Prosopis strombulifera

Species category

Weed

Common name

Argentine screwbean

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

EllipticElliptic:
Outline of an ellipse; greatest width midway sloping to an equally pointed apex and base.

Size

Length 3.8–4 mm
Width 3–3.2 mm
Thickness 1.2–1.5 mm

Color

Red

Texture

Dull

Other structures

HilumHilum:
The scar on the seed coat at the place of its detachment from the seed stalk (funiculus).
is at the base with a small lateral protrusion.

Identification notes

Circular line between the margin and center. The line is yellow.

Noxious weed seed categories

State Noxious Weed: California
Federal

Learn more on ITP's Federal Noxious Weed Disseminules tool, listed under Strombocarpa strombulifera.

AOSA examination list

Not included

Nomenclature

Family

Fabaceae

Valid name

Prosopis strombulifera (Lam.) Benth.

Prosopis strombulifera. True seeds with a yellow circular line between the margin and center. Photo by Julia Scher, USDA-APHIS-PPQ.	Prosopis strombulifera. True seeds with a protruding hilum. Photo by Julia Scher, USDA-APHIS-PPQ.
Prosopis strombulifera. True seeds in oddly-shaped pods. Photo by Julia Scher, USDA-APHIS-PPQ.	Prosopis strombulifera. True seeds in oddly-shaped pods. Photo by Julia Scher, USDA-APHIS-PPQ.