Hosts/Species Affected
Top of pageA. mexicana is a weed of most cropping systems, including large- and small-grain cereals, legumes, vegetables, fibre crops (cotton, sisal) and perennial crops (coffee, sugarcane). It appears that any crop has the potential to be infested with A. mexicana if grown within the habitat range of this weed.
Host Plants and Other Plants Affected
Top of pagePlant name | Family | Context | References |
---|---|---|---|
Agave sisalana (sisal hemp) | Agavaceae | Other | |
Arachis hypogaea (groundnut) | Fabaceae | Other | |
Bocconia arborea | Papaveraceae | Unknown | |
Bocconia frutescens (plume poppy) | Papaveraceae | Unknown | |
Coffea (coffee) | Rubiaceae | Other | |
Gossypium (cotton) | Malvaceae | Main | |
Medicago sativa (lucerne) | Fabaceae | Other | |
Nicotiana tabacum (tobacco) | Solanaceae | Other | |
Phaseolus vulgaris (common bean) | Fabaceae | Main | |
Saccharum officinarum (sugarcane) | Poaceae | Other | |
Solanum tuberosum (potato) | Solanaceae | Other | |
Sorghum bicolor (sorghum) | Poaceae | Main | |
Triticum aestivum (wheat) | Poaceae | Main | |
Zea mays (maize) | Poaceae | Main |
Biology and Ecology
Top of pageGenetics
A. mexicana is a diploid species, 2n=28. A. ochroleuca is a tetraploid (2n=56). The occurrence of 5% of triploids (2n=42) in a population of A. ochroleuca suggest the possibility of a natural hybridization between these genetically close species (Chaturvedi et al., 1999). Although it was recognised for some time that both species could hybridize, the hybrid, Argemone x hybrida, was just recently described by Otto and Verloove (2016). DNA barcode information for the species is available at the Barcode of Life Data Systems (BOLDS, 2016). Germplasm is stored at various institutions (Kew Royal Botanic Gardens, 2016; USDA-ARS, 2016).
Physiology and Phenology
A. mexicana is a long-blooming plant. In the Temperate Zone flowering occurs in summer-autumn. Elsewhere the species flowers and fruits throughout the year (PROTA, 2016; Matthew, 1999).
Reproductive Biology
The physiology of seed production and germination varies throughout the world. Mauritius reports the greatest seed production with an average of 60 to 90 capsules per plant with 300 to 400 seeds in each capsule (Holm et al., 1977). Seeds are dormant when shed and have an after-ripening period of several weeks or months. In eastern Africa and Australia, seeds germinate at any time of year if moisture is available but, in Mauritius, germination only occurs in the cooler months (Parsons and Cuthbertson, 1992). In India also, it has been noted that germination occurs late in the season, with low night temperatures (Ambasht, 1992). Most seeds fall around the base of the parent plant where they form a carpet of seedlings. Dispersal occurs in surface water and in mud adhering to farm machinery and the feet of man and livestock. Seeds are readily eaten by a number of bird species in Puerto Rico as indicated by the presence of many seeds of the species in birds' stomachs (Barnés, 1946). In Ethiopia, most seeds do not normally germinate the year after shedding. Instead they enter the seed bank and seedlings establish, even in well-maintained field, probably for many years (Karlsson et al., 2003).
Environmental Requirements
A. mexicana occurs mainly in dry areas, but can grow in humid and semi-arid areas and a wide range of soil types. It tends to grow best in soils of low fertility and, in Australia, is peculiarly adapted to colonise derelict areas low in phosphorus (Parsons and Cuthbertson, 1992). A. mexicana is better suited to grow at sites deficient in nitrogen whereas the closely related A. ochroleuca does better where phosphorus is limiting (Ramakrishnan and Gupta, 1972). However, neither species appear to have obvious restriction to particular agronomic or environmental situations (Karlsson et al., 2003).
