Elymus mutabilis

Species category

Revegetation or Rangeland 

Common name

lappelm

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 8.5–11 mm
  • Width 1.6–2 mm
  • Thickness 1–1.1 mm

Color

Brown

Texture

Smooth

Lemma

Lanceolate; no hump near the callusCallus:
The hard base of grass florets or spikelets, just above the point of disarticulation.
.

Palea

Keels ciliate. PaleaPalea:
One of the thin bracts of grass floret enclosing the fruit (caryopsis) that is located on the side opposite the embryo.
is the same length as the lemmaLemma:
One of two bracts of the grass floret; it is located on the side nearest the embryo and opposite the rachilla.
.

Other structures

Short awnAwn:
A narrow, bristle-like organ, as on the glumes or lemmas of grasses (Poaceae).
. Lateral sides of the callusCallus:
The hard base of grass florets or spikelets, just above the point of disarticulation.
have hispid hairs.

Identification notes

RachillaRachilla:
The axis of a spikelet.
is pubescentPubescent:
Having hairs.
.

Noxious weed seed categories

Not listed

AOSA examination list

Not included

Nomenclature

Family

Poaceae

Valid name

Elymus mutabilis (Drobow) Tzvelev

 Elymus mutabilis.  Florets with a short awn and the lateral sides of the callus have hispid hairs.
Elymus mutabilis. Florets with a short awn and the lateral sides of the callus have hispid hairs.