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Lathyrus aphaca

Species category

Weed

Common name

yellow 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 to globose

Size

  • Length 3.8 mm 
  • Width 3.5 mm 
  • Thickness 2.9 mm 

Color

Yellow, orange, or red with broad black flecking or mottling

Texture

Smooth and glossy

Other structures

HilumHilum:
The scar on the seed coat at the place of its detachment from the seed stalk (funiculus).
 is at the end and perpendicular to long axis of seed.

Identification notes

Margins of the hilumHilum:
The scar on the seed coat at the place of its detachment from the seed stalk (funiculus).
 are strongly whitened. HilumHilum:
The scar on the seed coat at the place of its detachment from the seed stalk (funiculus).
 shape is twice as long as wide.

Noxious weed seed categories

Not listed

AOSA examination list

Not included

Nomenclature

Family

Fabaceae

Valid name

Lathyrus aphaca L.

Lathyrus aphaca. Yellow, orange, and red seeds with broad black flecking or mottling, and whitened hilum margins. Photo courtesy of Colorado State University, Department of Soil and Crop Sciences.
Lathyrus aphaca. Yellow, orange, and red seeds with broad black flecking or mottling, and whitened hilum margins. Photo courtesy of Colorado State University, Department of Soil and Crop Sciences.