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Trifolium dubium

Species category

Agricultural, Flower

Common name

suckling clover, hop clover, smallhop 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.

Size

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

Color

Yellowish to light brown

Texture

Shiny

Other structures

RadicleRadicle:
The rudimentary root of the embryo, developing into the primary root after emergence from the seed coat.
 lobe is slightly shorter than the cotyledonCotyledon:
The modified storage leaf or pair of leaves of an embryo and seedling (see primary leaf).
 lobe.

Identification notes

Seeds are broadly ovalOval:
Broadly elliptic.
. Many seeds purplish. Slightly larger seed than T. campestre. "Furrow" line not parallel to the axis of the seed.

Noxious weed seed categories

Not listed

AOSA examination list

Included

Nomenclature

Family

Fabaceae

Valid name

Trifolium dubium Sibth.

Trifolium dubium. True seeds that are broadly oval, and the radicle lobe is slightly shorter than the cotyledon lobe. Photo courtesy of Colorado State University, Department of Soil and Crop Sciences.
Trifolium dubium. True seeds that are broadly oval, and the radicle lobe is slightly shorter than the cotyledon lobe. Photo courtesy of Colorado State University, Department of Soil and Crop Sciences.