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Trifolium hirtum

Species category

Agricultural

Common name

rose 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 2–2.5 mm
  • Width 1.5–2 mm
  • Thickness 1.5–1.8 mm

Color

Yellow

Texture

Smooth to smooth-glossy

Other structures

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

Identification notes

Seed is ovalOval:
Broadly elliptic.
 and not flattened in transverseTransverse:
Set crosswise, crossing or at right angles.
 section. RadicleRadicle:
The rudimentary root of the embryo, developing into the primary root after emergence from the seed coat.
 lobe is compressed against the cotyledonCotyledon:
The modified storage leaf or pair of leaves of an embryo and seedling (see primary leaf).
 lobe and is slightly shorter. Noticeable longitudinal wrinkling to the upper portion of the cotyledonary lobe.

Noxious weed seed categories

Not listed

AOSA examination list

Included

Nomenclature

Family

Fabaceae

Valid name

Trifolium hirtum All. 

Trifolium hirtum. True seeds with noticeable longitudinal wrinkling to the upper portion of the cotyledonary lobe. Photo courtesy of Colorado State University, Department of Soil and Crop Sciences.
Trifolium hirtum. True seeds with noticeable longitudinal wrinkling to the upper portion of the cotyledonary lobe. Photo courtesy of Colorado State University, Department of Soil and Crop Sciences.