OregonFlora species comparison

ligules of sterile shoots longer than wide;

basal ligules 0.7–4 mm; upper ligules 3–7.5 mm;

blades 2–10 cm × 2–6 mm; flat.

ligules 0.7–5 mm;

tips usually rounded, sometimes truncate or acute; erose-ciliate;

blades 4–14 cm × 1–2 mm;

basal blades mostly involute;

cauline blades usually flat.

(3)4–20 × 0.5–3(6)cm, contracted, oblong to lanceolate, with 1–7 branches at the lowest node;

branches ascending to appressed, contracted after anthesis; some branches at each node spikelet-bearing to the base.

(4)8–25(50) × 0.5–20 cm; diffuse, often almost as wide as long; lowest node with (1)2– 7(12) branches;

branches capillary; flexible, strongly spreading, not spikelet-bearing and usually not branched on the lower 50%, dark purple; lower branches 4–12 cm;

disarticulation at the panicle base and beneath the florets.

1.6–3 mm, 1-veined;

tips acute to acuminate or with a minute point.

1-veined;

keels scabrous at least distally;

tips acuminate;

lower glumes 1.8– 3.4 mm;

upper glumes slightly shorter.

with sparse hairs to 0.5 mm.

with sparse hairs to 0.2 mm.

1.4–2 mm; smooth, 5-veined;

veins sometimes excurrent to about 0.1 mm;

tips acute to obtuse, often entire, usually awnless;

lemma awns; if present, 0–1 mm long, arising near the tip; straight.

1.4–2 mm, scabrous to smooth, 5-veined;

veins extended into minute teeth;

tips acute to obtuse, usually entire; awnless or awned;

lemma awns; if present, 0.2– 3 mm, arising below mid-length; bent or straight.

0.7–1.4 mm; at least as long as the lemmas.

absent or to 0.3 mm.

3, 0.9–1.4 mm.

0.4–0.8 mm, usually not retained after anthesis.

=28.

=42.