Brassica rapa subsp. chinensis

Species category

Vegetable

Common name

bok-choy, celery cabbage, celery 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: 2 mm
  • Thickness: 2 mm

Color

Reddish-brown

Texture

Reticulum and stipple network present.

Other structures

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

Identification notes

Seeds are spherical with reticulum made of broad ridges and stipplesStipples:
Numerous small dots or specks.
in interspaces, which continue on and over the reticulum ridges. Color light brown to reddish.

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

AOSA examination list

Not included

Nomenclature

Family

Brassicaceae

Valid name

Brassica rapa L. subsp. chinensis (L.) Hanelt

Synonyms

Brassica campestris L. subsp. chinensis (L.) Makino
Brassica chinensis L. subsp. chinensis
Brassica chinensis L. subsp. utilis M. Tsen & S.H. Lee
Brassica oleracea L. var. chinensis (L.) Prain
Brassica rapa L. subsp. chinensis (L.) Hanelt var. rosularis M. Tsen & S.H. Lee
Brassica rapa L. var. chinensis (L.) Kitam.

 Brassica rapa  subsp.  chinensis.  Reddish-brown seeds with a network of stipples.
Brassica rapa subsp. chinensis. Reddish-brown seeds with a network of stipples.