Euphorbia marginata

Species category

Flower

Common name

snow on the mountain

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

Broadly obovateObovate:
Inverted egg shaped with apical end the broadest.

Size

  • Length 4 mm
  • Width 3 mm
  • Thickness 3 mm

Color

Light brown

Texture

Roughened by an irregular network of coarse lines

Other structures

The hilumHilum:
The scar on the seed coat at the place of its detachment from the seed stalk (funiculus).
, chalazaChalaza:
End of seed opposite the micropyle.
, and rapheRaphe:
A seam or ridge found on seeds.
are well defined.

Identification notes

Seeds generally lack a caruncleCaruncle:
An appendage or outgrowth of the outer integument of the seed, e.g. leafy spurge.
. Surface texture is very rough with pointed elevations.

Noxious weed seed categories

Not listed

AOSA examination list

Not included

Nomenclature

Family

Euphorbiaceae

Valid name

Euphorbia marginata Pursh

Synonyms

Agaloma marginata (Pursh) Á. Löve & D. Löve
Dichrophyllum marginatum (Pursh) Klotzsch & Garcke
Lepadena marginata (Pursh) Nieuwl.

 From Left to Right: 1:  Euphorbia marginata  2.  Euphorbia davidii  3.  Euphorbia esula . Seed surfaces are very rough with pointed elevations.
From Left to Right: 1: Euphorbia marginata 2. Euphorbia davidii 3. Euphorbia esula. Seed surfaces are very rough with pointed elevations.
 Euphorbia marginata.  Seeds are roughened by an irregular network of coarse lines. 
Euphorbia marginata. Seeds are roughened by an irregular network of coarse lines.