Danthonia intermedia

Species category

Weed

Common name

timber oatgrass

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

Oblong

Size

  • Length 4.5–5 mm
  • Width 2.5–3 mm
  • Thickness 2.5–3 mm

Color

Light brown

Texture

Smooth

Lemma

Smooth with a central longitudinal nerve termination in an awnAwn:
A narrow, bristle-like organ, as on the glumes or lemmas of grasses (Poaceae).

Palea

Smooth and papery; the apexApical:
The distal end of the fruit or seed away from the point of attachment or attachment scar.
is transparent.

Other structures

The central awnAwn:
A narrow, bristle-like organ, as on the glumes or lemmas of grasses (Poaceae).
is coiled at the basalBasal:
The base of the fruit or seed opposite the apical end.
half and is flat terminally.

Identification notes

The central awnAwn:
A narrow, bristle-like organ, as on the glumes or lemmas of grasses (Poaceae).
begins about one-fourth of the distance to the lemma apexApical:
The distal end of the fruit or seed away from the point of attachment or attachment scar.
. The lemmaLemma:
One of two bracts of the grass floret; it is located on the side nearest the embryo and opposite the rachilla.
is split on the apicalApical:
The distal end of the fruit or seed away from the point of attachment or attachment scar.
end, forming two lateral pointed awnsAwn:
A narrow, bristle-like organ, as on the glumes or lemmas of grasses (Poaceae).
.

Noxious weed seed categories

Not listed

AOSA examination list

Not included

Nomenclature

Family

Poaceae

Valid name

Danthonia intermedia Vasey 

Synonyms

Danthonia canadensis Baum & Findlay
Danthonia intermedia Vasey var. cusickii T.A. Williams

 Danthonia intermedia.  Florets with a lemma that is split on the apical end, forming two lateral pointed awns.
Danthonia intermedia. Florets with a lemma that is split on the apical end, forming two lateral pointed awns.