Saccharum officinarum

Species category

Agricultural

Common name

sugarcane

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

ObovateObovate:
Inverted egg shaped with apical end the broadest.

Size

  • Length 3.5–4 mm
  • Width 0.5–1 mm
  • Thickness 0.5–1 mm

Color

Brown

Texture

Smooth

Lemma

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

Palea

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

Other structures

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.
are present.

Identification notes

Many long silky hairs attached to the unit base.

Noxious weed seed categories

Not listed

AOSA examination list

Not included

Nomenclature

Family

Poaceae

Valid name

Saccharum officinarum L.

 Saccharum officinarum.  Spikelets with many long silky hairs attached to the unit base. Photo by Julia Scher, USDA-APHIS-PPQ.
Saccharum officinarum. Spikelets with many long silky hairs attached to the unit base. Photo by Julia Scher, USDA-APHIS-PPQ.
 Saccharum officinarum.  Spikelets with a rachis segment and pedicel present. Photo by Julia Scher, USDA-APHIS-PPQ.
Saccharum officinarum. Spikelets with a rachis segment and pedicel present. Photo by Julia Scher, USDA-APHIS-PPQ.
 Saccharum officinarum.  Spikelets with a rachis segment and pedicel present. Photo by Julia Scher, USDA-APHIS-PPQ.
Saccharum officinarum. Spikelets with a rachis segment and pedicel present. Photo by Julia Scher, USDA-APHIS-PPQ.