Festuca rubra

Species category

Turf

Common name

red fescue, ravine 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 6 mm 
  • Width 1 mm 
  • Thickness 1 mm 

Color

Light brown

Texture

Smooth and glabrousGlabrous:
Lacking hairs or pubescence.

Lemma

Widest in the middle; short awned.

Palea

Deeply concave; 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

Groove above callusCallus:
The hard base of grass florets or spikelets, just above the point of disarticulation.
; rachillaRachilla:
The axis of a spikelet.
pressed outward.

Identification notes

FloretFloret:
A small flower in a clustered inflorescence (e.g., sunflower, grasses). In grasses, a floret consists of the lemma, palea, stamens, and pistil.
is more linear than found in other fescue species.

Noxious weed seed categories

Not listed

AOSA examination list

Included

More information

For more information, see ISMA fact sheet.

Nomenclature

Family

Poaceae

Valid name

Festuca rubra L.

 Festuca rubra.  Linear florets with the rachilla pressed outward. Brown caryopsis is also pictured.
Festuca rubra. Linear florets with the rachilla pressed outward. Brown caryopsis is also pictured.
 Festuca rubra.  Ventral / adaxial view of floret. Photo by Mark S. Towata, USDA-APHIS-PPQ.
Festuca rubra. Ventral / adaxial view of floret. Photo by Mark S. Towata, USDA-APHIS-PPQ.