Viola arvensis

Species category

Flower, Weed

Common name

European field pansy, pansy violet, johnny-jump-up

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 1.8–2.2 mm
  • Width 1–1.2 mm
  • Thickness 1–1.2 mm

Color

Light brown

Texture

Rough

Other structures

The basalBasal:
The base of the fruit or seed opposite the apical end.
attachment is white and slightly oblique.

Identification notes

Seed cross section is usually circular. One longitudinal line extends from the base to the apexApical:
The distal end of the fruit or seed away from the point of attachment or attachment scar.
.

Noxious weed seed categories

Not listed

AOSA examination list

Not included

More information

For more information, see ISMA fact sheet.

Nomenclature

Family

Violaceae

Valid name

Viola arvensis Murray

Synonyms

Viola tricolor L. var. arvensis (Murray) Boiss.

 Viola arvensis.  True seed with one longitudinal line from the base to the apex.
Viola arvensis. True seed with one longitudinal line from the base to the apex.