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White Prickly-poppy - Argemone polyanthemos
Other Names:
Argemone intermedia var. polyanthemos
Undetermined Origin
Global Rank:
G4G5
State Rank:
SNR
(see State Rank Reason below)
C-value:
Agency Status
USFWS:
USFS:
BLM:
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.
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 et al. 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).
Observations in Montana Natural Heritage Program Database
Number of Observations: 14
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Relative Density
Recency
(Observations spanning multiple months or years are excluded from time charts)
Habitat
References
- Literature Cited AboveLegend:
View Online Publication- Lesica, P., M.T. Lavin, and P.F. Stickney. 2012. Manual of Montana Vascular Plants. Fort Worth, TX: BRIT Press. viii + 771 p.
- Additional ReferencesLegend: View Online Publication
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Lesica, P., M.T. Lavin, and P.F. Stickney. 2022. Manual of Montana Vascular Plants, Second Edition. Fort Worth, TX: BRIT Press. viii + 779 p.
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