OregonFlora species comparison

intravaginal and extravaginal or mainly intravaginal.

sheaths closed up to 33% of their length, ligules of cauline leaves 1–3 mm, ligules of uppermost tiller leaves 0.5–2.5 mm long, blades of tillers with upper surface scabrous, minutely hairy, or puberulent on and between the veins;

cauline blades folded to involute; uppermost blades 1–2 mm wide.

erect, narrowly lanceoloid, contracted, moderately congested, 3–6 cm;

branches erect; slender; to 1.5 cm, 1–2 per node.

4.2–7 mm, often purple;

florets 2–4;

rachilla internodes 1–1.5 mm long; smooth, sometimes sparsely hispidulous.

lanceolate; (3.3)4.3– 5.7 mm;

lower glumes shorter than to equal to the lowest lemma, 3-veined;

upper glumes frequently longer than the lowest lemma, 3–5-veined, not exceeding the upper florets.

glabrous.

narrowly lanceolate, 4.1–5.8 mm; more or less keeled; thin, glabrous or sometimes puberulent;

tips acute.

usually 0.8–1.2(1.7)mm, occasionally aborted late in development.