white thistle

Noun

• spiny shrub with silvery-scurfy foliage of alkaline plains of southwestern United States and Mexico

• any plant of the genus Argemone having large white or yellow flowers and prickly leaves and stems and pods; chiefly of tropical America

Related words

• Synonyms: 
  quail bush , quail brush , Atriplex lentiformis , prickly poppy , argemone , devil's fig