Leptochloa dubia

Species category

Revegetation or Rangeland, Turf

Common name

green spangletop, green sprangletop

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

Rectangular

Size

  • Length 3–4 mm
  • Width 1–1.2 mm
  • Thickness 0.5–0.6 mm

Color

Grayish-brown

Texture

GlabrousGlabrous:
Lacking hairs or pubescence.

Lemma

Broad, truncate, and notched at apexApical:
The distal end of the fruit or seed away from the point of attachment or attachment scar.
; strong central and lateral nerves.

Palea

Shorter than lemmaLemma:
One of two bracts of the grass floret; it is located on the side nearest the embryo and opposite the rachilla.
; dark colored.

Other structures

RachillaRachilla:
The axis of a spikelet.
is slender with wide disc at apexApical:
The distal end of the fruit or seed away from the point of attachment or attachment scar.
.

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.
wide at both the apexApical:
The distal end of the fruit or seed away from the point of attachment or attachment scar.
and base. There is a wide space between the rachillaRachilla:
The axis of a spikelet.
and the margins of the lemmaLemma:
One of two bracts of the grass floret; it is located on the side nearest the embryo and opposite the rachilla.
at the broad base of the floretFloret:
A small flower in a clustered inflorescence (e.g., sunflower, grasses). In grasses, a floret consists of the lemma, palea, stamens, and pistil.
. CaryopsisCaryopsis:
The single-seeded fruit or grain of the grass family (Poaceae); the fruit wall (pericarp) is united with the seed coat (testa).
is ovalOval:
Broadly elliptic.
.

Noxious weed seed categories

Not listed

AOSA examination list

Included

Nomenclature

Family

Poaceae

Valid name

Leptochloa dubia (Kunth) Nees

Synonyms

Chloris dubia Kunth
Diplachne dubia (Kunth) Scribn.

 Leptochloa dubia.  Florets with oval caryopses and a slender rachilla with a wide disc at the apex.
Leptochloa dubia. Florets with oval caryopses and a slender rachilla with a wide disc at the apex.