Swaziland's Alien Plants Database

Argemone mexicana L. forma mexicana (Argemone mexicana) PAPAVERACEAE Mexican pricklepoppy, Mexican poppy, devil's fig, golden thistle of Peru, Mexican thistle, prickly poppy, white thistle, yellow poppy, umJelemani Invasive, Problem species Origin: South America Growth Form: Herb Plant Description: Plant: Annual, very spiny herb up to 0.9 m high; stems exude a yellow sap when cut. Leaves: Bluish-green, with prominent white veins, spiny; up to 150 mm x 60 mm. Flowers: Bright yellow, September–January(–all year). Fruit: Spiny capsules, ovoid , green turning brown, up to 50 mm long, splitting into five lobes and releasing numerous small black seeds. Key Features: Control: Comments: More information: Weeds & Invasive Plants Home Page NRCS Plants Database Photo - flowers/leaves W.L. Wagner @ USDA-NRCS PLANTS Database Illustration USDA-NRCS PLANTS Database / Britton, N.L., and A. Brown. 1913. Illustrated flora of the northern states and Canada. Photo - flowers/leaves Clarence A. Rechenthin @ USDA-NRCS PLANTS Database

KEY   Confirmed (herbarium specimen)   Visual record   Suspected Click on map grid square to view record information for each grid square.

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