Hordeum brachyantherum subsp. californicum

Species category

Weed

Common name

California barley

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

Triangular

Size

  • Length 8–10 mm
  • Width 2–3 mm
  • Thickness 1.5–2 mm

Color

Brown

Texture

Smooth

Lemma

ApicalApical:
The distal end of the fruit or seed away from the point of attachment or attachment scar.
end has a long awnAwn:
A narrow, bristle-like organ, as on the glumes or lemmas of grasses (Poaceae).
.

Palea

Visible with margins close together

Other structures

Central fertile 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 large, but lateral sterile floretsFloret:
A small flower in a clustered inflorescence (e.g., sunflower, grasses). In grasses, a floret consists of the lemma, palea, stamens, and pistil.
are small.

Identification notes

Each 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 subtended by two linear glumesGlume:
The pair of chaffy bracts that occur at the base of a grass spikelet, often completely enclosing it.
. Lateral sterile floretsFloret:
A small flower in a clustered inflorescence (e.g., sunflower, grasses). In grasses, a floret consists of the lemma, palea, stamens, and pistil.
have a 1 mm rachis.

Noxious weed seed categories

Not listed

AOSA examination list

Not included

Nomenclature

Family

Poaceae

Valid name

Hordeum brachyantherum subsp. californicum (Covas & Stebbins) Bothmer, N. Jacobsen & Seberg

Synonyms

Critesion californicum (Covas & Stebbins) N. Jacobsen & Seberg
Hordeum californicum Covas & Stebbins

 Hordeum brachyantherum  subsp . californicum.  Spikelets with central fertile florets that are large, but lateral sterile florets are small. 
Hordeum brachyantherum subsp. californicum. Spikelets with central fertile florets that are large, but lateral sterile florets are small.