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 1.2–6.3 mm, truncate to rounded; erose-lacerate;

blades 10–30 cm × (1)2–5 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.

8–35(70) × (1.5)2.5–20 cm, usually 3 times longer than wide; open; lowest node with 1–15 branches, usually dark red or purple;

branches ascending;

spikelets somewhat clustered toward the branch tips; lower branches 2–10 cm;

primary branches branched above mid-length.

1.6–3 mm, 1-veined;

tips acute to acuminate or with a minute point.

2–3.6 mm, 1(3)-veined, scabrous on the midvein, occasionally minutely scabrous over the body; acute to acuminate.

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.

1.5–2.5 mm, usually smooth, sometimes minutely scabrous or pubescent, 5-veined;

veins sometimes extended into teeth to 0.4 mm;

tips acute to obtuse, usually entire to toothed, usually awnless but sometimes with awned and awnless spikelets on the same plant;

lemma awns 0–2 mm, arising from about mid-length; straight (rarely bent), not exserted.

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

absent or to 0.2 mm and thin.

3, 0.9–1.4 mm.

0.5–1.2 mm.

=28.