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Montana Field Guide

Montana Field Guides

Geyer's Spurge - Euphorbia geyeri
Other Names:  Chamaesyce geyeri

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Undetermined Origin

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


Agency Status
USFWS:
USFS:
BLM:


 

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General Description
Glabrous annual. Stems prostrate, 5–45 cm. Leaves opposite, oblong-ovate, obtuse to emarginate at the tip, rounded at the base, entire, 4–12 mm long. Inflorescence: solitary cyathia in leaf axils. Cyathia 1–1.5 mm long; glands with white to reddish margins. Capsule 1–2 mm long; seeds smooth (Lesica et al. 2012. Manual of Montana Vascular Plants. BRIT Press. Fort Worth, TX).

Range Comments
MT to WI, south to NM, TX. Reported for Custer 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: 5

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Relative Density

Recency

 

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



Habitat
Sandy soil of grasslands, sagebrush steppe; plains (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.
    • Stein, G. 2011. Euphorbia 'flowers', an introduction to the amazing Cyathia. https://davesgarden.com/guides/articles/view/3208
  • Web Search Engines for Articles on "Geyer's Spurge"
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Citation for data on this website:
Geyer's Spurge — Euphorbia geyeri.  Montana Field Guide.  .  Retrieved on , from