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Argemone polyanthemos (Fedde) G.B. Ownbey
Annual pricklepoppy, Bluestem pricklepoppy, Bluestem prickly poppy, Crested pricklypoppy, Pricklypoppy, Thistle poppy, White prickly poppy, White pricklypoppy
Synonym(s): Argemone intermedia, Argemone intermedia var. polyanthemos, Argemone platyceras
USDA Symbol: arpo2
USDA Native Status: L48 (N)
A branched, pale blue-green, leafy plant with white flowers, yellow sap, and slender yellow prickles all over.
Argema, in Greek, means cataract of the eye, for which species of this genus were supposedly a remedy. There are several species in the West, all similar, a few with yellow, pinkish, or lavender petals. The herbage of this poisonous plant is so prickly and distasteful that livestock avoid it.
Plant CharacteristicsDuration: Annual Habit: Herb Root Type: Tap Leaf Complexity: Simple Breeding System:
Flowers Bisexual Leaf:
Flowers 5 inches.
Fruit: Size Class:
Bloom InformationBloom Color: White
Bloom Time: Apr , May , Jun , Jul , Aug , Sep , Oct
, WY Native Distribution:
South-central New Mexico and northern half of Texas; north to South Dakota and eastern Wyoming. Native Habitat:
Prairie, Plains, Meadows, Pastures, Savannahs
Growing ConditionsWater Use: Low
Light Requirement: Sun
Soil Moisture: Dry
CaCO3 Tolerance: High
Soil Description: Gravelly, Sandy, Sandy Loam, Medium Loam, Clay Loam, Clay
BenefitUse Ornamental: Showy, Blooms ornamental, Long-blooming
Use Wildlife: Nectar-Bees, Nectar-Butterflies, Nectar-beetles
Warning: All parts of the plants are poisonous (including the seeds) if ingested. The spines contain a substance irritating to the skin. Sensitivity to a toxin varies with a personís age, weight, physical condition, and individual susceptibility. Children are most vulnerable because of their curiosity and small size. Toxicity can vary in a plant according to season, the plantís different parts, and its stage of growth; and plants can absorb toxic substances, such as herbicides, pesticides, and pollutants from the water, air, and soil.
Conspicuous Flowers: yes
PropagationPropagation Material: Seeds
Record Last Modified: 2007-08-19
Research By: TWC Staff