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Montana Field Guide

Montana Field Guides

Horned Spurge - Euphorbia brachycera
Other Names:  Euphorbia robusta

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Native Species

Global Rank: G5
State Rank: SNR
C-value:


Agency Status
USFWS:
USFS:
BLM:


 

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General Description
Small perennial from a branched caudex. Stems erect, 8–20 cm, simple. Herbage glabrous to puberulent (Carbon Co.). Leaves alternate, ovate with acute tips, entire, 6–15 mm long. Inflorescence a dichotomously branched umbel with leaf-like bracts. Cyathia 2–3 mm long, glands with yellow to red, lunate appendages. Capsule 3–5 mm long, papillose (Lesica et al. 2012. Manual of Montana Vascular Plants. BRIT Press. Fort Worth, TX).

Range Comments
MT to MN south to AZ and NM (Lesica et al. 2012. Manual of Montana Vascular Plants. BRIT Press. Fort Worth, TX).

Observations in Montana Natural Heritage Program Database
Number of Observations: 53

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Relative Density

Recency

 

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



Habitat
Usually sandy or gravelly soil of grasslands, sagebrush steppe, woodlands; plains, valleys (Lesica et al. 2012. Manual of Montana Vascular Plants. BRIT Press. Fort Worth, TX).


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.
    • Quire, R.L. 2013. The sagebrush steppe of Montana and southeastern Idaho shows evidence of high native plant diversity, stability, and resistance to the detrimental effects of nonnative plant species. M.Sc. Thesis. Bozeman, MT: Montana State University. 124 p.
    • Stein, G. 2011. Euphorbia 'flowers', an introduction to the amazing Cyathia. https://davesgarden.com/guides/articles/view/3208
  • Web Search Engines for Articles on "Horned Spurge"
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Citation for data on this website:
Horned Spurge — Euphorbia brachycera.  Montana Field Guide.  .  Retrieved on , from