Ipomoea alba

Species category

Flower

Common name

tropical white 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 9 mm
  • Width 7 mm
  • Thickness 7 mm

Color

Light brown

Texture

Smooth

Other structures

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

Identification notes

This species has very large seeds. The two flat sides are somewhat indented. Seed tends to be ovateOvate:
Egg-shaped with basal end the broadest.
rather than obovateObovate:
Inverted egg shaped with apical end the broadest.
since the basalBasal:
The base of the fruit or seed opposite the apical end.
end is larger.

Comments

Seed of this species is considered noxious only as a contaminant. Check individual states for interpretations.

Noxious weed seed categories

State Noxious Weed: Arizona, Arkansas, Georgia, Kansas, Louisiana, Minnesota, Mississippi, Nebraska, New Mexico, North Carolina, Oklahoma, Texas 

AOSA examination list

Not included

More information

For more information, see ISMA fact sheet, Ipomoea spp.

Nomenclature

Family

Convolvulaceae

Valid name

Ipomoea alba L.

Synonyms

Calonyction aculeatum (L.) House
Ipomoea bona-nox L.

 Ipomoea alba.  Seeds with a large circular hilum.
Ipomoea alba. Seeds with a large circular hilum.
 Ipomoea alba.  Very large seeds with two flat sides that are slightly indented.
Ipomoea alba. Very large seeds with two flat sides that are slightly indented.