Rosa woodsii

Species category

Shrub or Tree

Common name

Woods' rose

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

OvateOvate:
Egg-shaped with basal end the broadest.
with angular surfaces 

Size

  • Length 4–5 mm
  • Width 3–3.5 mm
  • Thickness 3–3.5 mm

Color

Light brown 

Texture

Rough; scattered tubercles.

Other structures

Longitudinal suture is visible, flat facets frequent.

Identification notes

AchenesAchene:
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.
are very angular but generally obovateObovate:
Inverted egg shaped with apical end the broadest.
. ApexApical:
The distal end of the fruit or seed away from the point of attachment or attachment scar.
is not regularly rounded.

Noxious weed seed categories

Not listed

AOSA examination list

Not included

Nomenclature

Family

Rosaceae

Valid name

Rosa woodsii Lindl.

 Rosa woodsii . Achenes with a visible longitudinal suture and flat facets.
Rosa woodsii. Achenes with a visible longitudinal suture and flat facets.
 Rosa woodsii . Achenes with scattered tubercles.
Rosa woodsii. Achenes with scattered tubercles.