Oenothera laciniata

Species category

Flower

Common name

cutleaf evening primrose

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

ObovateObovate:
Inverted egg shaped with apical end the broadest.

Size

  • Length 1–1.5 mm
  • Width 0.8–0.9 mm
  • Thickness 0.6–0.7 mm

Color

Light brown

Texture

ReticulatedReticulated:
Resembling a net or network, especially having veins, fibers, or lines crossing the surface.  
with circular indentations

Other structures

HilumHilum:
The scar on the seed coat at the place of its detachment from the seed stalk (funiculus).
is on the sharp pointed, basalBasal:
The base of the fruit or seed opposite the apical end.
end.

Identification notes

Seeds are small with a very rough reticulatedReticulated:
Resembling a net or network, especially having veins, fibers, or lines crossing the surface.  
surface. HilumHilum:
The scar on the seed coat at the place of its detachment from the seed stalk (funiculus).
is somewhat oblique at the base.

Noxious weed seed categories

State Noxious Weed: Hawaii

AOSA examination list

Not included

Nomenclature

Family

Onagraceae

Valid name

Oenothera laciniata Hill

Synonyms

Raimannia laciniata (Hill) Rose

 Oenothera laciniata.  Small seeds with a very rough reticulated surface. 
Oenothera laciniata. Small seeds with a very rough reticulated surface.