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 (1)1.7–8(11.2) mm, truncate to obtuse;

blades 4–15(25) cm × 2–7 mm; 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.

(3)5–30 × 0.5–4 cm, contracted; spike-like, usually dense, sometimes interrupted near the base, bases usually exserted from the upper sheaths at maturity; lowest node with 1–5 branches;

branches ascending to appressed;

spikelet-bearing to or near the base, usually hidden by the spikelets; lower branches 1–2(4) cm.

crowded.

1.6–3 mm, 1-veined;

tips acute to acuminate or with a minute point.

1.5–3.5 mm, scabrous on the midvein and sometimes on the back, 1(3)-veined;

tips acute or long-acuminate, with an awn-like tip to 1 mm.

with sparse hairs to 0.5 mm.

with sparse to abundant hairs up to 0.3 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.

1.2–2.2 mm; smooth, 5-veined;

veins sometimes extended as teeth to 0.1 mm;

tips acute; entire to toothed; awnless or awned;

lemma awns 0–3.5 mm, arising from above mid-length; straight or bent.

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

absent or to 0.5 mm.

3, 0.9–1.4 mm.

3, 0.3–0.6 mm.

0.3–0.5 mm.

=28.

=28, 42, 56.