Paspalum boscianum

Species category

Weed

Common name

bull crowngrass

Diagnostic characters

Planting unit

SpikeletSpikelet:
One or more florets that are subtended by a pair of bracts called glumes. Spikelets are pedicellate if located on a pedicle and sessile if attached directly to the rachis. Often spikelets with single florets have remnants of a second floret, usually a lemma.

Shape

OvalOval:
Broadly elliptic.
with one flat side

Size

  • Length 2–2.2 mm
  • Width 1.6–1.9 mm
  • Thickness 1.5–1.8 mm

Color

Light brown

Texture

Smooth with central longitudinal vein; glabrousGlabrous:
Lacking hairs or pubescence.

Lemma

Not visible

Palea

Not visible

Other structures

Wide scar at base

Identification notes

SpikeletSpikelet:
One or more florets that are subtended by a pair of bracts called glumes. Spikelets are pedicellate if located on a pedicle and sessile if attached directly to the rachis. Often spikelets with single florets have remnants of a second floret, usually a lemma.
missing the first glumeGlume:
The pair of chaffy bracts that occur at the base of a grass spikelet, often completely enclosing it.
, leaving the second glumeGlume:
The pair of chaffy bracts that occur at the base of a grass spikelet, often completely enclosing it.
and the sterile lemmaLemma:
One of two bracts of the grass floret; it is located on the side nearest the embryo and opposite the rachilla.
to cover 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.
.

Comments

 Paspalum boscianum has been merged with Paspalum scrobiculatum.

Noxious weed seed categories

Not listed

AOSA examination list

Not included

Nomenclature

Family

Poaceae

Valid name

Paspalum boscianum Flueggé

 Paspalum boscianum . Smooth spikelets with a glabrous central vein.
Paspalum boscianum. Smooth spikelets with a glabrous central vein.
From Left to Right: 1.  Paspalum boscianum  2.  Paspalum dilatatum  3.  Paspalum laeve  4.  Paspalum notatum  5.  Paspalum setaceum  var.  stramineum . The spikelet is missing the first glume.
From Left to Right: 1. Paspalum boscianum 2. Paspalum dilatatum 3. Paspalum laeve 4. Paspalum notatum 5. Paspalum setaceum var. stramineum. The spikelet is missing the first glume.