Chamaecrista fasciculata

Species category

Flower, Weed

Common name

partridge 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

Rhombic to diamond

Size

  • Length: 4–4.5 mm
  • Width: 2–2.8 mm
  • Thickness: 0.8–1 mm

Color

Mottled brown and black; light brown edges; black, brown hilumHilum:
The scar on the seed coat at the place of its detachment from the seed stalk (funiculus).
and apexApical:
The distal end of the fruit or seed away from the point of attachment or attachment scar.
.

Texture

Shiny with irregular rows of dimples; smooth and punctate with rows of small depressions curving from the apexApical:
The distal end of the fruit or seed away from the point of attachment or attachment scar.
to the hilumHilum:
The scar on the seed coat at the place of its detachment from the seed stalk (funiculus).
.

Other structures

The base corner is elongate, and the adjacent corner is rounded. HilumHilum:
The scar on the seed coat at the place of its detachment from the seed stalk (funiculus).
protrudes from one corner.

Identification notes

Mottling is very irregular. The arrangement of the small depressed dots in rows is unusual. A beak-like protuberance (remnant of the funiculusFuniculus:
The stalk that connects an ovule (seed) to the placenta of the ovary wall.
) is present and lighter brown than the rest of the seed.

Noxious weed seed categories

Not listed

AOSA examination list

Included

Nomenclature

Family

Fabaceae

Valid name

Chamaecrista fasciculata (Michx.) Greene

 Chamaecrista fasciculata.  Seeds are smooth and punctate with rows of small depressions curving from the apex to the hilum. Photo courtesy of Colorado State University, Department of Soil and Crop Sciences.
Chamaecrista fasciculata. Seeds are smooth and punctate with rows of small depressions curving from the apex to the hilum. Photo courtesy of Colorado State University, Department of Soil and Crop Sciences.
 Chamaecrista fasciculata.  Seeds are black and brown mottled, with light brown edges, and a black and brown hilum and apex.
Chamaecrista fasciculata. Seeds are black and brown mottled, with light brown edges, and a black and brown hilum and apex.