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Dysphania ambrosioides

Species category

Weed

Common name

Mexican tea, Mexican-Tea

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 0.6–0.8 mm
  • Width 0.6–0.8 mm
  • Thickness 0.2–0.3 mm

Color

Black

Texture

Shiny with fine dimples

Other structures

Often covered with the fruitFruit:
A mature ovary and any associated parts.
 coat or bracts

Identification notes

Bracts are opaque and the fruitFruit:
A mature ovary and any associated parts.
 coat is transparent.

Noxious weed seed categories

Not listed

AOSA examination list

Not included

Nomenclature

Family

Chenopodiaceae

Valid name

Dysphania ambrosioides (L.) Mosyakin & Clemants

Synonyms

Ambrina ambrosioides (L.) Spach
Chenopodium ambrosioides L.
Chenopodium ambrosioides L. var. ambrosioides 
Chenopodium ambrosioides L. var. chilense (Schrad.) Speg.
Chenopodium ambrosioides L. ssp. euambrosioides Aellen
Chenopodium ambrosioides L. var. obovatum Speg.
Chenopodium ambrosioides L. var. suffruticosum (Willd.) Asch. & Graebn.
Chenopodium ambrosioides L. var. typicum (Speg.) Aellen
Chenopodium ambrosioides L. var. vagans (Standl.) J.T. Howell
Chenopodium obovatum Moq.
Chenopodium retusum Juss. ex Moq.
Teloxys ambrosioides (L.) W.A. Weber
Teloxys vagans (Standl.) W.A. Weber

Dysphania ambrosioides. Seeds with opaque bracts and a transparent fruit coat.
Dysphania ambrosioides. Seeds with opaque bracts and a transparent fruit coat.