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Nicotiana sylvestris

Species category

Flower, Weed

Common name

South American tobacco

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

Irregularly ovalOval:
Broadly elliptic.

Size

  • Length 0.5–0.6 mm
  • Width 0.4–0.5 mm
  • Thickness 0.2–0.3 mm

Color

Brown

Texture

Rough

Other structures

HilumHilum:
The scar on the seed coat at the place of its detachment from the seed stalk (funiculus).
 is on margin lateral to base.

Identification notes

HilumHilum:
The scar on the seed coat at the place of its detachment from the seed stalk (funiculus).
 protrudes. Seed shape varies from ovalOval:
Broadly elliptic.
 to rectangular.

Noxious weed seed categories

Not listed

AOSA examination list

Not included

Nomenclature

Family

Solanaceae

Valid name

Nicotiana sylvestris Speg. & Comes

Nicotiana sylvestris. Seeds with the hilum that is lateral to the base.
Nicotiana sylvestris. Seeds with the hilum that is lateral to the base.