Search Field Guide
Advanced Search
MT Gov Logo
Montana Field Guide

Montana Field Guides

Spotted Spurge - Euphorbia supina
Other Names:  Spotted Sandmat, Chamaesyce maculata, Euphorbia maculata, Chamaesyce supina

Non-native Species

Global Rank: G5?
State Rank: SNA
C-value: 1

Agency Status


External Links

General Description
Annual. Stems prostrate, 5–20 cm. Herbage villous. Leaves opposite, oblong, acute, asymmetrical at the base, serrulate toward the tip, 5–15 mm long, often with a dark spot on the upper surface. Inflorescence: solitary cyathia in leaf axils. Cyathia ca. 1 mm long; glands with white or pink margins. Capsule 1–2 mm long, hairy (Lesica et al. 2012. Manual of Montana Vascular Plants. BRIT Press. Fort Worth, TX).

Species Range
Montana Range Range Descriptions


Range Comments
In Sanders County; introduced sporadically to western U.S. but native to Eastern North America (Lesica et al. 2012. Manual of Montana Vascular Plants. BRIT Press. Fort Worth, TX).

Observations in Montana Natural Heritage Program Database
Number of Observations: 11

(Click on the following maps and charts to see full sized version) Map Help and Descriptions
Relative Density



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



  • 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?
    • Rosgaard, A.I., Jr. 1981. Ecology of the mule deer associated with the Brackett Creek winter range in the Bridger Mountains, Montana. M.Sc. Thesis. Bozeman, MT: Montana State University. 76 p.
  • Web Search Engines for Articles on "Spotted Spurge"
Login Logout
Citation for data on this website:
Spotted Spurge — Euphorbia supina.  Montana Field Guide.  .  Retrieved on , from