Chamaesyce maculata

Species category

Weed

Common name

spotted sandmat

Diagnostic characters

Planting unit

True seedTrue seed:
A mature fertilized ovule consisting of an embryo, with or without and external food reserve (e.g., endosperm) enclosed by the testa.

Shape

Three-sided obovateObovate:
Inverted egg shaped with apical end the broadest.

Size

  • Length: 1 mm
  • Width: 0.5 mm
  • Thickness: 0.5 mm

Color

Gray

Texture

Very small reticulations

Other structures

RapheRaphe:
A seam or ridge found on seeds.
is present, and there are large lateral waves on the three sides.

Identification notes

Seeds are relatively small with a three-sided cross section. The sides are covered with large lateral waves.

Noxious weed seed categories

Not listed

AOSA examination list

Included

Nomenclature

Family

Euphorbiaceae

Valid name

Chamaesyce maculata (L.) Small

Synonyms

Chamaesyce mathewsii Small
Chamaesyce supina (Raf.) H. Hara
Chamaesyce tracyi Small
Euphorbia maculata L.
Euphorbia rayturneri V.W. Steinm. & Jercinovic
Euphorbia supina Raf.

 Chamaesyce maculata.  Seeds are covered with large lateral waves.
Chamaesyce maculata. Seeds are covered with large lateral waves.
 Chamaesyce maculata.  Looking down on the hilar end of two seeds. Photo courtesy of USDA-APHIS-PPQ.
Chamaesyce maculata. Looking down on the hilar end of two seeds. Photo courtesy of USDA-APHIS-PPQ.