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Datura quercifolia

Species category

Flower, Weed

Common name

Chinese thorn-apple

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 3–3.7 mm
  • Width 4–4.5 mm
  • Thickness 0.9–1.1 mm

Color

Black or brown

Texture

Coarse reticulations covered with fine reticulations

Other structures

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

Identification notes

Seed relatively flat with a rounded margin.

Noxious weed seed categories

Not listed

AOSA examination list

Not included

Nomenclature

Family

Solanaceae

Valid name

Datura quercifolia Kunth

Synonyms

Datura ferox auct. non L.

Datura quercifolia . Seeds have coarse reticulations covered with fine reticulations.
Datura quercifolia. Seeds have coarse reticulations covered with fine reticulations.
Datura quercifolia . Close-up view of seed surface reticulations. Photo by Norma Diaz, USDA-APHIS-PPQ.
Datura quercifolia. Close-up view of seed surface reticulations. Photo by Norma Diaz, USDA-APHIS-PPQ.