OregonFlora species comparison

intra- and extravaginal or mainly intravaginal.

intravaginal.

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 50% or more of their length;

ligules 1.5–5(10)mm, blades of tillers flat, 1–7(10) mm wide, finely scabrous;

cauline blades 2–10 cm.

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

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

erect, eventually open, 10–25(30)cm; the branches eventually spreading or reflexed.

3–4 mm, green or purple;

florets 2–3;

rachilla internodes less than 1 mm long; smooth.

(2)4– 6 mm;

florets 2–5;

rachilla internodes about 1 mm; smooth, softly puberulent or occasionally glabrous.

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.

slightly unequal;

keels and sometimes lateral veins scabrous;

lower glumes 1–3-veined.

glabrous.

with sparse cobwebby hairs on at least some florets.

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

keels and marginal veins rarely sparsely puberulent;

tips acute.

lanceolate to narrowly lanceolate, 2.5– 3.5 mm, distinctly keeled, evenly crisply puberulent near the base, finely scabrous distally;

margins narrowly hyaline;

tips narrowly acute, rarely purple.

0.2–0.8 mm.

0.2–1 mm.

nodes terete.

=14.