Trifolium alpestre

Species category

Weed

Common name

owl-headHead:
An inflorescence of stalkless or nearly stalkless flowers attached to a common receptacle that often assumes the appearance of a single flower, but in fact may be a composite of many flowers, e.g. sunflower, clover.
clover, purple-globe 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

Mitten

Size

  • Length 1.8–2.2 mm
  • Width 1.2–1.5 mm
  • Thickness 1–1.2 mm

Color

Yellow to black; some seeds have black mottling

Texture

Smooth

Other structures

The radicleRadicle:
The rudimentary root of the embryo, developing into the primary root after emergence from the seed coat.
lobe is about two-thirds the cotyledonCotyledon:
The modified storage leaf or pair of leaves of an embryo and seedling (see primary leaf).
length.

Identification notes

HilumHilum:
The scar on the seed coat at the place of its detachment from the seed stalk (funiculus).
located 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.

Noxious weed seed categories

Not listed

AOSA examination list

Not included

Nomenclature

Family

Fabaceae

Valid name

Trifolium alpestre L.

 Trifolium alpestre . True seeds with a radicle lobe that is about two-thirds the cotyledon length.
Trifolium alpestre. True seeds with a radicle lobe that is about two-thirds the cotyledon length.