OregonFlora species comparison

nodes terete or weakly compressed.

nodes slightly compressed, 2–5 exserted; the uppermost node in upper 25–50% of culm.

intravaginal.

intraor extravaginal or mostly 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 to 20% of their length, bases of basal sheaths glabrous;

ligules 0.2– 0.8(1)mm long, truncate;

blades mostly flat, 0.8–3 mm wide.

1–7(10)cm;

branches ascending to spreading or reflexed.

narrowly lanceoloid to ovoid, generally 25–40% as broad as long at maturity; erect, or nodding in shade forms, sparsely to moderately congested, 7–16(20) cm long;

branches ascending to widely spreading, 2–5 per node, fairly straight.

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.

narrowly lanceolate to lanceolate; to 2.5–3.5 times as long as wide, 3–8 mm, usually not glaucous;

florets (1)2–5;

rachilla internodes mostly less than 1 mm.

lower glumes smooth, 1-veined.

tapering from the base or narrowly lanceolate;

keels smooth or sparsely scabrous;

lower glumes 3-veined, 6.4–11 times as long as wide;

upper glumes shorter than or subequal to lowest lemma.

glabrous.

with sparse, often short; cobwebby hairs.

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 to lanceolate, 2.4–4 mm; lower lemmas less than 20% as wide as long, distinctly keeled;

keels and marginal veins short-villous, intermediate veins glabrous; area between veins smooth or muriculate, glabrous;

tips acute, usually bronzecolored in part.

0.6–1.1 mm, oblong.

0.8–1.9 mm.

=28.

=28, 42.