In southern India A. mexicana occurs up to an altitude of 800 m (Matthew, 1999): and is reported from near sea level to 3000 m throughout all its range (PROTA, 2016). When growing in undisturbed land, it can produce fresh weights of 6-9 t/ha, but in cultivated land, it is generally not an aggressive competitor (Holm et al., 1977). It can grow in acid, neutral or alkaline pH, preferring light and sandy soils (PROTA, 2016). It will not grow in the shade, and can tolerate droughts and temperatures down to ca. -5°C (PROTA, 2016).
Associations
In India grazing effects forest vegetation structure. It reduces grass cover and leads to the appearance of unpalatable species, including A. mexicana (Shanmughave, 1995).
Climate
Top of pageClimate | Status | Description | Remark |
---|---|---|---|
Am - Tropical monsoon climate | Preferred | Tropical monsoon climate ( < 60mm precipitation driest month but > (100 - [total annual precipitation(mm}/25])) | |
As - Tropical savanna climate with dry summer | Preferred | < 60mm precipitation driest month (in summer) and < (100 - [total annual precipitation{mm}/25]) | |
Aw - Tropical wet and dry savanna climate | Preferred | < 60mm precipitation driest month (in winter) and < (100 - [total annual precipitation{mm}/25]) | |
BS - Steppe climate | Preferred | > 430mm and < 860mm annual precipitation | |
BW - Desert climate | Preferred | < 430mm annual precipitation | |
Cs - Warm temperate climate with dry summer | Preferred | Warm average temp. > 10°C, Cold average temp. > 0°C, dry summers | |
Cf - Warm temperate climate, wet all year | Preferred | Warm average temp. > 10°C, Cold average temp. > 0°C, wet all year |
Latitude/Altitude Ranges
Top of pageLatitude North (°N) | Latitude South (°S) | Altitude Lower (m) | Altitude Upper (m) |
---|---|---|---|
52 | 40 |
Air Temperature
Top of pageParameter | Lower limit | Upper limit |
---|---|---|
Absolute minimum temperature (ºC) | -5 | |
Mean annual temperature (ºC) | 10 | 35 |
Rainfall
Top of pageParameter | Lower limit | Upper limit | Description |
---|---|---|---|
Mean annual rainfall | 124 | 1400 | mm; lower/upper limits |
Soil Tolerances
Top of pageSoil drainage
- free
Soil reaction
- acid
- alkaline
- neutral
Soil texture
- light
- medium
Special soil tolerances
- infertile
Natural enemies
Top of pageNatural enemy | Type | Life stages | Specificity | References | Biological control in | Biological control on |
---|---|---|---|---|---|---|
Aspergillus niger | Pathogen | Plants|Whole plant | not specific | |||
Helicoverpa assulta | Herbivore | Plants|Stems | not specific | |||
Rotylenchulus reniformis | Parasite | Plants|Roots | not specific | |||
Xanthomonas campestris | Pathogen | Plants|Leaves | not specific |
Notes on Natural Enemies
Top of pageA bacterial wilt, Xanthomonas papavericola [X. campestris pv. papavericola], periodically checks the growth of A. mexicana in some areas (Holm et al., 1977) but there is a dearth of information on natural enemies of this weed. Some organisms reported affecting the species are Aspergillus niger, Rotylenchulus reniformis and Helicoverpa assulta.
Means of Movement and Dispersal
Top of pageNatural Dispersal (Non-Biotic)
A. mexicana is reported as being dispersed by water and wind (PROTA, 2016).
Vector Transmission (Biotic)
Birds might be dispersers as they have been seen eating the fruits (Barnés, 1946).
Accidental Introduction
The species has been reported as unintentionally introduced into the Indian Himalayas through trade exchange, including grain import (Chandra Sekar, 2012).
Intentional Introduction
A. mexicana has been used and introduced as an ornamental and for ethnobotanical purposes throughout its range (PROTA, 2016).
