Rubus vulgaris

Species category

Shrub or Tree

Common name

blackberry

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

D-shaped 

Size

  • Length 2.2–3 mm 
  • Width 1.5–2 mm 
  • Thickness 0.8–1 mm 

Color

Brown

Texture

Reticulate

Other structures

HilumHilum:
The scar on the seed coat at the place of its detachment from the seed stalk (funiculus).
is on straight margin.

Identification notes

Seeds often covered with dried fruitFruit:
A mature ovary and any associated parts.
material.

Noxious weed seed categories

Not listed

AOSA examination list

Not included

Nomenclature

Family

Rosaceae

Valid name

Rubus vulgaris Weihe & Nees

 Rubus vulgaris.  Seed covered in dried fruit material. Photo by Julia Scher, USDA-APHIS-PPQ.
Rubus vulgaris. Seed covered in dried fruit material. Photo by Julia Scher, USDA-APHIS-PPQ.
 Rubus vulgaris.  True seeds with reticulations. Photo by Julia Scher, USDA-APHIS-PPQ.
Rubus vulgaris. True seeds with reticulations. Photo by Julia Scher, USDA-APHIS-PPQ.