Agropyron fragile

Species category

Agricultural, Revegetation or Rangeland

Common name

Siberian 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: 6 mm
  • Width: 1 mm
  • Thickness: 1 mm

Color

Yellow

Texture

Smooth

Lemma

Narrow lanceolate, widest at the base.

Palea

Strong wide-spaced teeth on margins.

Other structures

RachillasRachilla:
The axis of a spikelet.
of various lengths.

Identification notes

SpikeletsSpikelet:
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.
contain several floretsFloret:
A small flower in a clustered inflorescence (e.g., sunflower, grasses). In grasses, a floret consists of the lemma, palea, stamens, and pistil.
. The rachillasRachilla:
The axis of a spikelet.
of the basal floretsFloret:
A small flower in a clustered inflorescence (e.g., sunflower, grasses). In grasses, a floret consists of the lemma, palea, stamens, and pistil.
tend to be shorter and wider. When two or more floretsFloret:
A small flower in a clustered inflorescence (e.g., sunflower, grasses). In grasses, a floret consists of the lemma, palea, stamens, and pistil.
remain attached to each other they are called "multiple floretsFloret:
A small flower in a clustered inflorescence (e.g., sunflower, grasses). In grasses, a floret consists of the lemma, palea, stamens, and pistil.
".

Noxious weed seed categories

Not listed

AOSA examination list

Not included

Nomenclature

Family

Poaceae

Valid name

Agropyron fragile (Roth) P. Candargy

Synonyms

Agropyron cristatum (L.) Gaertn. ssp. fragile (Roth) Á. Löve
Agropyron cristatum (L.) Gaertn. var. fragile (Roth) Dorn
Agropyron fragile (Roth) P. Candargy ssp. mongolicum (Keng) D.R. Dewey
Agropyron fragile (Roth) P. Candargy ssp. sibiricum (Willd.) Melderis
Agropyron fragile (Roth) P. Candargy var. sibiricum (Willd.) Tzvelev
Agropyron mongolicum Keng
Agropyron sibiricum (Willd.) P. Beauv.

 Agropyron fragile.  Florets.
Agropyron fragile. Florets.
From Left to Right: 1.  Agropyron desertorum  2.  Agropyron cristatum  3.  Agropyron fragile  ssp.   sibericum .
From Left to Right: 1. Agropyron desertorum 2. Agropyron cristatum 3. Agropyron fragile ssp. sibericum.