OregonFlora species comparison

not swollen at the base.

blades 5–10(15)cm × 2–5 mm.

obovoid to clavate, tapering at the base, rounded to truncate at the top, 3–9 × approximately 2 cm;

spikelets in clusters consisting of 1 terminal pistillate or bisexual spikelet surrounded by 5–6 staminate (or rarely sterile) spikelets;

branches obscure;

pedicels with stiff spreading hairs;

disarticulation beneath the spikelet cluster.

of 2 types; some staminate or sterile; others bisexual or pistillate;

florets 3; lower 2 florets sterile.

of staminate or sterile spikelets usually narrowly winged and to 9 mm; widest near the tip, those of the spikelets at the base of the panicle reduced to knobs of tissue terminating the pedicels, glumes of pistillate or bisexual spikelets 5–8 × approximately 1 mm;

keels winged;

wings 0.2–0.4 mm wide and forming a single prominent tooth;

tips unwinged, acuminate to awned; awns approximately 0.5 mm.

knob-like projections, 0.2–0.4 mm on the callus of the fertile floret, often with 1–2 hairs.

of all spikelets 2.5–3.5 mm;

lemmas hard; shiny, glabrous or with a few short hairs near the tip.

1.5–2.5 mm.

=14.