Melastoma sanguineum

Species category

Weed

Common name

red melastome

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

Triangular

Size

  • Length 0.5–0.8 mm
  • Width 0.5–0.7 mm
  • Thickness 0.3–0.5 mm

Color

Light brown

Texture

ReticulatedReticulated:
Resembling a net or network, especially having veins, fibers, or lines crossing the surface.  

Other structures

HilumHilum:
The scar on the seed coat at the place of its detachment from the seed stalk (funiculus).
is the full width of seed and round and flat.

Identification notes

HilumHilum:
The scar on the seed coat at the place of its detachment from the seed stalk (funiculus).
at the end of the cotyledonCotyledon:
The modified storage leaf or pair of leaves of an embryo and seedling (see primary leaf).
lobe at corner of triangle.

Noxious weed seed categories

State Noxious Weed: Hawaii

AOSA examination list

Not included

Nomenclature

Family

Melastomataceae

Valid name

Melastoma sanguineum Sims

 Melastoma sanguineum.  Reticulated seeds. Photo by Julia Scher, USDA-APHIS-PPQ.
Melastoma sanguineum. Reticulated seeds. Photo by Julia Scher, USDA-APHIS-PPQ.
 Melastoma sanguineum.  The hilum is the full width of the seed. Photo by Julia Scher, USDA-APHIS-PPQ.
Melastoma sanguineum. The hilum is the full width of the seed. Photo by Julia Scher, USDA-APHIS-PPQ.
 Melastoma sanguineum.  The hilum is the full width of the seed. Photo by Julia Scher, USDA-APHIS-PPQ.
Melastoma sanguineum. The hilum is the full width of the seed. Photo by Julia Scher, USDA-APHIS-PPQ.