OregonFlora species comparison

retrorsely scabrous.

intra- and extravaginal or mainly intravaginal.

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 25–50% of their length, retrorsely scabrous;

ligules 2–3.5 mm;

blades flat, 3–8 mm wide.

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

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

open; sparse, 14–30 cm;

branches widely spreading, fairly straight; (5.5)8–12(15)cm, 1–3(4) per node, antrorsely scabrous, with 3–13 spikelets.

3–4 mm, green or purple;

florets 2–3;

rachilla internodes less than 1 mm long; smooth.

4–8 mm;

florets 2–4;

rachilla internodes about 1 mm long.

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.

keels scabrous;

lower glumes lanceolate, 3-veined but margins tending to roll up, often concealing the marginal veins and appearing 1-veined;

upper glumes shorter than or subequal to the lowest lemma.

glabrous.

with cobwebby hairs.

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

keels and marginal veins rarely sparsely puberulent;

tips acute.

lanceolate, 3.2–6 mm, distinctly keeled; smooth or sparsely finely scabrous;

keels longvillous to 67–75% of their length; marginal vein hairs sparse, intermediate veins usually glabrous, rarely sparsely puberulent, glabrous between the veins;

tips acute.

0.2–0.8 mm.

0.5–1.1 mm.

=14.