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Ipomoea purpurea

Species category

Flower

Common name

tall 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

ObovateObovate:
Inverted egg shaped with apical end the broadest.
 to ovalOval:
Broadly elliptic.
 with two flat sides.

Size

  • Length 4–4.5 mm
  • Width 2.5–3 mm
  • Thickness 2.5–3 mm

Color

Grayish black

Texture

Minutely grained with large wavy ridges

Other structures

HilumHilum:
The scar on the seed coat at the place of its detachment from the seed stalk (funiculus).
 axis is parallel to the seed axis.

Identification notes

Seed has an irregular surface with large wavy ridges on all surfaces. HilumHilum:
The scar on the seed coat at the place of its detachment from the seed stalk (funiculus).
 axis is parallel to the seed axis. Surface texture has a very fine grain.

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, Kansas, Louisiana, Minnesota, Mississippi, Nebraska, New Mexico, North Carolina, Oklahoma, Texas, West Virginia 

AOSA examination list

Included

More information

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

Nomenclature

Family

Convolvulaceae

Valid name

Ipomoea purpurea (L.) Roth

Synonyms

Convolvulus purpureus L.
Ipomoea hirsutula Jacq. f.
Ipomoea purpurea (L.) Roth var. diversifolia (Lindl.) O'Donell
Pharbitis purpurea (L.) Voigt

Ipomoea purpurea. Grayish-black seeds.
Ipomoea purpurea. Grayish-black seeds.
Ipomoea purpurea . Grayish-black seeds.
Ipomoea purpurea. Grayish-black seeds.
From Left to Right: 1. Ipomoea hederacea 2. Ipomoea purpurea 3. Calystegia sepium 4. C onvolvulus arvensis 5. Convolvulus equitans 6. Jacquemontia tamnifolia . Seeds are minutely grained with large, wavy ridges.
From Left to Right: 1. Ipomoea hederacea 2. Ipomoea purpurea 3. Calystegia sepium 4. Convolvulus arvensis 5. Convolvulus equitans 6. Jacquemontia tamnifolia. Seeds are minutely grained with large, wavy ridges.