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Published In: Species Plantarum 1: 508–509. 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)
Flower/Fruit: Fl.Per. February-May.
Type: Type: From Mexico, Jamaica, Carribies & S. Europe, Herb. Linn. no. 670/1 (LINN).
Distribution: Distribution: Native of West Indies and Mexoico, but naturalized in most of the warm countries of the world as a weed.
Comment/Acknowledgements: This yellow juice of the plant is medicinally used in dropsy, jaundice and cutaneous affection. The seeds are said to be poisonous and have narcotic properties and yields a fixed oil which has been in use amongst West Indian practitioners as an aperient. It exercises a soothing influence when applied externally in headache and also in herpetic and other forms of skin disease. A pale yellow clear limpid oil, obtained from the seeds, is used in lamps and medicinally in ulcers and erudtions.
Photo: Argemone mexicana L. (Photo)
Map Location: D-8 Punjab: Lahore Distt.: Changa-Manga, herb, 30 cm tall, fl. yellow, S. Abedin 7551 (KUH); C-7 Rawalpindi Distt.: Company Bagh, G. D. Samson s.n. 2.4.1937 (RAW); near Dairy Farm, Mohindar Nath 84 (RAW); Liaquat Garden Rawalpindi, Siddiqi, 386 (RAW); C-8 Azad Kashmir; Kotli, 14.8.1953 E. Nasir & R. R. Stewart s.n. (RAW). G-5 Hyderabad Dist.: 30 cm tall, fl. yellow Sultanul Abedin 3948 (KUH); Hyderabad Distt.: Tandojam College, 22.10.1957 Mushtaq Hussain, s.n. (KUH); Dadu Distt.: Mancher Lake, Shah Hassan, growing in clay loam, 70 cm tall, Farooqi & Sultanul Abedin 381 (KUH); G-4 Karachi Distt.: Malir 21-11-1958 Shamim Ahktar s.n. (KUH); Malir, 21.3.1958, Asif Zaidi s.n. (KUH); Malir in cultivated field 3.2.1967, Y. Nasir s.n. (KUH); University Campus, 9.1.1964, Raffia Majeed s.n. (KUH); University Campus, 24.11.1964 Asif Mohammad Khan s.n. (KUH); Malir, 14.2.1963 Fahimuddin s.n. (KUH); University Campus, 8.7.1959, Saeed Haider s.n. (KUH); Landhi, A. S. Bhatti 1961 (KUH); Jamgoth, Malir, in cultivated field, fl. yellow, 11.2.1969, Saida Quraishi et al, s.n. (KUH); Darsano Chano, fl. yellow, Sultanul Abedin & A. Ghafoor 1319 (KUH).


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A Prickly glabrous annual herb, 30-125 cm tall, branched. Leaves alternate, elliptic-oblong, pinnatifid, semiamplexicaul, sinuate-lobulated; variegated green and white, 5-20 cm long, 2-8 cm broad, ultimate segments, dentate, prickly on the margin, midrib and the veins beneath; Flowers sessile, 3-8 cm in diam., subtended by 2-3 foliaceous bracts. Sepals 8-12 mm long, 5-7 mm broad, with an acute, terete horn below the apex, very sparsely prickly outside, concave, imbricate caducous. Petals 4-6, obovate, 2.5-3.5 cm long, (1.5-)2-2.5 cm broad, narrowed below, bright yellow, imbricate, more or less crumpled in bud. Stamens indefinite, 8-12 mm long; anther c. 2 mm long, curved after flowering. Ovary ovate, 8-10 mm long, 3-5 mm broad covered with long soft spines; stigma red, 3-6 lobed; lobes usually broad. Capsule, oblong or elliptic-oblong, 2.5-4 cm long, 1.2-2 cm broad, with rounded ribs, covered with sharp erect prickles; valves 3-6. Seeds many, blackish brown to brown, ± rounded, 1.5-2 mm in diam, with fine, con¬spicuous tuberculae.
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