Pennisetum clandestinum

Species category

Weed

Common name

kikuyugrass

Diagnostic characters

Planting unit

CaryopsisCaryopsis:
The single-seeded fruit or grain of the grass family (Poaceae); the fruit wall (pericarp) is united with the seed coat (testa).

Shape

OvalOval:
Broadly elliptic.

Size

  • Length 2–3.1 mm
  • Width 1.2–1.8 mm
  • Thickness 0.5–1 mm

Color

Dark brown

Texture

Striate

Palea

Not applicable

Other structures

EmbryoEmbryo:
A rudimentary plant contained in a seed, usually consisting of a more or less differentiated axis and attached cotyledon(s).
is on the ventralVentral:
Adaxial; of the side of an organ facing the axis (compare dorsal).
side at the basalBasal:
The base of the fruit or seed opposite the apical end.
end.

Identification notes

The stigma of the basalBasal:
The base of the fruit or seed opposite the apical end.
end is often seen on the apicalApical:
The distal end of the fruit or seed away from the point of attachment or attachment scar.
end.

Noxious weed seed categories

State Noxious Weed: California 
Federal

Learn more on ITP's Federal Noxious Weed Disseminules tool, listed under Cenchrus clandestinus.

AOSA examination list

Not included

Nomenclature

Family

Poaceae

Valid name

Pennisetum clandestinum Hochst. ex Chiov.

Synonyms

Cenchrus clandestinus (Hochst. ex Chiov.) Morrone

 Pennisetum clandestinum.  Caryopses. 
Pennisetum clandestinum. Caryopses. 
 Pennisetum clandestinum.  Caryopses with florets. 
Pennisetum clandestinum. Caryopses with florets. 
 Pennisetum clandestinum.  Caryopses with the embryo on the ventral side at the basal end.
Pennisetum clandestinum. Caryopses with the embryo on the ventral side at the basal end.
 Pennisetum clandestinum.  Caryopses with the embryo on the ventral side at the basal end. Photo by Julia Scher, USDA-APHIS-PPQ.
Pennisetum clandestinum. Caryopses with the embryo on the ventral side at the basal end. Photo by Julia Scher, USDA-APHIS-PPQ.
 Pennisetum clandestinum.  Florets. Photo by Julia Scher, USDA-APHIS-PPQ.
Pennisetum clandestinum. Florets. Photo by Julia Scher, USDA-APHIS-PPQ.
 Pennisetum clandestinum.  Florets. Photo by Julia Scher, USDA-APHIS-PPQ.
Pennisetum clandestinum. Florets. Photo by Julia Scher, USDA-APHIS-PPQ.