OregonFlora species comparison

nodes terete or weakly compressed.

0.5–0.7 mm thick;

nodes 0–1 exserted.

intravaginal.

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 40–60% of their length, bases of basal sheaths glabrous;

collars smooth, glabrous;

ligules (1)2–4 mm long; hyaline; smooth, sterile shoot ligules like those of the culm leaves, blades of tillers with lower surfaces smooth or sparsely scabrous;

cauline blades flat, folded or involute, 0.5–1(1.5)mm wide, usually soon withering; smooth or sparsely scabrous.

1–7(10)cm;

branches ascending to spreading or reflexed.

erect to lax, lanceoloid to ovoid or pyramidal, contracted to open, 1–5(8) cm;

spikelets (1)6–17(22);

branches erect to spreading; slender, 1–4 cm, 1–2 per node, with 1–2(3) 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.

broadly lanceolate to broadly ovate; to 3 times as long as wide, 4–8 mm;

florets 2–3;

rachilla internodes glabrous.

lower glumes smooth, 1-veined.

thin; somewhat shiny;

lower glumes 3-veined, distinctly shorter than the lowest lemma.

glabrous.

glabrous.

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, 3.5–7 mm, distinctly keeled, thinly membranous; smooth or scabrous, glabrous;

tips acute to truncate and erose.

0.6–1.1 mm, oblong.

vestigial and 0.1–0.2 mm, or 1.3–3 mm.

=28.