Mentha pulegium

Species category

Herb or Spice, Weed

Common name

pennyroyal, peppermint

Diagnostic characters

Planting unit

NutletNutlet:
A small, dry, indehiscent carpel of a fruit, usually composed of one quarter of the fruit with each enclosing a single seed (e.g. mints).

Shape

OvalOval:
Broadly elliptic.

Size

  • Length 0.6–0.7 mm
  • Width 0.4–0.5 mm
  • Thickness 0.3–0.4 mm

Color

Brown

Texture

GranularGranular:
Resembling or consisting of small grains or particles.

Other structures

Two flat surfaces on ventralVentral:
Adaxial; of the side of an organ facing the axis (compare dorsal).
side with rib between

Identification notes

BasalBasal:
The base of the fruit or seed opposite the apical end.
attachment with two lateral adjoining indentations.

Noxious weed seed categories

Not listed

AOSA examination list

Not included

Nomenclature

Family

Lamiaceae

Valid name

Mentha pulegium L.

 Mentha pulegium.  Granular nutlets with two flat surfaces on the ventral side, with a rib. 
Mentha pulegium. Granular nutlets with two flat surfaces on the ventral side, with a rib.