Leonurus cardiaca

Species category

Weed

Common name

common motherwort

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

Triangular

Size

  • Length 2–2.2 mm
  • Width 0.8–1.3 mm
  • Thickness 1–1.3 mm

Color

Light black with some mottling

Texture

GranularGranular:
Resembling or consisting of small grains or particles.

Other structures

VentralVentral:
Adaxial; of the side of an organ facing the axis (compare dorsal).
side with two flat surfaces separated by a ridge. DorsalDorsal:
Upper side or back of a seed or fruit.
side is rounded.

Identification notes

ApicalApical:
The distal end of the fruit or seed away from the point of attachment or attachment scar.
end flat and covered with short hairs.

Noxious weed seed categories

Not listed

AOSA examination list

Not included

Nomenclature

Family

Lamiaceae

Valid name

Leonurus cardiaca L.

 Leonurus cardiaca.  Achenes with a flat apical end that is covered in short hairs.
Leonurus cardiaca. Achenes with a flat apical end that is covered in short hairs.