Cymbopogon flexuosus

Species category

Herb or Spice

Common name

East Indian lemongrass

Diagnostic characters

Planting unit

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.

Shape

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

Size

  • Length 3.5–4 mm
  • Width 0.6–0.9 mm
  • Thickness 0.6–0.9 mm

Color

Brown

Texture

Smooth

Lemma

Papery, covered by glumesGlume:
The pair of chaffy bracts that occur at the base of a grass spikelet, often completely enclosing it.
.

Palea

Papery, covered by glumesGlume:
The pair of chaffy bracts that occur at the base of a grass spikelet, often completely enclosing it.
.

Other structures

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.
has a basally attached rachis segmentRachis segment:
A segment of the central axis of the inflorescence (rachis). In some species (e.g. Andropogon) separation of the sessile spikelets occurs when the rachis disarticulates at the spikelet bases leaving the segment of the rachis between spikelets attached to the lower spikelet.
and pedicelPedicel:
The stalk within an inflorescence supporting a single flower or spikelet.
.

Identification notes

An awnAwn:
A narrow, bristle-like organ, as on the glumes or lemmas of grasses (Poaceae).
protrudes from the distal end of the 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.
. The rachis segmentRachis segment:
A segment of the central axis of the inflorescence (rachis). In some species (e.g. Andropogon) separation of the sessile spikelets occurs when the rachis disarticulates at the spikelet bases leaving the segment of the rachis between spikelets attached to the lower spikelet.
and pedicelPedicel:
The stalk within an inflorescence supporting a single flower or spikelet.
have long hairs.

Noxious weed seed categories

Not listed

AOSA examination list

Not included

Nomenclature

Family

Poaceae

Valid name

Cymbopogon flexuosus (Nees ex Steud.) J.F. Watson

Synonyms

Andropogon flexuosus Nees ex Steud.

 Cymbopogon flexuosus.  An awn protrudes from the distal end of the spikelet, and the rachis segment and pedicel have long hairs.
Cymbopogon flexuosus. An awn protrudes from the distal end of the spikelet, and the rachis segment and pedicel have long hairs.
 Cymbopogon flexuosus . Multiple views of spikelet. Photo by Ana Margina, USDA-APHIS-PPQ.
Cymbopogon flexuosus. Multiple views of spikelet. Photo by Ana Margina, USDA-APHIS-PPQ.