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Oxytropis sericea var. speciosa

Species category

Weed

Common name

white locoweed

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

Kidney to mitten shaped

Size

  • Length 1.7–2.2 mm
  • Width 1–1.8 mm
  • Thickness 0.5–1 mm

Color

Reddish-brown to brown

Texture

Smooth

Other structures

HilumHilum:
The scar on the seed coat at the place of its detachment from the seed stalk (funiculus).
 is in deep indentation between lobes.

Identification notes

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

Noxious weed seed categories

State Noxious Weed: Hawaii 

AOSA examination list

Not included

Nomenclature

Family

Fabaceae

Valid name

Oxytropis sericea var. speciosa (Torr. & A. Gray) S.L. Welsh

Oxytropis sericea var. speciosa. True seeds with a light-colored hilar notch. Photo courtesy of Colorado State University, Department of Soil and Crop Sciences.
Oxytropis sericea var. speciosa. True seeds with a light-colored hilar notch. Photo courtesy of Colorado State University, Department of Soil and Crop Sciences.