Pathway Causes
Top of pageCause | Notes | Long Distance | Local | References |
---|---|---|---|---|
Crop production | A weed of cultivated land | Yes | Yes | PROTA (2016) |
Digestion and excretion | Seeds found in birds' stomachs | Yes | Barnés (1946) | |
Disturbance | Yes | PROTA (2016) | ||
Escape from confinement or garden escape | Yes | |||
Garden waste disposal | Yes | Healy (2961) | ||
Horticulture | Used as an ornamental. | Yes | Yes | PROTA (2016) |
Internet sales | Yes | Yes | ||
Medicinal use | Yes | Yes | PROTA (2016) | |
Ornamental purposes | Yes | Yes | ||
Seed trade | Seeds are available over the internet | Yes | Yes |
Pathway Vectors
Top of pageVector | Notes | Long Distance | Local | References |
---|---|---|---|---|
Plants or parts of plants | Seed contaminant | Yes | ||
Soil, sand and gravel | Yes | Yes | ||
Clothing, footwear and possessions | Seeds dispersed in mud adhering to footwear | Yes | Mankeleja et al. (2014) | |
Machinery and equipment | Seeds dispersed in mud adhering to machinery | Yes | Mankeleja et al. (2014) | |
Livestock | Seeds adhering to animals | Yes | Mankeleja et al. (2014) | |
Water | Yes | PROTA (2016) | ||
Water | Yes | PROTA (2016) |
Plant Trade
Top of pagePlant parts liable to carry the pest in trade/transport | Pest stages | Borne internally | Borne externally | Visibility of pest or symptoms |
---|---|---|---|---|
True seeds (inc. grain) | weeds/seeds | Yes |
Impact Summary
Top of pageCategory | Impact |
---|---|
Animal/plant collections | None |
Animal/plant products | Negative |
Biodiversity (generally) | None |
Crop production | Negative |
Environment (generally) | None |
Fisheries / aquaculture | None |
Forestry production | None |
Human health | Negative |
Livestock production | None |
Native fauna | None |
Native flora | None |
Rare/protected species | None |
Tourism | None |
Trade/international relations | None |
Transport/travel | None |
Economic Impact
Top of pageA. mexicana is a principal weed of beans and maize in Tanzania, cereals in Australia and India, cotton in Nicaragua, potatoes in India, tobacco in Argentina and Puerto Rico, and wheat in Pakistan (Holm et al., 1977). In Bangladesh, it grows in wheat, sugarcane, potato, pulses and tea fields (Islam et al., 2003). In Florida, USA, it is reported as a weed in tomato crops (Johnson, 1997) and Vaughan and Wiehe (1937) stated that it was frequent in cane fields in Mauritius. A. mexicana is one of the main weeds associated with common bean (Phaseolus vulgaris) in Nicaragua (Alemán, 2001). In the late 19th century the plant was not considered to be a bad weed in Kansas, USA (Hitchcock and Clothier, 1898). A. mexicana has an inhibitory effect on germination and seedling growth of vegetables (Hazarika and Sannigrahi, 2001) and weed residues may affect Bambara groundnut (Vigna subterranea) and sorghum (Sorghum bicolor) growth and development because of inhibitory effects of allelochemicals (Karikari et al. 2000).
In poultry, one ounce of seed causes symptoms (e.g. decreased egg production), and 2 ounces usually cause death (Everest et al., undated). Grazing animals generally avoid this weed but can be poisoned if it is consumed in hay or chaff. The species produces aflatoxins that are toxic to animals consuming contaminated crops and also could be found in milk, eggs and meat products (Alemayehu and Desalegn, 2016). The value of wool is decreased when contaminated by the prickly fruits of A. mexicana (Parsons and Cuthbertson, 1992). Harvesting by hand of low-growing field crops can be a painful experience in the presence A. mexicana and hired labour may expect to be paid a premium in these conditions.
Environmental Impact
Top of pageIslam et al. (2003) has ascertained that the species reduces plant diversity, and Kumar and Rohatgi (1999) postulated that it decreases biodiversity in India. In Tanzania the plant is commonly found in the Lake Manyara National Park (Lyons, 2000). Alemayehu and Desalegn (2016) report a decrease in plant and animal diversity, and a disrupt in the ecosystems structure and function in Ethiopia. According to Namkeleja et al. (2014) the allelochemicals produced by A. mexicana can affect the germination, growth and chlorophyll content of plants in natural ecosystems.
