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Glaucium corniculatum

Species category

Weed

Common name

blackspot hornpoppy

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 1.5 mm
  • Width 1 mm
  • Thickness 1 mm

Color

Brown to gray

Texture

A deep reticulum-forming square interspaces

Other structures

HilumHilum:
The scar on the seed coat at the place of its detachment from the seed stalk (funiculus).
 is long and linear on the seed margin.

Identification notes

Seed have irregular dimensions but tend to average equal. HilumHilum:
The scar on the seed coat at the place of its detachment from the seed stalk (funiculus).
 forms a straight line on the margin. Reticulum is very uniform with square and shiny interspaces.

Noxious weed seed categories

State Noxious Weed: Oklahoma 

AOSA examination list

Not included

Nomenclature

Family

Papaveraceae

Valid name

Glaucium corniculatum (L.) J.H. Rudolph

Synonyms

Chelidonium corniculatum L.

Glaucium corniculatum. Brown to gray seeds with a deep reticulum that forms square interspaces. 
Glaucium corniculatum. Brown to gray seeds with a deep reticulum that forms square interspaces.