Panicum miliaceum subsp. ruderale

Species category

Weed

Common name

panicum, blackseeded proso millet, panic millet, proso, wild millet, wild proso millet, broomcorn millet

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 3–3.2 mm
  • Width 2–2.1 mm
  • Thickness 1–1.2 mm

Color

Brown with yellow veins; light brown on center of lemmaLemma:
One of two bracts of the grass floret; it is located on the side nearest the embryo and opposite the rachilla.

Texture

Shiny and smooth

Lemma

Hard, ovalOval:
Broadly elliptic.
and strongly arched

Palea

Hard, ovalOval:
Broadly elliptic.
, and arched

Other structures

Scar prominent.

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 consistently very dark brown, much darker than found in most Panicum miliaceum ssp. miliaceum.

Noxious weed seed categories

State Noxious Weed: Colorado, Wisconsin, Wyoming 

AOSA examination list

Not included

More information

For more information, see ISMA fact sheet, Panicum spp.

Nomenclature

Family

Poaceae

Valid name

Panicum miliaceum subsp. ruderale (Kitag.) Tzvelev

 Panicum milliaceium  ssp.  ruderale.  Dark brown florets with yellow veins. 
Panicum milliaceium ssp. ruderale. Dark brown florets with yellow veins.