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Brassica rapa subsp. oleifera

Species category

Agricultural

Common name

bird rape, canola, colza, field mustard, Polish canola, turnip rape, wild turnip

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

Globose

Size

  • Length: 2 mm
  • Width: 2 mm
  • Thickness: 2 mm

Color

Brown

Texture

Reticulum with stipplesStipples:
Numerous small dots or specks.
 covering interspaces and reticulum network.

Other structures

HilumHilum:
The scar on the seed coat at the place of its detachment from the seed stalk (funiculus).
 is slightly raised above the seed surface.

Identification notes

Seeds have well-developed reticulum with stipplesStipples:
Numerous small dots or specks.
 covering interspaces and reticulum ridges.

Comments

Seed of this species is considered noxious only as a contaminant. Check individual states for interpretations.

Noxious weed seed categories

State Noxious Weed: Alabama, Arizona, Connecticut, Florida, Georgia, Illinois, Kansas, Louisiana, Maine, Massachusetts, Mississippi, Nebraska, New Hampshire, North Carolina, Oklahoma, Rhode Island, South Carolina, Tennessee, Texas, Virginia, Vermont

AOSA examination list

Not included

Nomenclature

Family

Brassicaceae

Valid name

Brassica rapa L. subsp. oleifera (DC.) Metzg.

Synonyms

Brassica campestris L.
Brassica campestris L. subsp. campestris
Brassica campestris L. unranked oleifera DC., nom. inval.
Brassica campestris L. var. campestris
Brassica rapa L. subsp. campestris (L.) A.R. Clapham
Brassica rapa L. subsp. sylvestris Janch., nom. nud.
Brassica rapa L. var. sylvestris Purchas & Ley

Brassica rapa subsp. oleifera. Seeds with a reticulum with stipples covering interspaces and a reticulum network.
Brassica rapa subsp. oleifera. Seeds with a reticulum with stipples covering interspaces and a reticulum network.