OregonFlora species comparison

0.5–0.7 mm thick;

nodes 0–1 exserted.

mostly extravaginal.

intravaginal.

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 40–60% of their length, bases of basal sheaths glabrous;

collars smooth, glabrous;

ligules (1)2–4 mm long; hyaline; smooth, sterile shoot ligules like those of the culm leaves, blades of tillers with lower surfaces smooth or sparsely scabrous;

cauline blades flat, folded or involute, 0.5–1(1.5)mm wide, usually soon withering; smooth or sparsely scabrous.

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 to lax, lanceoloid to ovoid or pyramidal, contracted to open, 1–5(8) cm;

spikelets (1)6–17(22);

branches erect to spreading; slender, 1–4 cm, 1–2 per node, with 1–2(3) spikelets.

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

florets 2–5.

broadly lanceolate to broadly ovate; to 3 times as long as wide, 4–8 mm;

florets 2–3;

rachilla internodes glabrous.

tapered from the base or lanceolate; thin;

keels usually scabrous;

lower glumes 1-veined;

upper glumes distinctly shorter than to nearly equaling lowest lemma.

thin; somewhat shiny;

lower glumes 3-veined, distinctly shorter than the lowest lemma.

with sparse cobwebby hairs.

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, 3.5–7 mm, distinctly keeled, thinly membranous; smooth or scabrous, glabrous;

tips acute to truncate and erose.

0.2–1.1 mm.

vestigial and 0.1–0.2 mm, or 1.3–3 mm.

=42.