Elymus trachycaulus

Species category

Agricultural, Revegetation or Rangeland

Common name

slender wheatgrass

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

Lanceolate

Size

  • Length 10 mm
  • Width 1.5 mm
  • Thickness 1 mm

Color

Light brown

Texture

Fine hair is continuous over the callusCallus:
The hard base of grass florets or spikelets, just above the point of disarticulation.
. RachillaRachilla:
The axis of a spikelet.
is pubescentPubescent:
Having hairs.
.

Lemma

Nearly flat and flared; mostly awnless.

Palea

Flat

Other structures

Pointed callusCallus:
The hard base of grass florets or spikelets, just above the point of disarticulation.
; caryopsisCaryopsis:
The single-seeded fruit or grain of the grass family (Poaceae); the fruit wall (pericarp) is united with the seed coat (testa).
is translucent to transmitted light.

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.
tends to bow on one side and be straight on the other. Hair on the callusCallus:
The hard base of grass florets or spikelets, just above the point of disarticulation.
and rachillaRachilla:
The axis of a spikelet.
is fine and easily removed upon handling. FloretFloret:
A small flower in a clustered inflorescence (e.g., sunflower, grasses). In grasses, a floret consists of the lemma, palea, stamens, and pistil.
is rather flat, light-colored and awnless.

Noxious weed seed categories

Not listed

AOSA examination list

Included

Nomenclature

Family

Poaceae

Valid name

Elymus trachycaulus (Link) Gould ex Shinners

 Elymus trachycaulus.  Florets with fine hair that is continuous over the callus and a pubescent rachilla. 
Elymus trachycaulus. Florets with fine hair that is continuous over the callus and a pubescent rachilla.