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Festuca thurberi

Species category

Revegetation or Rangeland, Turf

Common name

Thurber's fescue

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 5.5–6.5 mm 
  • Width 1.1–1.5 mm 
  • Thickness 1.1–1.5 mm

Color

Brown

Texture

Smooth

Lemma

Awnless; longitudinal ribs evident.

Palea

Longitudinal groove in center

Other structures

RachillaRachilla:
The axis of a spikelet.
 glabrous

Identification notes

RachillaRachilla:
The axis of a spikelet.
 with flared apexApical:
The distal end of the fruit or seed away from the point of attachment or attachment scar.
. Indentation 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

Festuca thurberi Vasey

Festuca thurberi. Florets with a longitudinal groove in the center of the palea. Caryopsis is also pictured.
Festuca thurberi. Florets with a longitudinal groove in the center of the palea. Caryopsis is also pictured.
Festuca thurberi. Florets with an indentation above the callus.
Festuca thurberi. Florets with an indentation above the callus.