Brassica juncea

Species category

Vegetable 

Common name

brown mustard, India mustard

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: 2mm
  • Thickness: 2 mm

Color

Brown

Texture

Reticulum is smoother; stipplesStipples:
Numerous small dots or specks.
are small and only on the inner spaces.

Other structures

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

Identification notes

Seeds are spherical or somewhat elongate spherical. Reticulum of fine, distinct lines and large, shallow interspaces. StipplesStipples:
Numerous small dots or specks.
are present in interspaces but not on the reticulum. StipplesStipples:
Numerous small dots or specks.
shiny. Color is brown in most types of Brassica juncea.

Comments

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

Noxious weed seed categories

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

AOSA examination list

Included

Nomenclature

Family

Brassicaceae

Valid name

Brassica juncea (L.) Czern.

Synonyms

Brassica integrifolia (Vahl) O.E.Schulz, non Rupr.
Brassica integrifolia Rupr.
Brassica japonica Thunb.
Brassica juncea (L.) Czern. var. crispifolia L.H. Bailey
Brassica juncea (L.) Czern. var. japonica (Thunb.) L.H. Bailey
Brassica willdenowii Boiss.
Sinapis juncea L.

 Brassica juncea.  Seeds with small stipples.
Brassica juncea. Seeds with small stipples.
 Brassica juncea.  Seeds with small stipples.
Brassica juncea. Seeds with small stipples.
From Left to Right: 1.  Brassica nigra  2.  Sinapis arvensis  3.  Brassica juncea . Brown seeds with small stipples.
From Left to Right: 1. Brassica nigra 2. Sinapis arvensis 3. Brassica juncea. Brown seeds with small stipples.
From Left to Right: 1.  Brassica nigra  2.  Sinapis arvensis  3.  Brassica juncea  4.  Brassica rapa subsp. campestris.  Spherical or elongate seeds.
From Left to Right: 1. Brassica nigra 2. Sinapis arvensis 3. Brassica juncea 4. Brassica rapa subsp. campestris. Spherical or elongate seeds.