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Datura stramonium

Species category

Flower

Common name

jimsonweed

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

D-shaped

Size

  • Length 2.5 mm
  • Width 3 mm
  • Thickness 1.4 mm

Color

Black

Texture

Reticulum is thick; the interspaces are shallow. The margin is laterally rounded.

Other structures

HilumHilum:
The scar on the seed coat at the place of its detachment from the seed stalk (funiculus).
 is on the straight part of the margin; often, a short hump is near the hilumHilum:
The scar on the seed coat at the place of its detachment from the seed stalk (funiculus).
.

Identification notes

Seed with a wavy surface, covered with a well developed reticulum. Seed margin is transversely rounded. HilumHilum:
The scar on the seed coat at the place of its detachment from the seed stalk (funiculus).
 is triangular, flush with the perimeter, and does not protrude.

Noxious weed seed categories

State Noxious Weed: Mississippi, North Carolina, Pennsylvania, West Virginia

AOSA examination list

Included

More information

For more information, see ISMA fact sheet.

Nomenclature

Family

Solanaceae

Valid name

Datura stramonium L.

Synonyms

Datura stramonium L. var. tatula (L.) Torr.
Datura tatula L.

Datura stramonium . Reticulum is thick; the interspaces are shallow. The margin is laterally rounded. 
Datura stramonium. Reticulum is thick; the interspaces are shallow. The margin is laterally rounded. 
Datura stramonium.  Reticulum is thick; the interspaces are shallow. The margin is laterally rounded. Photo by Shannon E. Jarman, USDA APHIS-PPQ.
Datura stramonium. Reticulum is thick; the interspaces are shallow. The margin is laterally rounded. Photo by Shannon E. Jarman, USDA APHIS-PPQ.