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Jacquemontia tamnifolia

Species category

Weed

Common name

hairy clustervine, clustervine

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.
 with two flat sides

Size

  • Length 2–3 mm 
  • Width 1.5 –2 mm 
  • Thickness 1.2–1.5 mm 

Color

Brown

Texture

Dull with tuberculateTuberculate:
Having small pimple-like protuberances.
 protuberances

Other structures

HilumHilum:
The scar on the seed coat at the place of its detachment from the seed stalk (funiculus).
 axis is not parallel to seed axis.

Identification notes

Seeds very small with wide-spaced tubercles. Axis of hilumHilum:
The scar on the seed coat at the place of its detachment from the seed stalk (funiculus).
 is not parallel to seed axis.

Noxious weed seed categories

Not listed

AOSA examination list

Not included

Nomenclature

Family

Convolvulaceae

Valid name

Jacquemontia tamnifolia (L.) Griseb.

Synonyms

Ipomoea tamnifolia L.
Thyella tamnifolia (L.) Raf.

Jacquemontia tamnifolia. Dull obovate seeds with tuberculate protuberances. 
Jacquemontia tamnifolia. Dull obovate seeds with tuberculate protuberances. 
From Left to Right: 1. Ipomea hederacea 2. Ipomea purpurea 3. Calystegia sepium 4. Convolvulus arvensis 5. Convolvulus equitans 6. Jacquemontia tamnifolia . Seeds with a hilum with the axis not parallel to the seed axis.
From Left to Right: 1. Ipomea hederacea 2. Ipomea purpurea 3. Calystegia sepium 4. Convolvulus arvensis 5. Convolvulus equitans 6. Jacquemontia tamnifolia. Seeds with a hilum with the axis not parallel to the seed axis.