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Malachra alceifolia

Species category

Weed

Common name

yellow leafbract

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.

Size

  • Length 2.5 mm
  • Width 1.5 mm
  • Thickness 1.5 mm

Color

Dark brown

Texture

ScurfyScurf:
Having flakes on the surface.
, often covered with carpelCarpel:
One section of a compound ovary.
 walls

Other structures

HilumHilum:
The scar on the seed coat at the place of its detachment from the seed stalk (funiculus).
 is linear and on ventralVentral:
Adaxial; of the side of an organ facing the axis (compare dorsal).
side.

Identification notes

Seeds enveloped in carpelCarpel:
One section of a compound ovary.
 walls are common. The carpelCarpel:
One section of a compound ovary.
 wall is open in area of seed hilumHilum:
The scar on the seed coat at the place of its detachment from the seed stalk (funiculus).
.

Noxious weed seed categories

State Noxious Weed: Hawaii

AOSA examination list

Not included

Nomenclature

Family

Malvaceae

Valid name

Malachra alceifolia Jacq.

Malachra alceifolia. Seeds enveloped in carpel walls, where the carpel wall is open in the area of the seed hilum. 
Malachra alceifolia. Seeds enveloped in carpel walls, where the carpel wall is open in the area of the seed hilum.