Solanum elaeagnifolium

Species category

Weed

Common name

silverleaf nightshade, tomato weed, trompillo, white horsenettle, white nightshade

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

LenticularLenticular:
Lens-shaped, circular in outline with convex sides.
with hilumHilum:
The scar on the seed coat at the place of its detachment from the seed stalk (funiculus).
indent

Size

  • Length 2.5–3 mm
  • Width 2–2.5 mm
  • Thickness 0.4–0.6 mm

Color

Light brown

Texture

Faintly reticulatedReticulated:
Resembling a net or network, especially having veins, fibers, or lines crossing the surface.  
and leathery

Other structures

HilumHilum:
The scar on the seed coat at the place of its detachment from the seed stalk (funiculus).
is in a slight indentation on the margin.

Identification notes

Seed has similar characteristics to Solanum carolinense except these are larger. This seed tends to have a twist in its entire structure.

Noxious weed seed categories

State Noxious Weed: Alabama, Arizona, Arkansas, California, Colorado, Florida, Georgia, Hawaii, Idaho, Kansas, Michigan, Nevada, New Mexico, Oklahoma, South Carolina, Texas, Washington 

AOSA examination list

Included

More information

For more information, see ISMA fact sheet.

Nomenclature

Family

Solanaceae

Valid name

Solanum elaeagnifolium Cav.

 Solanum elaeagnifolium.  True seeds that tend to have a twist in their entire structure. 
Solanum elaeagnifolium. True seeds that tend to have a twist in their entire structure. 
From Left to Right:  1.  Solanum carolinense  2.  Solanum elaegnifolium.
From Left to Right:  1. Solanum carolinense 2. Solanum elaegnifolium.