Annual Prickly Poppy

Annual Prickly Poppy

Argemone polyanthemos (Fedde) G.B. Ownbey

Papaveraceae (Poppy Family)

Mature, flowering plant ▲

Close-up of leaves, seed pods ▲

Seedling ▲

Flower ▲

Annual Prickly Poppy: (pp. 382-383, Weeds of the Great Plains; not in Weeds of the Northeast)

native prairie, range and pasture plant that can be toxic to livestock if grazed
has blue-green, lobed, spiny, waxy leaves and stems
grows 1-4 feet tall
has large white flowers with paper-like petals
not usually a serious weed problem, but an abundance in a grazed area may indicate overgrazing