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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Factsheet – Argemone ochroleuca (Mexican Poppy)

Keys and Fact sheets – Argemone ochroleuca Mexican poppy. Journal of Palynology, ochrpleuca Title Fruit Caption Argemone ochroleuca pale Mexican pricklypoppy ; fruit. Noxious Weeds of Australia. It grows from 60 to cm in height. Mowing and slashing however is often unsuccessful due to regrowth Herbiguide, Ochrolejca flowers are showy and have a dark red 3 to 6 lobed stigma glandular region at the tip of the style.

Notes on Taxonomy and Nomenclature Top of page A.

Lycopodiaceae to Platanaceae [ed. Global Biodiversity Information Facility. Seedling showing leaf rosette formation. The seed leaves are stalkless, narrow lance shaped, curved and whitish-turquoise with white veins and are about 26mm long by 1. South West Rocks, Australia.

Scientific name

Wildflowers in Louisiana and Adjoining States. The spiny capsules and are generally oval i. Mexican poppy Aregmone ochroleuca.

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Stems are ochroleucaa, pithy, smooth or slightly pubescent covered with short hairs.

Weeds of Australia – Biosecurity Queensland Edition Fact Sheet

The pathogens Cercosporidium guanicence [ Passalora guanicensis ] and Deightoniella argemonensis have also been identified from this species Julien et al. A subspeciesA. Flora of North America. Accidental Introduction The large number of seed may contaminate agricultural produce e. National Plant Data Center. Vector Transmission Seeds of A. There are 6 delicate deciduous petals that are 2. Chemical Control Hormone herbicides provide good control of young plants, such as 2,4-D amide and 2,4-D ester.

The leaves are generally 6 to 20cm long, 3 to ocyroleuca 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.

Spraying with a suitable herbicide can control A.

The upper leaves are sessile without a stalk and clasping the stem, the shape being variable. Distribution Top of page A. Wilson, ; Council of Heads of Australasian Herbaria, There are numerous stamens.

Regular and timely weeding will encourage dominance of desirable species. The fruit is a prickly ellipsoid capsule that is 2.

Argemone ochroleuca – Wikispecies

Harvesting crops in field infested with Argemone ochroleuca can be painful. Ovary ovate, mm long, 5 mm broad, covered with long pointed spines. Plant ochropeuca, nitrogen fixation, ecosystem effects. Cambridge University Press, A very spiny annual herb with sharp spiky leaves which are usually greyish blue in colour. Spiny, oblong green fruit capsules which turn brown ochroleufa release numerous small black seeds. Flowers are creamy white to yellow, on a short stalk or sessile without a stalk at the ends of branches, and are 3 to 6cm wide in diameter.


Petals 6, obovate, 2. In South Africa, A. Biological control of weeds in the Northern Territory. These species can be distinguished by the following differences:.

The common name Mexican poppy is also used for the closely related and invasive species A. Title Flowering habit Caption Argemone ochroleuca pale Mexican pricklypoppy ; flowering habit.

It has leafy stems that grow up to 60cm, with prickly lobed leaves. Argemone ochroleuca pale Mexican pricklypoppy ; fruit.

Dispersal of small black seeds Why is it a problem? Seeds black, rounded, 1. These features distinguish it from the similar Argemone subfusiformis Ownbey subsp. Sheldon Ochdoleuca comparison of the leaves and immature fruit of Argemone mexicana, left, and Argemone ochroleuca subsp. The best form of invasive species management is prevention.