Argemone ochroleuca Sweet subsp. ochroleuca (Mexican poppy) is widespread throughout NSW, it has cream to pale yellow petals; seeds approximately. Argemone mexicana subsp. ochroleuca (Sweet) Schwarzb., Pl. Syst. Evol. (3- 4): , comb. inval. Argemone mexicana var. Abstract. The effects of 2 concentrations (15 and 30%) of ethanolic Argemone ochroleuca Sweet (Papaveraceae) extracts were determined on the feeding.

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Capsule oblong, cm long, 1. Scientific Name Argemone ochroleuca Synonyms Argemone mexicana L Common Names Mexican poppy, prickly poppy, devil’s fig, golden thistle of Peru, biniguy thistle, white thistle, yellow poppy, Mexican thistle, Mexican prickle poppy Family Papaveraceae Origin Native of Central America Mexico Top Habit A glaucous blue-green erect single to several wrgemone annual with yellow sap, reproducing only by seed and with a central taproot.

It is most comm Grey or bluish-green spiny pchroleuca with prominent white veins. Phylogeny of prickly poppies, Argemone Papaveraceaeand the evolution of morphological and alkaloid characters based on ITS nrDNA sequence variation.

African Entomology, 19 2: The World’s Worst Weeds. Ownbey differentiates it from A.


Weeds of Australia – Biosecurity Queensland Edition Fact Sheet

Gareth Bain – photo in public domain. The stems grow 30 to cm high, with scattered stiff yellow prickles. All parts of the plant are toxic to animals and man. Natural enemy surveys in Mexico found 23 different species of insect on A.

Sheldon Navie infestation of young plants on a washed-out creekbank Photo: The phenological stages of A. Noxious Weeds of Australia. The seeds are numerous dark brown or black and globular and are about 1.

Council of Heads of Australasian Herbaria, It often occurs as dense stands in sandy stream beds and alluvial flats associated with intermittent inland streams. Alien species in Hawaii. A complete guide to declared weeds and invaders in South Africa.

A glaucous blue-green erect single to several stemmed annual with yellow sap, reproducing only by seed and with a central taproot. The leaves are generally ocheoleuca to 20cm long, 3 to 8cm wide, deeply divided into 7 to 11 coarse irregular lobes, covered with a powdery bloom ; the upper surface of the leaf has paler stripes along the veins.

Argemone ochroleuca – Wikispecies

It has leafy stems that grow up to 60cm, with prickly lobed leaves. However, the distribution of Argemone ochroleuca subsp. Biological invasion by Myrica faya in Hawaii: These species can be distinguished by the following differences:.


It is also reported to have some limited value as an ornamental. Distribution Table Top of page The distribution in this summary table is based on all the information available. Also naturalised in many other parts of the world e. Physiology and Phenology A. Management of grazing levels is likely to reduce susceptibility to A.

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In a recent survey of the riparian vegetation in the gulf region in north-western Queensland, Mexican poppy Argemone ochroleuca subsp. A glaucous blue-green erect single to several stemmed annual with yellow sap, reproducing only by seed and with a central taproot.

Journal of Economic and Taxonomic Botany, 26 1: Dicotyledonae Summary of Invasiveness A. Vector Transmission Seeds of A. Summary of Invasiveness Top of page A.

Alien weeds and invasive plants: Seeds may also adhere to machinery and boots for example and disperse locally.