OregonFlora species comparison

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

intra- and extravaginal or mainly intravaginal.

intraor extravaginal or mostly extravaginal.

sheaths closed to 25% of their length;

ligules 1–3 mm;

blades flat or folded, or slightly inrolled, 0.5–2 mm wide.

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.

erect, contracted, 1–3 cm long, usually exserted from the sheaths;

branches erect to steeply ascending; slender; to 1.5 cm.

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.

3–4 mm, green or purple;

florets 2–3;

rachilla internodes less than 1 mm long; smooth.

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.

lanceolate to broadly lanceolate, 2.4– 3.6(4) mm, usually equaling or exceeding the lowest lemma, frequently exceeding the upper florets;

lower glumes 3-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, 2.5–3 mm long, distinctly keeled; thin, glabrous;

keels and marginal veins rarely sparsely puberulent;

tips 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.

0.2–0.8 mm.

0.8–1.9 mm.

=14.

=28, 42.