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Montana Field Guide

Montana Field Guides

Spiny Cocklebur - Xanthium spinosum
Other Names:  Prickly Burweed, Bathhurst Burr

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Non-native Species

Global Rank: GNR
State Rank: SNA
C-value: 1


Agency Status
USFWS:
USFS:
BLM:


 

External Links

 
General Description
Stems erect, strigose, 30–120 cm with spines at the nodes. Leaf blades lanceolate, 2–8 cm long, deeply pinnately lobed, becoming more entire upward, strigose above canescent beneath. Burs 10–12 mm long, 1-beaked, puberulent, prickly (Lesica et al. 2012. Manual of Montana Vascular Plants. BRIT Press. Fort Worth, TX).

Range Comments
Introduced to most of U.S.; native to S. America. Collected 100 years ago in Ravalli County (Lesica et al. 2012. Manual of Montana Vascular Plants. BRIT Press. Fort Worth, TX).

Observations in Montana Natural Heritage Program Database
Number of Observations: 7

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Relative Density

Recency

 

(Observations spanning multiple months or years are excluded from time charts)



Habitat

Management

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
    Do you know of a citation we're missing?
    • 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.
  • Web Search Engines for Articles on "Spiny Cocklebur"
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Citation for data on this website:
Spiny Cocklebur — Xanthium spinosum.  Montana Field Guide.  .  Retrieved on , from