BLUESTEM PRICKLEPOPPY, Argemone
intermedia Sweet. 1, plant in flower; 2, root system;
3, seed pod. Annual, reproducing by seed. Stems stout,
prickly, not branched, 1 to 2 feet (30 to 60 cm) high. Leaves bluish-green
with spiny margins and prickly surfaces, alternate, clasping the stern.
Sap in stems and leaves orange-colored. Flowers large, white, 2
to 3 inches (5 to 7.5 cm) across, petals dropping off quickly. Seed
pod oblong, about I inch (2.5 cm) in length, spiny, containing many
seeds. Seeds globular, about 1/16 inch (1.5 mm) in diameter, dark
brown, rough with narrow ridge along one side, short pointed tip on one
end. Found on prairies and uncultivated areas. Plant is poisonous
to cattle but they don't eat it because of its prickliness.