Richardia scabra

Species category

Agricultural

Common name

rough Mexican clover

Diagnostic characters

Planting unit

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

Shape

Oblong

Size

  • Length 2–2.7 mm
  • Width 1.2–1.7 mm
  • Thickness 0.8–1 mm

Color

Brown pericarpPericarp:
Fruit wall; derived from the ovary wall.
, seed is darker brown

Texture

Pericarp tuberculateTuberculate:
Having small pimple-like protuberances.
, seed coatSeed coat:
The protective covering of a seed usually composed of the inner and outer integuments. Also called the testa.
(testaTesta:
The protective covering of a seed usually composed of the inner and outer integuments. Also called a seed coat.
) with strigose hairs

Other structures

The scar is a longitudinal indentation. PericarpPericarp:
Fruit wall; derived from the ovary wall.
is sometimes missing.

Identification notes

MericarpMericarp:
One-half of a two-sectioned fruit known as a schizocarp (e.g. carrot).
sides slightly converge and the ends are somewhat truncated. Scar nearly as long as the mericarpMericarp:
One-half of a two-sectioned fruit known as a schizocarp (e.g. carrot).
.

Noxious weed seed categories

Not listed

AOSA examination list

Not included

Nomenclature

Family

Rubiaceae

Valid name

Richardia scabra L.

 Richardia scabra.  Mericarps that have seed coats (testas) with strigose hairs. 
Richardia scabra. Mericarps that have seed coats (testas) with strigose hairs. 
 Richardia scabra.  Mericarps with a scar that is a longitudinal indentation. 
Richardia scabra. Mericarps with a scar that is a longitudinal indentation.