Artemisia annua

Species category

Shrub or Tree, Weed

Common name

sweet sagewort

Diagnostic characters

Planting unit

AcheneAchene:
A dry, hard, one-chambered, one-seeded indehiscent fruit, as in buckwheat (Fagopyrum) or sunflower (Helianthus). The fruit wall is not united with the seed coat.

Shape

ObovateObovate:
Inverted egg shaped with apical end the broadest.

Size

  • Length: 0.7–0.9 mm
  • Width: 0.4–0.5 mm
  • Thickness: 0.1–0.2 mm

Color

Gray

Texture

GranularGranular:
Resembling or consisting of small grains or particles.
with many, fine longitudinal ribs

Other structures

Often with lateral indentations above the base

Identification notes

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

Noxious weed seed categories

Not listed

AOSA examination list

Not included

Nomenclature

Family

Asteraceae

Valid name

Artemisia annua L.

 Artemisia annua.  Obovate achenes, with many fine longitudinal ribs and granular texture.
Artemisia annua. Obovate achenes, with many fine longitudinal ribs and granular texture.