Trifolium rubens

Species category

Flower, Weed

Common name

red trefoil

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

Mitten

Size

  • Length 1.5–2 mm 
  • Width 1.2–1.5 mm 
  • Thickness 0.9–1.2 mm 

Color

Yellow to purple and mixed

Texture

Smooth

Other structures

There is a weak groove on the seed side between the radicleRadicle:
The rudimentary root of the embryo, developing into the primary root after emergence from the seed coat.
and cotyledonCotyledon:
The modified storage leaf or pair of leaves of an embryo and seedling (see primary leaf).
lobes.

Identification notes

HilumHilum:
The scar on the seed coat at the place of its detachment from the seed stalk (funiculus).
on the margin, may be in a depression or on a straight line.

Noxious weed seed categories

Not listed

AOSA examination list

Not included

Nomenclature

Family

Fabaceae

Valid name

Trifolium rubens L.

 Trifolium rubens.  True seeds that have a weak groove on the seed side between the radicle and cotyledon lobes. 
Trifolium rubens. True seeds that have a weak groove on the seed side between the radicle and cotyledon lobes.