Artemisia douglasiana

Species category

Shrub or Tree, Weed

Common name

Douglas' 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: 1–1.7 mm
  • Width: 0.4–0.5 mm
  • Thickness: 0.4–0.5 mm

Color

Brown

Texture

Few large and many fine longitudinal ribs

Other structures

Some with apicalApical:
The distal end of the fruit or seed away from the point of attachment or attachment scar.
crowns

Identification notes

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

Noxious weed seed categories

Not listed

AOSA examination list

Not included

Nomenclature

Family

Asteraceae

Valid name

Artemisia douglasiana Besser

Synonyms

Artemisia campestris L. var. douglasiana (Besser) B. Boivin 
Artemisia vulgaris L. var. douglasiana (Besser) H. St. John
Artemisia vulgaris L. ssp. heterophylla (Nutt.) H.M. Hall & Clem.

 Artemisia vulgaris.  Achenes with a small hilum extending beyond the base.
Artemisia vulgaris. Achenes with a small hilum extending beyond the base.