OregonFlora species comparison

nodes terete or weakly compressed.

intravaginal.

intra- and extravaginal or partly extravaginal.

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 usually about 15% of their length;

ligules 1–4 mm long, blades of tillers 0.5–2 mm wide;

cauline blades flat, folded, 0.5–5 mm wide; smooth or scabrous.

1–7(10)cm;

branches ascending to spreading or reflexed.

erect, usually contracted, sometimes interrupted, 5–15 cm;

branches erect; less than 4 cm.

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.

somewhat laterally compressed, 4–7 mm long;

florets 2–5;

rachilla internodes smooth.

lower glumes smooth, 1-veined.

2.5–3.5 mm long;

lower glumes 3-veined.

glabrous.

glabrous or with cobwebby hairs to 25% 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.

narrowly lanceolate, 2.5–4.5 mm, distinctly to weakly keeled, glabrous throughout or keels and marginal veins sparsely long-villous;

tips acute.

0.6–1.1 mm, oblong.

aborted late in development or 1.3–2.2 mm.

=28.