OregonFlora species comparison

intra- and extravaginal or mainly intravaginal.

mainly pseudointravaginal.

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 approximatly 90% of their length; to near the collar;

ligules 0.5–2 mm long;

blades flat, 1.5–5 mm wide.

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

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

lax, narrowly lanceolate, 6–22 cm; sparse;

branches ascending, 1–3 per node.

3–4 mm, green or purple;

florets 2–3;

rachilla internodes less than 1 mm long; smooth.

3.5–7 mm;

florets (1)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 1-veined;

upper glumes shorter than or subequal to lowest lemma.

glabrous.

with sparse cobwebby hairs.

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

keels and marginal veins rarely sparsely puberulent;

tips acute.

narrowly lanceolate, 3.2–5 mm long, distinctly keeled, glabrous; smooth;

tips acuminate.

0.2–0.8 mm.

0.5–1.2 mm.

=14.