Trifolium hybridum

Species category

Agricultural

Common name

alsike 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.
with slightly divergent radicleRadicle:
The rudimentary root of the embryo, developing into the primary root after emergence from the seed coat.

Size

  • Length 1.3–1.5 mm
  • Width 1–1.2 mm
  • Thickness 0.5–0.8 mm

Color

Yellow with purple flecking which varies to entire purple

Texture

Smooth to dull-smooth

Other structures

RadicleRadicle:
The rudimentary root of the embryo, developing into the primary root after emergence from the seed coat.
lobe is approx. same length as cotyledonCotyledon:
The modified storage leaf or pair of leaves of an embryo and seedling (see primary leaf).
. HilumHilum:
The scar on the seed coat at the place of its detachment from the seed stalk (funiculus).
is in the indentation.

Identification notes

RadicleRadicle:
The rudimentary root of the embryo, developing into the primary root after emergence from the seed coat.
lobe is approximately the same length as the cotyledonCotyledon:
The modified storage leaf or pair of leaves of an embryo and seedling (see primary leaf).
lobe. Seed is laterally compressed. Seed has a yellow background, but purple flecking can change to entire color in various seeds. "Human heart-shaped".

Noxious weed seed categories

Not listed

AOSA examination list

Included

Nomenclature

Family

Fabaceae

Valid name

Trifolium hybridum L.

Synonyms

Trifolium elegans Savi  
Trifolium hybridum L. var. elegans (Savi) Boiss.
Trifolium hybridum L. ssp. elegans (Savi) Asch. & Graebn.  
Trifolium hybridum L. var. pratense Rabenh.

 Trifolium hybridum.  True seeds with a yellow background and purple flecking, that are heart-shaped. Photo courtesy of Colorado State University, Department of Soil and Crop Sciences.
Trifolium hybridum. True seeds with a yellow background and purple flecking, that are heart-shaped. Photo courtesy of Colorado State University, Department of Soil and Crop Sciences.