E-Flora BC: Electronic Atlas of the Flora of British Columbia

Chamaesyce maculata (L.) Small
milk spurge (spotted sandmat)
Euphorbiaceae (Spurge family)

Introduction to Vascular Plants

© Rosemary Taylor  Email the photographer   (Photo ID #60603)

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Distribution of Chamaesyce maculata
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Species Information

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Annual herb from a fibrous root; stems prostrate, softly hairy to bristly, with milky juice, 10-40 cm long.
Stem leaves opposite, obliquely oblong, 5-15 mm, long, often with a deep red central spot, somewhat toothed, hairy beneath, glabrous above; stipules linear, 0.5 mm long.
Inflorescence of several involucres solitary in the leaf-axils; involucres 1 mm long, stiffly-hairy, triangular-shaped; glands 4, yellow, conspicuous membranous appendages kidney-shaped, white to deep pink.
Capsules, 1.5 mm long, hairy; seeds 1 mm long, pinkish, sticky when wet, ridged and cross-corrugated.

Source: The Illustrated Flora of British Columbia

Habitat / Range

Dry disturbed sites and waste places in the lowland zone; rare in SW and SC BC; introduced from S U.S.

Source: The Illustrated Flora of British Columbia


The climate type for this species, as reported in the: "British Columbia plant species codes and selected attributes. Version 6 Database" (Meidinger et al. 2008), is not evaluated, unknown or variable.

Synonyms and Alternate Names

Chamaesyce mathewsii Small
Chamaesyce preslii (Guss.) Arthur
Chamaesyce supina (Raf.) H. Hara
Chamaesyce tracyi Small
Euphorbia maculata auct. non L.
Euphorbia maculata L.
Euphorbia nutans Lag.
Euphorbia preslii Guss.
Euphorbia supina Raf.

Taxonomic and Nomenclatural Links

Additional Photo Sources

General References