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Sida rhombifolia

Species category

Weed

Common name

arrowleaf sida, Cuban jute, escobilla, axocatzín, huinar

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 2 mm 
  • Width 2 mm 
  • Thickness 1 mm 

Color

Purple-black with yellow surrounding hilumHilum:
The scar on the seed coat at the place of its detachment from the seed stalk (funiculus).

Texture

Smooth

Other structures

HilumHilum:
The scar on the seed coat at the place of its detachment from the seed stalk (funiculus).
 is between two unequal lobes; carpelCarpel:
One section of a compound ovary.
 walls are often present.

Identification notes

Seed is a very dark color with a light area around the hilumHilum:
The scar on the seed coat at the place of its detachment from the seed stalk (funiculus).
. CarpelCarpel:
One section of a compound ovary.
 wall has a spine on either side of the carpelCarpel:
One section of a compound ovary.
 opening over the seed hilumHilum:
The scar on the seed coat at the place of its detachment from the seed stalk (funiculus).
.

Noxious weed seed categories

Not listed

AOSA examination list

Not included

More information

For more information, see ISMA fact sheet.

Nomenclature

Family

Malvaceae

Valid name

Sida rhombifolia L.

Synonyms

Sida rhombifolia L. var. rhombifoliaa

Sida rhombifolia. True seeds with the hilum between two unequal lobes, and carpel walls are often present. 
Sida rhombifolia. True seeds with the hilum between two unequal lobes, and carpel walls are often present.