Eriochloa punctata

Species category

Weed

Common name

Louisiana cupgrass

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

Lanceolate

Color

Light brown

Texture

Sparse, appressedAppressed:
Pressed close or lying flat against something.
hairs on the surface of the second glumeGlume:
The pair of chaffy bracts that occur at the base of a grass spikelet, often completely enclosing it.
and the lemmaLemma:
One of two bracts of the grass floret; it is located on the side nearest the embryo and opposite the rachilla.

Lemma

OvalOval:
Broadly elliptic.
; usually covered by the second glumeGlume:
The pair of chaffy bracts that occur at the base of a grass spikelet, often completely enclosing it.
and sterile lemmaLemma:
One of two bracts of the grass floret; it is located on the side nearest the embryo and opposite the rachilla.
.

Palea

OvalOval:
Broadly elliptic.
; usually covered by the second glumeGlume:
The pair of chaffy bracts that occur at the base of a grass spikelet, often completely enclosing it.
and sterile lemmaLemma:
One of two bracts of the grass floret; it is located on the side nearest the embryo and opposite the rachilla.
.

Other structures

Knob-like structure at the base of the 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.

Identification notes

The unit can be found as a 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.
, floretFloret:
A small flower in a clustered inflorescence (e.g., sunflower, grasses). In grasses, a floret consists of the lemma, palea, stamens, and pistil.
, or caryopsis, but usually as a 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.
. The spikeletsSpikelet:
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.
of different Eriochloa spp. are very difficult to differentiate.

Noxious weed seed categories

Not listed

AOSA examination list

Not included

Nomenclature

Family

Poaceae

Valid name

Eriochloa punctata (L.) Desv. ex Ham.

Synonyms

Milium punctatum L.

From Left to Right: 1.  Eriochloa punctata  2.  Eriochloa aristata . Spikelets with a knob-like structure at the base. 
From Left to Right: 1. Eriochloa punctata 2. Eriochloa aristata. Spikelets with a knob-like structure at the base. 
 From Left to Right: 1:  Eriochloa aristata  2.  Eriochloa punctata . Spikelets with sparse, appressed hairs on the surface of the second glume and the lemma.
From Left to Right: 1: Eriochloa aristata 2. Eriochloa punctata. Spikelets with sparse, appressed hairs on the surface of the second glume and the lemma.