Rubus rosaceus

Species category

Shrub or Tree

Common name

rose 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 2.1–2.8 mm
  • Width 1.6–2.4 mm
  • Thickness 1–1.4 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 rosaceus Weihe & Nees

Synonyms

 Rubus rosaceus.  True seeds that are often covered with dried fruit material. Photo by Julia Scher, USDA-APHIS-PPQ.
Rubus rosaceus. True seeds that are often covered with dried fruit material. Photo by Julia Scher, USDA-APHIS-PPQ.