Diodia teres

Species category

Weed

Common name

poorjoe

Diagnostic characters

Planting unit

MericarpMericarp:
One-half of a two-sectioned fruit known as a schizocarp (e.g. carrot).

Shape

ObovateObovate:
Inverted egg shaped with apical end the broadest.

Size

  • Length 3.5 mm
  • Width 2.5 mm
  • Thickness 1.25 mm

Color

Dark brown

Texture

Exterior has scattered long hairs; flat surface is scurfyScurf:
Having flakes on the surface.
.

Other structures

Calyx remnant is on top of the mericarpMericarp:
One-half of a two-sectioned fruit known as a schizocarp (e.g. carrot).
.

Identification notes

The unit can be a schizocarpSchizocarp:
A dry, two-seeded fruit of the carrot family (Apiaceae) that separates at maturity along a midline into two mericarps. Each mericarp has a dry, indehiscent pericarp enclosing a loose fitting seed.
(whole fruitFruit:
A mature ovary and any associated parts.
) or a mericarpMericarp:
One-half of a two-sectioned fruit known as a schizocarp (e.g. carrot).
(half fruitFruit:
A mature ovary and any associated parts.
). The external rounded side of the mericarpMericarp:
One-half of a two-sectioned fruit known as a schizocarp (e.g. carrot).
is brown and hairy whereas the flat internal side is white.

Noxious weed seed categories

Not listed

AOSA examination list

Not included

Nomenclature

Family

Rubiaceae

Valid name

Diodia teres Walter

 Diodia teres.  Mericarps with a brown and hairy external side, with a flat, white internal side.
Diodia teres. Mericarps with a brown and hairy external side, with a flat, white internal side.