Koeleria macrantha

Species category

Weed

Common name

prairie Junegrass, Junegrass

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

Narrowly lanceolate

Size

  • Length 3–4.8 mm
  • Width 0.8–1 mm
  • Thickness 0.8–1 mm

Color

Light brown

Texture

Smooth

Lemma

Short awnAwn:
A narrow, bristle-like organ, as on the glumes or lemmas of grasses (Poaceae).
at the apexApical:
The distal end of the fruit or seed away from the point of attachment or attachment scar.

Palea

Transparent and elevated out from 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

RachillaRachilla:
The axis of a spikelet.
is present.

Identification notes

Small lateral groove above the callusCallus:
The hard base of grass florets or spikelets, just above the point of disarticulation.
.

Noxious weed seed categories

Not listed

AOSA examination list

Not included

Nomenclature

Family

Poaceae

Valid name

Koeleria macrantha (Ledeb.) Schult.

Synonyms

Koeleria albescens auct.
Koeleria cristata auct. non Pers. p.p.
Koeleria cristata Pers. var. longifolia Vasey ex Burtt Davy
Koeleria cristata Pers. var. pinetorum Abrams
Koeleria gracilis Pers.
Koeleria nitida Nutt., nom. utique rej.
Koeleria pyramidata auct. non (Lam.) P. Beauv. p.p.
Koeleria yukonensis Hultén

 Koeleria macrantha.  Florets with a palea that is transparent and elevated out from the lemma.
Koeleria macrantha. Florets with a palea that is transparent and elevated out from the lemma.
 Koeleria macrantha.  Florets with a small lateral groove above the callus.
Koeleria macrantha. Florets with a small lateral groove above the callus.