Chenopodium quinoa

Species category

Agricultural

Common name

quinoa

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

LenticularLenticular:
Lens-shaped, circular in outline with convex sides.

Size

  • Length: 2 mm
  • Width: 2 mm
  • Thickness: 1 mm

Color

Light brown

Texture

Seed and pericarpPericarp:
Fruit wall; derived from the ovary wall.
are reticulate.

Other structures

Often, the pericarpPericarp:
Fruit wall; derived from the ovary wall.
is present.

Identification notes

If the pericarpPericarp:
Fruit wall; derived from the ovary wall.
(fruitFruit:
A mature ovary and any associated parts.
coat) is present, the unit may be referred to as a nutletNutlet:
A small, dry, indehiscent carpel of a fruit, usually composed of one quarter of the fruit with each enclosing a single seed (e.g. mints).
. The seed does not have a black testaTesta:
The protective covering of a seed usually composed of the inner and outer integuments. Also called a seed coat.
as found in the other Chenopodium spp. The linear embryoEmbryo:
A rudimentary plant contained in a seed, usually consisting of a more or less differentiated axis and attached cotyledon(s).
is coiled at the seed margin.

Noxious weed seed categories

Not listed

AOSA examination list

Not included

More information

For more information, see ISMA fact sheet, Chenopodium spp.

Nomenclature

Family

Chenopodiaceae

Valid name

Chenopodium quinoa Willd.

 Chenopodium quinoa.  Seeds with the pericarp.
Chenopodium quinoa. Seeds with the pericarp.
 Chenopodium quinoa . Multiple views of fruit.  Seeds and utricles, with widely-varying pericarp color and testa color. Photo by Madeline Maher, USDA-APHIS-PPQ.
Chenopodium quinoa. Multiple views of fruit.  Seeds and utricles, with widely-varying pericarp color and testa color. Photo by Madeline Maher, USDA-APHIS-PPQ.