OregonFlora species comparison

nodes terete or weakly compressed.

stout, 1.5–2 mm thick;

nodes terete, 0(1) exserted.

intravaginal.

mainly intravaginal; some 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 about 50% of their length, bases of basal sheaths glabrous;

collars smooth, glabrous;

ligules 1–5 mm;

blades moderately to densely scabrous or minutely hairy on and between veins, blades of tillers to 30 cm;

cauline blades involute; somewhat arcuate, 2–4 mm wide; uppermost blades 1–10 cm.

1–7(10)cm;

branches ascending to spreading or reflexed.

erect; ovoid to lanceolate, contracted, often interrupted, 3–15 cm;

spikelets 15–80;

branches 1-2; erect, 1–6 cm; stiff, with 3–17 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.

9–17 mm; to 3 times as long as wide;

florets 3–6(10).

lower glumes smooth, 1-veined.

broadly lanceolate, subequal to adjacent florets;

keels sparsely scabrous near tips;

lower glumes 3-veined;

upper glumes usually more than 7 mm, 3–5-veined.

glabrous.

usually with a line of crisp to sinuous hairs around the base of the lemma, sometimes glabrous or with diffuse; 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.

lanceolate; (6)7.5–11 mm, 5–7(11)-veined, distinctly keeled;

keels and marginal veins, sometimes also intermediate veins; short-villous to softly puberulent; area between veins smooth to scabrous, glabrous or softly puberulent;

tips acute.

0.6–1.1 mm, oblong.

vestigial and 0.1–0.2 mm, or (2)3–4(5)mm.

=28.

=28.