Social Impact
Top of pageA. mexicana has had a major impact on human health in the Indian subcontinent. Edible vegetable oil either accidentally contaminated with A. mexicana or intentionally adulterated by unscrupulous traders has resulted in a dropsy epidemic. Such an epidemic occurred in 1998 in Delhi (India) and also has been reported from Nepal (Jha et al., 2001; Sharma et al., 2002). Sharma et al. (1999) have provided a review of the clinical effects of adulterated oil and suggested preventive measures. An epidemic occurred in South Africa following the contamination of wheat flour (Sharma et al., 1999). In northern and central India, A. mexicana has been identified as an important allergen (Singh and Kumar, 2004). Subsistence farmers in the Ethiopian Highlands find this prickly plant difficult to manage in cereal fields.
Risk and Impact Factors
Top of page- Invasive in its native range
- Proved invasive outside its native range
- Has a broad native range
- Abundant in its native range
- Highly adaptable to different environments
- Is a habitat generalist
- Tolerates, or benefits from, cultivation, browsing pressure, mutilation, fire etc
- Pioneering in disturbed areas
- Fast growing
- Has high reproductive potential
- Gregarious
- Has propagules that can remain viable for more than one year
- Ecosystem change/ habitat alteration
- Negatively impacts agriculture
- Negatively impacts human health
- Negatively impacts animal health
- Negatively impacts livelihoods
- Reduced native biodiversity
- Threat to/ loss of native species
- Damages animal/plant products
- Allelopathic
- Competition - monopolizing resources
- Hybridization
- Poisoning
- Rapid growth
- Produces spines, thorns or burrs
- Highly likely to be transported internationally accidentally
- Highly likely to be transported internationally deliberately
- Difficult to identify/detect as a commodity contaminant
- Difficult/costly to control
Uses
Top of pageEconomic Value
A. mexicana has shown antibiotic activity against Staphylococcus aureus, S. agalectiaei and Escherichia coli, with potential in the pharmaceutical industry (Alemayehu and Desalegn, 2016). It has been cultivated for its seed oil, which is used for soap production and for fuel (Hanelt and IPK, 2016).
Social Benefit
A. mexicana is used for religious purposes in Central America (Hanelt and IPK, 2016).
Extracts of the leaves, flowers and seeds of A. mexicana have been tested, mostly under laboratory conditions in India, against insect pests (Chitra et al., 1997), crop pathogens (Singh et al., 1993) and nematodes (Das and Sukul, 1988; Saxena and Tabassum, 2000; Shaukat et al., 2002). Aqueous extracts have been tested with success against Tropical Hen Louse, Lipeurus lawrensis tropicalis (Kumar et al. 2002). Studies suggest that the extracts from the roots can be used to prevent oviposition and act as ovicidal against Aedes aegypti (Warikoo and Kumar, 2014). Von Weizsäckerl (1995) reported that it is used in parts of India to prepare antifeedant sprays in the same way as is done with leaves of Azadirachta indica. Extracts of A. mexicana readily kill the snail Biomphalaria glabrata and thus have potential as a molluscide for the relatively cheap control of human schistosomiasis (Melendez and Capriles, 2002). Although control or suppression of these pests has been found, there is little evidence for the widespread practical exploitation of these findings.
Medicinal properties have been attributed to the sap and oil from the seed (Holm et al., 1977). In the Guianas the whole plant is used as an infusion against asthma. The root is taken in rum and cognac for stomach pain. Sap from the cut end of the stem is applied to cavities as a treatment for toothache. Children having difficulty with urination are given infusions of petals (DeFilipps et al., 2004). In India (Madhya Pradesh) it is reported to be a homeopathic drug (Oudhia et al., 1998). In West Africa it is used as a cosmetic, i.e. a washing milk (Rukangira, 2001).
In East Africa, the seeds are ground and put into beer or tea to increase their potency and cause drunkenness (Verdcourt and Trump, 1969). In India, A. mexicana seeds are added to mustard oil in very small quantities, to increase its pungency. However, recently in New Delhi, over 60 deaths have been attributed to adulteration of mustard oil with larger quantities of A. mexicana, as a means of reducing costs (The Indian Society of Weed Science, 1998).
