prickly poppy, argemone, white thistle, devil's fig -- (any plant of the genus Argemone having large white or yellow flowers and prickly leaves and stems and pods; chiefly of tropical America)
quail bush, quail brush, white thistle, Atriplex lentiformis -- (spiny shrub with silvery-scurfy foliage of alkaline plains of southwestern United States and Mexico)