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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

Agency Status
USFWS:
USFS:
BLM:
MNPS Threat Rank:
C-value: 1

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 2012. Manual of Montana Vascular Plants. BRIT Press. Fort Worth, TX).

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

Observations in Montana Natural Heritage Program Database
Number of Observations: 2

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Relative Density

Recency

 

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



Habitat

References
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Citation for data on this website:
Spotted Spurge — Euphorbia supina.  Montana Field Guide.  .  Retrieved on , from