Leymus cinereus

Species category

Revegetation or Rangeland

Common name

basin wildrye

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 8–10 mm
  • Width 1.2–1.5 mm
  • Thickness 1–1.2 mm

Color

Light brown

Texture

The lemmaLemma:
One of two bracts of the grass floret; it is located on the side nearest the embryo and opposite the rachilla.
is sparsely hispid and villous along the sides and base.

Lemma

Round back; none or short awnAwn:
A narrow, bristle-like organ, as on the glumes or lemmas of grasses (Poaceae).
.

Palea

ApexApical:
The distal end of the fruit or seed away from the point of attachment or attachment scar.
has a V-shaped notch at its base. A longitudinal groove may be present.

Other structures

RachillaRachilla:
The axis of a spikelet.
is slender with a fine brown line on the rim of its apexApical:
The distal end of the fruit or seed away from the point of attachment or attachment scar.
.

Identification notes

LemmaLemma:
One of two bracts of the grass floret; it is located on the side nearest the embryo and opposite the rachilla.
is awnless or with short awnAwn:
A narrow, bristle-like organ, as on the glumes or lemmas of grasses (Poaceae).
. CaryopsisCaryopsis:
The single-seeded fruit or grain of the grass family (Poaceae); the fruit wall (pericarp) is united with the seed coat (testa).
is relatively thin. PaleaPalea:
One of the thin bracts of grass floret enclosing the fruit (caryopsis) that is located on the side opposite the embryo.
is exposed throughout. GlumesGlume:
The pair of chaffy bracts that occur at the base of a grass spikelet, often completely enclosing it.
are long, thin with their bases close together over the floret lemmaLemma:
One of two bracts of the grass floret; it is located on the side nearest the embryo and opposite the rachilla.
.

Noxious weed seed categories

Not listed

AOSA examination list

Not included

Nomenclature

Family

Poaceae

Valid name

Leymus cinereus (Scribn. & Merr.) Á. Löve

Synonyms

Aneurolepidium piperi (Bowden) Baum 
Elymus cinereus Scribn. & Merr. 
Elymus cinereus Scribn. & Merr. var. pubens (Piper) C.L. Hitchc. 
Elymus condensatus J. Presl var. pubens Piper 
Elymus piperi Bowden

 Leymus cinereus.  Florets with a sparsely hispid lemma that is villous along the sides and the base.
Leymus cinereus. Florets with a sparsely hispid lemma that is villous along the sides and the base.