prickly poppy

(noun) any plant of the genus Argemone having large white or yellow flowers and prickly leaves and stems and pods; chiefly of tropical America. Synonyms: prickly poppy, argemone, white thistle, devil's fig.

(noun) annual Old World poppy with orange-red flowers and bristly fruit. Synonyms: prickly poppy, Papaver argemone.