Lapsana communis

Species category

Flower, Weed

Common name

common nipplewort, nipplewort

Diagnostic characters

Planting unit

AcheneAchene:
A dry, hard, one-chambered, one-seeded indehiscent fruit, as in buckwheat (Fagopyrum) or sunflower (Helianthus). The fruit wall is not united with the seed coat.

Shape

Oblanceolate

Size

  • Length 3.6–4 mm 
  • Width 0.8–0.9 mm 
  • Thickness 0.8–0.9 mm 

Color

Brown

Texture

Large longitudinal ribs with small ribs in between

Other structures

AcheneAchene:
A dry, hard, one-chambered, one-seeded indehiscent fruit, as in buckwheat (Fagopyrum) or sunflower (Helianthus). The fruit wall is not united with the seed coat.
is slightly curved.

Identification notes

BasalBasal:
The base of the fruit or seed opposite the apical end.
end pointed. ApicalApical:
The distal end of the fruit or seed away from the point of attachment or attachment scar.
end with small pappusPappus:
Modified calyx in Asteraceae, composed of hairs, bristles, awns, or scales. The pappus-like structure attached to milkweed seeds is termed a coma. 
crown.

Noxious weed seed categories

Not listed

AOSA examination list

Not included

More information

For more information, see ISMA fact sheet.

Nomenclature

Family

Asteraceae

Valid name

Lapsana communis L.

 Lapsana communis.  Achenes with large longitudinal ribs with small ribs in between. 
Lapsana communis. Achenes with large longitudinal ribs with small ribs in between.