OregonFlora species comparison

erect.

erect to geniculate.

sheaths glabrous or pubescent;

blades 1.5–6 mm wide;

outer surfaces usually glabrous;

inner surfaces with appressed hairs.

sheaths with spreading hairs or glabrous proximally;

blades 6–10 mm wide, usually flat;

lower surfaces glabrous or sparsely pilose;

upper surfaces usually with sparse spreading hairs over the veins but sometimes glabrous.

3.5–26 cm; erect to slightly nodding, 1 spikelet per node but occasionally with 2 at a few nodes;

internodes 3.5–15 mm;

disarticulation above the glumes; beneath each floret.

5–15 cm, 1 spikelet per node but occasionally with 2 at a few nodes;

internodes 4–6(9.5)mm;

disarticulation above the glumes; beneath each floret.

8–31 mm, 1.5–3 times longer than the internodes, appressed, 3–11 florets, glabrous or hairy;

hairs to 1 mm.

10–27 mm, appressed to ascending, 4–7 florets.

5–14 mm, 50–75% the length of the adjacent lemmas, 0.7–1.3 mm wide, lanceolate, glabrous or hairy; smooth or scabrous, 3–5-veined; flat or weakly keeled;

keels straight;

margins narrow, tapering from the base or from beyond mid-length;

tips acute to acuminate, sometimes mucronate or short-awned.

oblong, glabrous; the midveins scabrous and keeled near the tip but smooth and relatively flat near the base; hyaline margins present in the distal half;

tips acute to acuminate; awnless or awned; to 3 mm;

lower glumes 8.8–11.4 mm, 3–6-veined;

upper glumes 7–12 mm, 5–7-veined.

7–12 mm, glabrous to densely long-hairy; all hairs similar, sometimes scabrous;

tips acute to awned;

lemma awns; if present; to 2 mm; straight.

8–12 mm, glabrous, mostly smooth but sometimes minutely scabrous distally; awnless or awned;

lemma awns 0–4(10)mm; straight.

2.5–6 mm.

4–7 mm.

=22, 42.