Trifolium apertum

Species category

Weed

Common name

open clover

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

OvalOval:
Broadly elliptic.
to mitten

Size

  • Length 1.2–2 mm 
  • Width 1–1.5 mm 
  • Thickness 0.5–0.8 mm 

Color

Yellow, brown or black; some mottling

Texture

Shiny

Other structures

The radicleRadicle:
The rudimentary root of the embryo, developing into the primary root after emergence from the seed coat.
lobe length varies from half to the full length of the cotyledonCotyledon:
The modified storage leaf or pair of leaves of an embryo and seedling (see primary leaf).
lobe.

Identification notes

HilumHilum:
The scar on the seed coat at the place of its detachment from the seed stalk (funiculus).
is positioned at various distances near the seed end.

Noxious weed seed categories

Not listed

AOSA examination list

Not included

Nomenclature

Family

Fabaceae

Valid name

Trifolium apertum Bobrov

 Trifolium apertum.  True seeds with a radicle lobe length that varies from 1/2 to the full length of the cotyledon lobe. 
Trifolium apertum. True seeds with a radicle lobe length that varies from 1/2 to the full length of the cotyledon lobe.