OregonFlora species comparison

solitary or branched at the base.

sheaths glabrous or hairy;

blades 6–15(20)mm wide, glabrous or pubescent.

sheaths open;

auricles present, often deciduous at maturity;

ligules truncate, membranous;

blades flat.

spikes (3.5)6–18 × 0.8– 2.1 cm;

disarticulation tardy or not disarticulating.

terminal, 2-sided spikes with 1 spikelet per node;

internodes (0.5)1.4–8 mm;

disarticulation in the rachis;

spikelets usually falling with the internode below or sometimes falling with the internode above, cultivated taxa usually not disarticulating.

10–15 mm, 2 florets.

usually 1–3 times the length of the internodes, appressed to ascending, 2–9 florets; the distal florets usually sterile.

subequal; shorter than adjacent lemmas; hairy; short-awned;

upper glumes 6–12 mm, 4–7-veins.

subequal; ovate, rectangular, or lanceolate; thick, usually sti?, keeled distally; the keels often winged and ending in a tooth or awn; some taxa with a second keel or prominent lateral vein.

tightly or loosely enclosed by the glumes and lemmas.

10–15 mm, 0–several veins, mostly glabrous, scabrous;

hairs near apex;

tips toothed or awned;

lemma awns; if present; straight or curved; to 8(12)mm, arising from the apex.

keeled; papery or leathery in texture; the 2 lowest lemmas usually awned;

distal lemmas awned or awnless;

lemma awns 3–23 mm on lower lemmas; to 20 mm on upper lemmas, arising from the apex.

2.5 mm.

3.

=42.