Euphorbia maculata L.

Family: Euphorbiaceae

Pertinent Synonyms & Notes (particularly those used in California; go to GRIN for other synonyms)

Chamaesyce maculata (L.) Small

Pertinent Common Names (particularly those used in California; go to GRIN for other common names)

spotted spurge

Primary Disseminule Type


Description (diagnostics are in brown)

Fruit a capsule, ovoid, three-lobed, three-chambered (one seed per chamber), 1–1.5 mm long, strigose, keels sharp.

Seed ovoid to oblong in outline, 4-sided, not compressed, truncate at chalazal end, 0.7–1.2 mm long x 0.4–1 mm wide. Surface semiglossy (sparkly under magnification), glabrous, cobblestone-like to minutely pitted (seen under magnification), whitish-gray to light brown, rugulose (typically with rounded transverse wrinkles). Caruncle absent. A prominent seam (raphe) on the ventral side connects the hilum to the chalazal area.

Hilum ± round grading into the raphe, sometimes with attached funicular remnant.

Similar Species

Similar Species Comparison Chart

Risk Assessment (codes in yellow or red indicate cause for concern; assessments are current as of mid-2011; click AUQP, NZBORIC, or NZBPI for access to the most recent versions of these databases and possible assessment changes)