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 in 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