Convolvulus tricolor

Species category

Weed

Common name

dwarf morning-glory

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

OvateOvate:
Egg-shaped with basal end the broadest.
with two flat sides

Size

  • Length 2–3 mm
  • Width 2–3 mm
  • Thickness 1.5–2 mm

Color

Brown

Texture

TuberculateTuberculate:
Having small pimple-like protuberances.

Other structures

HilumHilum:
The scar on the seed coat at the place of its detachment from the seed stalk (funiculus).
is small and oblique.

Identification notes

Three surfaces: two adjacent and flat, and one rounded.

Noxious weed seed categories

State Noxious Weed: Utah

AOSA examination list

Not included

Nomenclature

Family

Convolvulaceae

Valid name

Convolvulus tricolor L.

 Convolvulus tricolor.  Seeds have three surfaces: two adjacent and flat, and one rounded. Photo by Julia Scher, USDA-APHIS-PPQ.
Convolvulus tricolor. Seeds have three surfaces: two adjacent and flat, and one rounded. Photo by Julia Scher, USDA-APHIS-PPQ.
 Convolvulus tricolor.  Seeds with a small, oblique hilum. Photo by Julia Scher, USDA-APHIS-PPQ.
Convolvulus tricolor. Seeds with a small, oblique hilum. Photo by Julia Scher, USDA-APHIS-PPQ.