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Montana Field Guide

Montana Field Guides

White Prickly-poppy - Argemone polyanthemos
Other Names:  Argemone intermedia var. polyanthemos

Undetermined Origin

Global Rank: G4G5
State Rank: SNA
* (see State Rank Reason below)

Agency Status
MNPS Threat Rank:

External Links

State Rank Reason (see State Rank above)
Native to the Great Plains though it is unclear whether it was native to Montana or has been introduced.
  • Details on Status Ranking and Review
    White Prickly-poppy (Argemone polyanthemos) Conservation Status Review
    Review Date =
General Description
Taprooted annual or biennial. Stems 40–80 cm with prickly foliage. Leaves oblanceolate, to 10 cm long, glaucous, deeply pinnately lobed with spiny-toothed margins, the upper clasping. Inflorescence bracteate cymose. Flowers 5–10 cm across; sepals 3, prickly; petals 6, white; stamens numerous with yellow filaments. Capsules ellipsoid, ca. 2 cm high, yellow-spiny (Lesica 2012. Manual of Montana Vascular Plants. BRIT Press. Fort Worth, TX).

Range Comments
UT, MT, and ND south to NM and TX (Kiger 1997. Fl. N. Amer. Vol. 3).


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Citation for data on this website:
White Prickly-poppy — Argemone polyanthemos.  Montana Field Guide.  .  Retrieved on , from