Limnophila sessiliflora

Species category

Weed

Common name

Asian marshweed, ambulia

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

OvalOval:
Broadly elliptic.

Size

  • Length 0.7–1 mm
  • Width 0.4–0.5 mm
  • Thickness 0.4–0.5 mm

Color

Dark 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 circular and square with the base.

Identification notes

Surface texture is shiny even if highly reticulatedReticulated:
Resembling a net or network, especially having veins, fibers, or lines crossing the surface.  
.

Noxious weed seed categories

State Noxious Weed: California 
Federal

Learn more on ITP's Federal Noxious Weed Disseminules tool.

AOSA examination list

Not included

Nomenclature

Family

Scrophulariaceae

Valid name

Limnophila sessiliflora (Vahl) Blume

 Limnophila sessiliflora.  Seeds with a hilum that is circular and square with the base. Photo by Julia Scher, USDA-APHIS-PPQ.
Limnophila sessiliflora. Seeds with a hilum that is circular and square with the base. Photo by Julia Scher, USDA-APHIS-PPQ.
 Limnophila sessiliflora.  Seed surface texture is shiny, even if highly reticulated. Photo by Julia Scher, USDA-APHIS-PPQ.
Limnophila sessiliflora. Seed surface texture is shiny, even if highly reticulated. Photo by Julia Scher, USDA-APHIS-PPQ.
 Limnophila sessiliflora.  Seeds in capsules. Photo by Julia Scher, USDA-APHIS-PPQ.
Limnophila sessiliflora. Seeds in capsules. Photo by Julia Scher, USDA-APHIS-PPQ.