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Lathyrus sylvestris

Species category

Agricultural

Common name

flat pea

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

Spherical and globose

Size

  • Length 4.5 mm
  • Width 4.5 mm
  • Thickness 4.5 mm

Color

Reddish-gray to gray

Texture

Roughened by irregular ridges

Other structures

HilumHilum:
The scar on the seed coat at the place of its detachment from the seed stalk (funiculus).
 is linear, one-third the circumference length, and 0.5 mm wide.

Identification notes

Seed might be considered dark gray. The long hilumHilum:
The scar on the seed coat at the place of its detachment from the seed stalk (funiculus).
 is conspicuous. The surface is covered with low, irregular, undulating ridges.

Noxious weed seed categories

Not listed

AOSA examination list

Included

Nomenclature

Family

Fabaceae

Valid name

Lathyrus sylvestris L.

Lathyrus sylvestris. Seeds with a long, linear hilum.
Lathyrus sylvestris. Seeds with a long, linear hilum.
Lathyrus sylvestris. Seeds with a long, linear hilum. Photo courtesy of Colorado State University, Department of Soil and Crop Sciences.
Lathyrus sylvestris. Seeds with a long, linear hilum. Photo courtesy of Colorado State University, Department of Soil and Crop Sciences.