ITP Logo

Geranium dissectum

Species category

Weed

Common name

cutleaf geranium

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 2 mm
  • Width 1 mm
  • Thickness 1 mm

Color

Grayish-brown

Texture

Strong reticulum with equilateral interspaces

Other structures

HilumHilum:
The scar on the seed coat at the place of its detachment from the seed stalk (funiculus).
 on the end

Identification notes

Seeds are borne singly in a fruitFruit:
A mature ovary and any associated parts.
. FruitFruit:
A mature ovary and any associated parts.
 is very hairy and attached to a circular style. Shape of the reticulum interspaces separates the two Geranium species.

Noxious weed seed categories

Not listed

AOSA examination list

Included

More information

For more information, see ISMA fact sheet, Geranium spp.

Nomenclature

Family

Geraniaceae

Valid name

Geranium dissectum L.

Synonyms

Geranium laxum Hanks

Geranium dissectum. Seeds are borne singly in a fruit that is very hairy and is attached to a circular style. 
Geranium dissectum. Seeds are borne singly in a fruit that is very hairy and is attached to a circular style. 
Geranium dissectum. Seeds (true seeds) with pericarp removed. Photo by Keith E. Clancy, USDA-APHIS-PPQ.
Geranium dissectum. Seeds (true seeds) with pericarp removed. Photo by Keith E. Clancy, USDA-APHIS-PPQ.