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Geum laciniatum

Species category

Weed

Common name

rough avens

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

EllipticElliptic:
Outline of an ellipse; greatest width midway sloping to an equally pointed apex and base.

Size

  • Length 3–4 mm 
  • Width 1–1.5 mm 
  • Thickness 0.5–0.6 mm 

Color

Dark brown

Texture

Smooth

Other structures

Long styles with hooked ends

Identification notes

Some moderately long hairs on the surface, especially at the base of styles.

Noxious weed seed categories

Not listed

AOSA examination list

Not included

Nomenclature

Family

Rosaceae

Valid name

Geum laciniatum Murray

Geum   laciniatum. Achenes with some moderately long hairs on the surface, especially at the base of the styles. 
Geum laciniatum. Achenes with some moderately long hairs on the surface, especially at the base of the styles.