OregonFlora species comparison

sheaths glabrous or sparsely pubescent, often pubescent near the top;

blades 1.5–9 cm × 3–5 mm; flat, glabrous, sometimes with a few papillose-based hairs on margins near base.

sheaths with sparse papillose-based hairs;

blades 2–11(14) cm × 3–8(12) mm; flat, usually with papillose-based hairs on both surfaces, sometimes glabrous.

often purple with 2–7 spike-like branches, 6–15.5 cm × 0.7–2.5 mm, ascending to spreading.

often purple, with 4–13 spike-like primary branches 3–30 cm × 0.7–1.5 mm, ascending to spreading.

1.7–2.3 mm.

1.7–3.4 mm.

lower glumes absent or reduced to a membranous rim;

upper glumes 1.3–2.3 mm, 3-veined, 75% to as long as the upper lemmas with appressed hairs that may form whitish lines between the veins or cover the entire surface.

lower glumes 0.2–0.4 mm;

upper glumes 0.9–2 mm, 33–50% as long as the spikelets, 3-veined, pubescent on the margins.

lower lemmas 1.7–2.3 mm, pubescent, 7-veined, 3 middle veins usually widely spaced; outer veins tightly spaced and near the margins; upper lemmas stiff, pubescent, dark brown at maturity;

tips acute; awnless.

lower lemmas less than to 0.2 mm longer than the upper floret, glabrous, 7-veined;

lateral or all veins scabrous throughout or smooth on the lower 33–50% and scabrous distally, 3 middle veins usually widely spaced; outer veins tightly spaced and near the margins; upper lemmas 1.7–3 mm, yellow or gray, often purple-tinged when young and becoming brown at maturity.

0.4–0.6 mm.

0.5–0.9 mm.

=36.

=36, 28, 34, 54.