OregonFlora species comparison

intra- and extravaginal or partly extravaginal.

sheaths closed usually about 15% of their length;

ligules 1–4 mm long, blades of tillers 0.5–2 mm wide;

cauline blades flat, folded, 0.5–5 mm wide; smooth or scabrous.

erect, usually contracted, sometimes interrupted, 5–15 cm;

branches erect; less than 4 cm.

somewhat laterally compressed, 4–7 mm long;

florets 2–5;

rachilla internodes smooth.

2.5–3.5 mm long;

lower glumes 3-veined.

glabrous or with cobwebby hairs to 25% as long as the lemma.

narrowly lanceolate, 2.5–4.5 mm, distinctly to weakly keeled, glabrous throughout or keels and marginal veins sparsely long-villous;

tips acute.

aborted late in development or 1.3–2.2 mm.