Panicum repens

Species category

Weed

Common name

torpedo grass, couch panicum, creeping panic, panic rampant, wainaku grass

Diagnostic characters

Planting unit

FloretFloret:
A small flower in a clustered inflorescence (e.g., sunflower, grasses). In grasses, a floret consists of the lemma, palea, stamens, and pistil.

Shape

EllipticElliptic:
Outline of an ellipse; greatest width midway sloping to an equally pointed apex and base.

Size

  • Length 2 mm
  • Width 0.5 mm
  • Thickness 0.4 mm

Color

Light yellow

Texture

Smooth

Lemma

Translucent and hard

Palea

Moderately hard

Other structures

First glumeGlume:
The pair of chaffy bracts that occur at the base of a grass spikelet, often completely enclosing it.
of spikeletSpikelet:
One or more florets that are subtended by a pair of bracts called glumes. Spikelets are pedicellate if located on a pedicle and sessile if attached directly to the rachis. Often spikelets with single florets have remnants of a second floret, usually a lemma.
is truncate and loose.

Identification notes

FloretFloret:
A small flower in a clustered inflorescence (e.g., sunflower, grasses). In grasses, a floret consists of the lemma, palea, stamens, and pistil.
more narrow, light-colored. First glumeGlume:
The pair of chaffy bracts that occur at the base of a grass spikelet, often completely enclosing it.
is truncate and loose-fitting.

Noxious weed seed categories

State Noxious Weed: Hawaii

AOSA examination list

Not included

More information

For more information, see ISMA fact sheet, Panicum spp.

Nomenclature

Family

Poaceae

Valid name

Panicum repens L.

Synonyms

Panicum gouinii Fourn.

 Panicum repens.  Florets are narrower and lighter-colored, with the first glume truncate and loosely fitting. 
Panicum repens. Florets are narrower and lighter-colored, with the first glume truncate and loosely fitting.