OregonFlora species comparison

stout, 1.5–2 mm thick;

nodes terete, 0(1) exserted.

intra- and extravaginal or mainly intravaginal.

mainly intravaginal; some 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 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.

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

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

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.

3–4 mm, green or purple;

florets 2–3;

rachilla internodes less than 1 mm long; smooth.

9–17 mm; to 3 times as long as wide;

florets 3–6(10).

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.

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, 2.5–3 mm long, distinctly keeled; thin, glabrous;

keels and marginal veins rarely sparsely puberulent;

tips 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.

0.2–0.8 mm.

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

=14.

=28.