Family - Indian Society of Weed Science

Habit :
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An erect prickly annual herb.
Up to 1.2 m tall with yellow sap.
Argemone mexicana L.
Common Name : Mexican prickly poppy
Family : Papavaraceae
Sessile, with slightly incised undulated
margins and white veins, spiny on margins,
midrib and veins beneath.
Yellow, 2.5-7.5 cm in diameter, with 4-6 petals.
Capsules 2-4 cm long, elliptic or oblong,
prickly, rarely unarmed.
Numerous, small, round, blackish-brown,
deeply reticulate and pitted.
Weed ID Manual 33