Gossypium hirsutum

Species category

Agricultural

Common name

cotton

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

ObovateObovate:
Inverted egg shaped with apical end the broadest.
with two flat sides

Size

  • Length 9 mm
  • Width 4.5 mm
  • Thickness 4.5 mm

Color

Dark brown

Texture

Unconditioned seeds have a deep hair mat; conditioned seeds are smooth.

Other structures

Large basal hilumHilum:
The scar on the seed coat at the place of its detachment from the seed stalk (funiculus).

Identification notes

Seed with two longitudinal flat surfaces. Seeds just harvested are covered with voluminous amounts of fiber. Seeds that have been conditioned by clipping are covered with short pubescence versus acid-delinted seeds are smooth. Most marketed seeds have been delinted.

Noxious weed seed categories

Not listed

AOSA examination list

Included

More information

For more information, see ISMA fact sheet.

Nomenclature

Family

Malvaceae

Valid name

Gossypium hirsutum L.

 Gossypium sp.  Seeds that have been acid-delineated are smooth. Seeds just harvested are covered with voluminous amounts of fiber.
Gossypium sp. Seeds that have been acid-delineated are smooth. Seeds just harvested are covered with voluminous amounts of fiber.