Environmental services
Although the species has been reported as poisonous to animals, lemurs were seen eating the stems of the plants when other resources were scarce after a devastating cyclone in Madagascar (LaFleur and Gould, 2009). No detrimental health issues on the lemurs were reported by the authors.
Uses List
Top of pageGeneral
- Ritual uses
Human food and beverage
- Beverage base
Materials
- Oils
- Pesticide
- Poisonous to mammals
Medicinal, pharmaceutical
- Traditional/folklore
Ornamental
- Seed trade
Similarities to Other Species/Conditions
Top of pageHosking et al. (2000) have pointed out that A. mexicana, A. ochroleuca, and A. subfusiformis have been confused in the past and at present, and are often incorrectly identified.
Ownbey (1997) differentiates A. ochroleuca from A. mexicana on the basis of differences in flower bud shape and petal colour. A. ochroleuca is recorded as a weed from Australia (Parsons and Cuthbertson, 1992), Ethiopia (Karlsson et al., 2003), India (Ramakrishnan and Gupta, 1972) and South Africa (Milton and Dean, 1998). In Zimbabwe, these two species are viewed as colour forms of one species A. mexicana (Hyde and Wursten, 2002), but Otto and Verloove (2016) cite both as valid species. Chaturvedi et al. (1999) have suggested that A. ochoroleuca can naturally hybridize with A. mexicana, and the hybrid was recognised and described in 2016 by Otto and Verloove.
A. subfusiformis is closely related to A. ochroleuca and is found in Australia (New South Wales and South Australia) (Parsons and Cuthbertson, 1992). It has cream to pale yellow petals, capsule slenderly spindle-shaped and seed approximately 2 mm in diameter.
Other Argemone species that occur in the USA are:
- A. albiflora with white flowers, 10-15 cm in diameter and is a weed of Arkansas, Louisiana, Mississippi and Texas(Brown, 1972).
- A. corymbosa is a weed native to California (Goeden and Ricker, 1985).
- A. intermedia has white or pinkish flowers, 5-8 cm in diameter, densely covered with short yellowish hairs and is a weed from Arizona (Parker, 1972).
- A. polyanthemos has white or lavender flowers, prickles on the lower surface of the leaves and it is a weed of pastures in the Great Plains (Davis, 1993).
- A. squarrosa is a perennial with prickles on both sides of the leaves and is a weed of pastures and rangeland in the Great Plains of the USA (Davis, 1993).
Other Argemone species occurring in California, include A. minuta (Goeden and Ricker, 1985) and A. platyceras (Robbins et al., 1951).
Prevention and Control
Top of pageDue to the variable regulations around (de)registration of pesticides, your national list of registered pesticides or relevant authority should be consulted to determine which products are legally allowed for use in your country when considering chemical control. Pesticides should always be used in a lawful manner, consistent with the product's label.
Eradication
Alemayehu and Desalegn (2016) recommended that the Bureau of Agriculture, other GOs and NGOs of Ethiopia develop mechanisms to eliminate the species from agricultural and grazing lands.
Physical/Mechanical Control
Plants of A. mexicana should be destroyed or removed before they produce seeds. Seedlings are readily controlled by light tillage. Long cultivated fallow or vigorous perennial pastures will control large infestations (Parsons and Cuthbertson, 1992).
Biological Control
The beetles Conotrachelus cf. leucophaeatus and Sirocalodes cf. wickhami are being tested in South Africa as possible biological controls for the species (Westhuizen and Mpedi, 2011).
A biological control programme of A. mexicana and of the closely related A. ochroleuca has been initiated in Australia. This native of Mexico is naturalized in most warm countries of the world in sub-humid as well as semiarid regions. This project sought natural enemies in Mexico and identified several predatory insects including an extremely damaging species of root-breeding and leaf-feeding weevil (CSIRO, 1999; Julien, 2002).
Chemical Control
Herbicides which control A. mexicana include 2,4-D, 2,4-DB, dicamba, diuron, fluroxypyr, hexazinone, isoproturon, karbutilate, MCPA, metribuzin, oxadiazon, picloram and terbutryn.
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Distribution References
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Jeanine Vélez-Gavilán, University of Puerto Rico at Mayagüez
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