Thinopyrum intermedium

Species category

Agricultural, Revegetation or Rangeland

Common name

intermediate 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 11 mm
  • Width 2 mm
  • Thickness 1.5 mm

Color

Light brown

Texture

Lustrous and translucent; glabrousGlabrous:
Lacking hairs or pubescence.
or minutely pubescentPubescent:
Having hairs.
.

Lemma

Convex with veins coming together to form a sharp apexApical:
The distal end of the fruit or seed away from the point of attachment or attachment scar.

Palea

Deep V-shaped concavity

Other structures

RachillaRachilla:
The axis of a spikelet.
V-shaped with those on 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.
shorter

Identification notes

GlumesGlume:
The pair of chaffy bracts that occur at the base of a grass spikelet, often completely enclosing it.
are fairly straight and short, not exceeding the length of the basal floretFloret:
A small flower in a clustered inflorescence (e.g., sunflower, grasses). In grasses, a floret consists of the lemma, palea, stamens, and pistil.
. CaryopsisCaryopsis:
The single-seeded fruit or grain of the grass family (Poaceae); the fruit wall (pericarp) is united with the seed coat (testa).
is thick and with a V-shaped concavity. PaleaPalea:
One of the thin bracts of grass floret enclosing the fruit (caryopsis) that is located on the side opposite the embryo.
margin hairs not long and close-spaced.

Noxious weed seed categories

Not listed

AOSA examination list

Not included

Nomenclature

Family

Poaceae

Valid name

Thinopyrum intermedium (Host) Barkworth & D.R. Dewey

Synonyms

Agropyron aucheri Boiss.
Agropyron ciliatiflorum Roshev.
Agropyron gentryi Melderis
Agropyron glaucum (Desf. ex DC.) Roem. & Schult.
Agropyron intermedium (Host) P. Beauv.
Agropyron intermedium (Host) P. Beauv. var. trichophorum (Link) Halac. Agropyron podperae Nabelek
Agropyron pulcherrimum Grossh.
Agropyron trichophorum (Link) K. Richt.
Elymus hispidus (Opiz) Melderis
Elymus hispidus (Opiz) Melderis ssp. barbulatus (Schur) Melderis
Elymus hispidus (Opiz) Melderis var. ruthenicus (Griseb.) Dorn
Elymus intermedius (Host) P. Beauv.
Elytrigia intermedia (Host) Nevski
Elytrigia intermedia (Host) Nevski ssp. barbulata (Schur) Á. Löve
Elytrigia intermedia (Host) Nevski ssp. intermedia
Elytrigia intermedia (Host) Nevski ssp. trichophora (Link) Tvzel
Thinopyrum intermedium (Host) Barkworth & D.R. Dewey ssp. barbulatum (Schur) Barkworth & D.R. Dewey

 Thinopyrum intermedium . Florets with a V-shaped rachilla.
Thinopyrum intermedium. Florets with a V-shaped rachilla.