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Rubus allegheniensis

Species category

Weed

Common name

Allegheny 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 2–2.2 mm 
  • Width 1.5–1.6 mm 
  • Thickness 0.7–1 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

Seed 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 allegheniensis Porter

Synonyms

Rubus allegheniensis Porter var. allegheniensis
Rubus allegheniensis Porter var. populifolius Fernald
Rubus allegheniensis Porter var. plausus L.H. Bailey
Rubus attractus L.H. Bailey
Rubus auroralis L.H. Bailey
Rubus fissidens L.H. Bailey
Rubus longissimus L.H. Bailey
Rubus nigrobaccus L.H. Bailey
Rubus nuperus L.H. Bailey
Rubus pennus L.H. Bailey
Rubus rappii L.H. Bailey
Rubus separ L.H. Bailey

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