OregonFlora species comparison

nodes terete or weakly compressed.

nodes terete, 0–1 exserted.

intravaginal.

extra- and intravaginal.

sheaths closed about 33% of their length;

ligules 0.5–3(5) mm;

blades flat or weakly folded, 1–10 cm × 1–3(6)mm; smooth.

sheaths closed 33–50% of their length, bases of basal sheaths glabrous, collars of at least some leaves usually sparsely short-hairy;

ligules 1–2 mm, blades of tillers to 40 cm long;

upper surface moderately to densely scabrous or minutely hairy on and between the veins;

cauline blades involute, 1–3 mm wide;

lower surfaces smooth;

upper surfaces sometimes sparsely hairy;

blades much reduced higher on the culm; uppermost blades 1–4.5 cm.

1–7(10)cm;

branches ascending to spreading or reflexed.

erect to nodding, lanceoloid to ovoid, loosely contracted; sparse, 4–8 cm;

spikelets 18–60;

branches ascending; lax, 3–8 cm long, 1–2 per node, with 3–8 spikelets.

3–5 mm long;

florets 2–6;

rachilla internodes smooth, glabrous; more or less concealed, occasionally exposed;

distal rachilla internode less than 50(75)% of the length of distal lemma.

6–9(11)mm; to 3 times as long as wide;

florets 2–5(7);

rachilla internodes 1–2 mm long.

lower glumes smooth, 1-veined.

subequal;

lower glumes 3-veined.

glabrous.

with diffuse; soft cobwebby hairs about 50% as long as the lemma.

lanceolate, 2.5–4 mm, keeled; smooth; keels; marginal veins; and usually intermediate veins crisply puberulent to long-villous, rarely glabrous; area between veins glabrous;

tips obtuse to acute.

lanceolate, 4–6(7)mm, distinctly keeled, glabrous throughout; smooth or sparsely to moderately finely scabrous;

keels scabrous;

tips acute.

0.6–1.1 mm, oblong.

vestigial and 0.1–0.2 mm, or 2–3 mm.

=28.

=28.