OregonFlora species comparison

wiry, strongly compressed;

nodes strongly compressed; some proximal nodes usually exserted.

mostly extravaginal.

intra- and extravaginal or mostly extravaginal.

sheaths closed 25–67% of their length; smooth or sparsely scabrous;

ligules 1.5– 4(6)mm;

blades flat, 1–4 mm wide.

sheaths closed to 20% of their length;

ligules 1–3 mm;

blades flat, 1.5–4 mm wide;

cauline blades subequal.

lax; open; sparse, 5–15 cm;

branches spreading to reflexed; capillary; (2)3– 8 cm, 1–3(5) per node, usually moderately scabrous, with (3)4– 15 spikelets.

erect, lanceoloid to ovoid, often interrupted; sparse to congested, 2–10 cm;

spikelets 15–80;

branches erect to ascending, or infrequently spreading, 0.5–3 cm, 1–3 per node, with 1–15 spikelets.

lanceolate or narrowly lanceolate, 4–8 mm, green, or partly purple to dark purple;

florets 2–5.

(2.3)3.5–7 mm;

florets (2)3–7(8).

tapered from the base or lanceolate; thin;

keels usually scabrous;

lower glumes 1-veined;

upper glumes distinctly shorter than to nearly equaling lowest lemma.

lower glumes 3-veined.

with sparse cobwebby hairs.

with cobwebby hairs; less often glabrous.

lanceolate, 3–4 mm, often partly purple, distinctly keeled; thin; smooth, or sparsely scabrous near the tip;

keels softly puberulent to long-villous on 25–67% the length; marginal veins softly puberulent to long-villous;

hairs frequently sparse;

lateral veins and area between veins glabrous;

margins infolded;

tips sharply acute to acuminate, usually bronze-colored.

lanceolate, 2.3–3.5 mm, distinctly keeled;

keels and marginal veins short-villous; area between veins glabrous;

tips acute.

0.2–1.1 mm.

1.3–1.8 mm.

=42.

=42.