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Published In: Species Plantarum 1: 508. 1753. (1 May 1753) (Sp. Pl.) Name publication detailView in BotanicusView in Biodiversity Heritage Library

Project Name Data (Last Modified On 6/2/2011)
Acceptance : Accepted
Project Data     (Last Modified On 6/3/2011)
General/Distribution: About 22 species mostly Mexican; represented by 2 species in West Pakistan.


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Erect, prickly annual herbs, with yellow latex. Leaves pinnatifid-dentate. Flowers terminal, solitary, bright yellow rarely whitish or white, pedunculate. Sepals 2-3, free, valvate, caducous. Petals 4-6, obovate, caducous. Stamens indefinite; filaments filiform; anthers basifixed. Ovary ovate-oblong, unilocular; ovules indefinite, born on 4-7 parietal placentas. Style very short or obscure; stigma radiating, 4-7 lobed; lobes opposite the placentas. Capsule ellipsoid, prickly, dehiscing by 3-6, short valves at the top. Seeds numerous, spherical, pitted with oily endosperm.

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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
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