Piptatheropsis micrantha

Species category

Revegetation or Rangeland, Turf

Common name

littleseed ricegrass

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

EllipticElliptic:
Outline of an ellipse; greatest width midway sloping to an equally pointed apex and base.

Size

  • Length 2–2.4 mm
  • Width 0.8–1 mm
  • Thickness 0.7–0.9 mm

Color

Dark brown

Texture

Shiny

Lemma

Sparce silky hairs

Palea

Sparce silky hairs

Other structures

GlumesGlume:
The pair of chaffy bracts that occur at the base of a grass spikelet, often completely enclosing it.
are papery when attached.

Identification notes

Light striations on floretsFloret:
A small flower in a clustered inflorescence (e.g., sunflower, grasses). In grasses, a floret consists of the lemma, palea, stamens, and pistil.
and glumesGlume:
The pair of chaffy bracts that occur at the base of a grass spikelet, often completely enclosing it.
.

Noxious weed seed categories

Not listed

AOSA examination list

Not included

Nomenclature

Family

Poaceae

Valid name

Piptatheropsis micrantha (Trin. & Rupr.) Romasch., P.M. Peterson & R.J. Soreng

Synonyms

Oryzopsis micrantha (Trin. & Rupr.) Thurb.
Piptatherum micranthum
(Trin. & Rupr.) Barkworth
Stipa divaricata Columbus & J.P. Smith

 Piptatheropsis micrantha.  Florets with light striations on the florets and glumes.
Piptatheropsis micrantha. Florets with light striations on the florets and glumes.