Setaria pumila subsp. pallidefusca

Species category

Weed

Common name

cattail grass, Queensland pigeon 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

OvalOval:
Broadly elliptic.

Size

  • Length 2.8–3 mm 
  • Width 1.8–2 mm 
  • Thickness 1.5–1.7 mm 

Color

Yellow to dark brown

Texture

LemmaLemma:
One of two bracts of the grass floret; it is located on the side nearest the embryo and opposite the rachilla.
and paleaPalea:
One of the thin bracts of grass floret enclosing the fruit (caryopsis) that is located on the side opposite the embryo.
surfaces are uniformly covered with rows of stipplesStipples:
Numerous small dots or specks.
.

Lemma

Covered with transverseTransverse:
Set crosswise, crossing or at right angles.
ridges of stipplesStipples:
Numerous small dots or specks.

Palea

Covered with longitudinal lines of stipplesStipples:
Numerous small dots or specks.

Other structures

The shiny margins of the paleaPalea:
One of the thin bracts of grass floret enclosing the fruit (caryopsis) that is located on the side opposite the embryo.
are covered by the lemmaLemma:
One of two bracts of the grass floret; it is located on the side nearest the embryo and opposite the rachilla.
.

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.
often covered with papery glumesGlume:
The pair of chaffy bracts that occur at the base of a grass spikelet, often completely enclosing it.
.

Noxious weed seed categories

Federal

Learn more on ITP's Federal Noxious Weed Disseminules tool.

AOSA examination list

Not included

Nomenclature

Family

Poaceae

Valid name

Setaria pumila (Poir.) Roem. & Schult. subsp. pallidefusca (Schumach.) B.K. Simon

Synonyms

Panicum pumilum auct. non Poir.
Setaria glauca (L.) P. Beauv. var. pallidifusca (Schumach.) T. Koyama, orth. var.
Setaria glauca (L.) P. Beauv. var. pallidefusca (Schumach.) T. Koyama
Setaria pallidefusca (Schumach.) Stapf & C.E. Hubbard
Setaria pallidifusca
(Schumach.) Stapf & C.E. Hubbard, orth. var.
Setaria pumila (Poir.) Roem. & Schult. ssp. pallidifusca (Schumach.) B.K. Simon, orth. var.

 Setaria pumila  ssp.  pallidefusca.  Florets with the lemma and palea surfaces uniformly covered with rows of stipples. Photo by Julia Scher, USDA-APHIS-PPQ.
Setaria pumila ssp. pallidefusca. Florets with the lemma and palea surfaces uniformly covered with rows of stipples. Photo by Julia Scher, USDA-APHIS-PPQ.
 Setaria pumila  ssp.  pallidefusca.  Florets with the lemma and palea surfaces uniformly covered with rows of stipples. Photo by Julia Scher, USDA-APHIS-PPQ.
Setaria pumila ssp. pallidefusca. Florets with the lemma and palea surfaces uniformly covered with rows of stipples. Photo by Julia Scher, USDA-APHIS-PPQ.
 Setaria pumila  ssp.  pallidefusca.  Florets are often covered with papery glumes.Photo by Julia Scher, USDA-APHIS-PPQ.
Setaria pumila ssp. pallidefusca. Florets are often covered with papery glumes.Photo by Julia Scher, USDA-APHIS-PPQ.
 Setaria pumila  ssp.  pallidefusca.  Florets with shiny margins of the palea that are covered by the lemma. Photo by Julia Scher, USDA-APHIS-PPQ.
Setaria pumila ssp. pallidefusca. Florets with shiny margins of the palea that are covered by the lemma. Photo by Julia Scher, USDA-APHIS-PPQ.