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Agrostemma githago

Species category

Weed

Common name

common corncockle

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

Circular to triangular

Size

  • Length: 3 mm
  • Width: 3 mm
  • Thickness:

Color

Gray

Texture

Concentric rows of spine-like tubercles.

Other structures

HilumHilum:
The scar on the seed coat at the place of its detachment from the seed stalk (funiculus).
 enfolded in margin.

Identification notes

Seeds wedge-shaped and compressed with lateral sides closer together at the hilumHilum:
The scar on the seed coat at the place of its detachment from the seed stalk (funiculus).
. The outline is moderately triangular with the sides rounded. The surface is covered with close concentric rows of spine-like tubercles. HilumHilum:
The scar on the seed coat at the place of its detachment from the seed stalk (funiculus).
 is closed with a slit one-third of the way through the seed's width. Seeds are dark gray to black.

Noxious weed seed categories

State Noxious Weed: Alabama, Arkansas,  Delaware, Florida, Georgia, Indiana, Kentucky, Louisiana, Maine, Maryland, Massachusetts, Mississippi, New Hampshire, New Jersey, North Carolina, Ohio, Oklahoma, Pennsylvania, Rhode Island, South Carolina, Tennessee, Texas, West Virginia 

AOSA examination list

Included

More information

For more information, see ISMA fact sheet.

Nomenclature

Family

Caryophyllaceae

Valid name

Agrostemma githago L.

Agrostemma githago.  Wedge compressed, tuberculate true seeds.
Agrostemma githago. Wedge compressed, tuberculate true seeds.
Agrostemma githago . Multiple views of seed. Photo courtesy of USDA-APHIS-PPQ.
Agrostemma githago. Multiple views of seed. Photo courtesy of USDA-APHIS-PPQ.