Poa nemoralis

Species category

Revegetation or Rangeland

Common name

wood bluegrass, forest blue grass

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 2.2–3 mm
  • Width 0.5–0.7 mm
  • Thickness 0.5–0.7 mm

Color

Light brown

Texture

Nerves of lemmaLemma:
One of two bracts of the grass floret; it is located on the side nearest the embryo and opposite the rachilla.
are pubescentPubescent:
Having hairs.
; hairs on the upper portion of the margins are short and fine.

Lemma

Intermediate nerves lacking or only on basalBasal:
The base of the fruit or seed opposite the apical end.
half; long-pointed.

Palea

Same length as 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.
has stiff and bristly hairs.

Identification notes

Midnerves on the lemmaLemma:
One of two bracts of the grass floret; it is located on the side nearest the embryo and opposite the rachilla.
are absent or only on the basalBasal:
The base of the fruit or seed opposite the apical end.
half. Hairs on upper portion of the paleaPalea:
One of the thin bracts of grass floret enclosing the fruit (caryopsis) that is located on the side opposite the embryo.
margins are short, fine, dense and extend to the tip of the paleaPalea:
One of the thin bracts of grass floret enclosing the fruit (caryopsis) that is located on the side opposite the embryo.
. Hairs are longer and wide- spaced below the middle.

Noxious weed seed categories

Not listed

AOSA examination list

Not included

Nomenclature

Family

Poaceae

Valid name

Poa nemoralis L.

Synonyms

Poa nemoralis L. ssp. nemoralis

From Left to Right: 1.  Poa annua  2.  Poa compressa  3.  Poa nemoralis  4.  Poa pratensis  5.  Poa trivialis.  Florets with stiff and bristly rachilla hairs.
From Left to Right: 1. Poa annua 2. Poa compressa 3. Poa nemoralis 4. Poa pratensis 5. Poa trivialis. Florets with stiff and bristly rachilla hairs.
 Poa nemoralis.  Florets with midnerves on the lemma that are absent or only on the basal half.
Poa nemoralis. Florets with midnerves on the lemma that are absent or only on the basal half.