Verbena sp.

Species category

Weed

Common name

vervain

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

Oblanceolate

Size

  • Length 3.5–4 mm 
  • Width 1.5–1.7 mm 
  • Thickness 0.9–1 mm 

Color

DorsalDorsal:
Upper side or back of a seed or fruit.
: gray

VentralVentral:
Adaxial; of the side of an organ facing the axis (compare dorsal).
: white

Texture

DorsalDorsal:
Upper side or back of a seed or fruit.
: rough.

VentralVentral:
Adaxial; of the side of an organ facing the axis (compare dorsal).
: tuberculateTuberculate:
Having small pimple-like protuberances.
.

Other structures

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).
coat is flared at the apicalApical:
The distal end of the fruit or seed away from the point of attachment or attachment scar.
end.

Identification notes

DorsalDorsal:
Upper side or back of a seed or fruit.
coat nearly surrounds the 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).
, leaving two ridges on the ventralVentral:
Adaxial; of the side of an organ facing the axis (compare dorsal).
side.

Noxious weed seed categories

Not listed

AOSA examination list

Not included

Nomenclature

Family

Verbenaceae

Valid name

Verbena L.

Synonyms

 Verbena.  Nutlets with a coat that is flared at the apical end.
Verbena. Nutlets with a coat that is flared at the apical end.