Argemone mexicana L. (Bahamas (I), Turks & Caicos Isl. (I), Cayman Isl., Cuba (I), Hispaniola (I), Jamaica (I), Puerto Rico, Virgin Isl. (Guana, St. Croix, St. John, St. Thomas, Tortola, Virgin Gorda), Lesser Antilles (Anguilla, Antigua, Barbados, Barbuda, Dominica, Grenada, Grenadines, Guadeloupe, Martinique, Montserrat, Saba, St. Barthelemy, St. Eustatius, St. Kitts, St. Lucia, St. Martin, St. Vincent), Aruba, Bonaire, Curacao, Isla Margarita, Trinidad & Tobago (I), Bermuda (I), Panama, Nicaragua, Mexico (Aguascalientes, Baja California Norte, Baja California Sur, Campeche, Chiapas, Chihuahua, Coahuila, Colima, Durango, Guanajuato, Guerrero, Hidalgo, Jalisco, Mexico State, Michoacan, Morelos, Nayarit, Nuevo Leon, Oaxaca, Puebla, Queretaro, Quintana Roo, San Luis Potosi, Sinaloa, Sonora, Tabasco, Tamaulipas, Tlaxcala, Veracruz, Yucatan, Zacatecas), Galapagos Isl., Costa Rica, Peru, Belize, Guatemala, Honduras, El Salvador, Peru, Surinam (I), French Guiana (I), Ecuador (I), Brazil (I), Bolivia (I), Venezuela (I), Colombia (I), USA (I) (Alabama (I), Arkansas (I), Connecticut (I), District of Columbia (I), Delaware (I), S-Florida, Georgia (I), Iowa (I), Illinois (I), Indiana (I), Kansas (I), Louisiana (I), Massachusetts (I), Maryland (I), Michigan (I), Missouri (I), Mississippi (I), North Carolina (I), Nebraska (I), New Jersey (I), New York (I), Ohio (I), Pennsylvania (I), South Carolina (I), Tennessee (I), Texas (I), Virginia (I), Vermont (I)), Canada (Manitoba (I), Ontario (I)), Portugal (I), France (I), C-Europe (I), S-Europe, Italy (I), Java (I), peninsular Malaysia (I), Lesser Sunda Isl. (I), Sulawesi (I), Moluccas (I) (Ternate (I), Aru Isl. (I), Kei Isl. (I), Ceram (I)), Philippines (I), Australia (I) (South Australia (I), Western Australia (I), Queensland (I), New South Wales (I), Victoria (I)), South Africa (I), Swaziland (I), Lesotho (I), Botswana (I), Zambia (I), Zimbabwe (I), Mozambique (I), Guinea-Bissau (I), Guinea (I), Benin (I), Togo (I), Burkina Faso (I), Seychelles (I), Somalia (I), Socotra (I), Sao Tome (I), Madagascar (I), Mauritania (I), Angola (I), Sudan (I), New Caledonia (I), Nepean Isl. (I), Fiji (I), Norfolk Isl. (I), Southern Marianas (I) (Tinian (I), Guam (I)), Niue (I), Mauritius (I), La Runion (I), Rodrigues (I), Egypt (I) (Nile Delta (I), Nile Valley (I)), Israel (I) (coastal W-Israel (I)), Lebanon (I) (C-Lebanon (I), coastal W-Lebanon (I)), Saudi Arabia (I) (Hejaz (I)), Yemen (I) (Aden Desert (I), SW-Yemen (I), W-Yemen (I)), Oman (I), Bahrain (I), Pakistan (I), Jammu & Kashmir (I), Madeira (I) (Madeira Isl. (I)), Canary Isl. (I) (Gran Canaria (I), Tenerife (I), La Palma Isl. (I)), Cape Verde Isl. (I) (Santo Antao Isl. (I), Sao Vicente Isl. (I), Santa Luzia Isl. (I), Ilha de Sao Nicolau (I), Sal Isl. (I), Ilha da Boa Vista (I), Ilha de Maio (I), Ilha de Sao Tiago (I), Fogo Isl. (I), Ilha Brava (I)), Hawaii (I) (Kauai (I), Oahu (I), Maui (I)), Nicobar Isl. (I) (North Nicobar Isl. (I), Great Nicobar Isl. (I), Little Nicobar Isl. (I)), Sikkim (I), Myanmar [Burma] (I), Vietnam (I), India (I), Sri Lanka (I), Nepal (I), Lakshadweep Isl. (Laccadives) (I), Maldives (I), Bangladesh (I), China (I) (Fujian (I), Guangdong (I), Yunnan (I)), Taiwan (I), Georgia [Caucasus] (I), Taiwan (I), Ryukyu Isl. (I), Morocco (I) as per Catalogue of Life)


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Argemone ochroleuca Sweet (USA (Arizona), Mexico (Aguascalientes, Baja California Norte, Baja California Sur, Chiapas, Chihuahua, Coahuila, Colima, Ciudad de Mexico, Durango, Guanajuato, Guerrero, Hidalgo, Jalisco, Mexico State, Michoacan, Morelos, Nayarit, Nuevo Leon, Oaxaca, Puebla, Queretaro, Quintana Roo, San Luis Potosi, Sinaloa, Sonora, Tamaulipas, Tlaxcala, Veracruz, Zacatecas), Revillagigedos Isl. (Isla Socorro), Saudi Arabia (I), Yemen (I), pantropical (I), India (I), Madeira (I) (Madeira Isl. (I)), Canary Isl. (I) (Gran Canaria (I), Tenerife (I)), Australia (I) (throughout), Botswana (I), Mozambique (I), Namibia (I), South Africa (I) (widespread), Lesotho (I), Swaziland (I) as per Catalogue of Life


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1 Flowers yellow; stigma shallowly dissected; style absent in fruit   Argemone mexicana
+ Flowers white turning pale-yellowish with age; stigma deeply dissected; style 1-2 mm long in fruit   Argemone ochroleuca
We can distinguish Argemone ochroleuca from A. mexicana by small height, pale yellow flowers and deeply dissected stigma…!!!
A weed of waste places, Argemone ochroleuca is less common than A. mexicana, differentiated by low habit (usually less than 40 cm tall), poorly brached, smaller narrower leaves, white flowers turning pale yellow, deeply dissected stigma and distinct 1-2 mm long style.

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