Flora of North America species comparison

to 100 cm × 2 mm, scabrous.

loosely tufted or solitary, ascending or lax, 10–32 cm × 0.8–1.6 mm.

sheath fronts spotted red-brown or pale brown, apex truncate or short-convex, membranous or hyaline, rugose;

ligule retuse or rounded, to 2 mm, free limb to 0.2 mm;

blades 120 cm × 5 mm, longer than flowering stem.

basal sheaths light brown to brown;

sheaths green or yellow-green, 2–26 mm;

blades ascending, green or yellow-green, midrib well developed abaxially, 2 lateral veins well developed adaxially, flat, 18–44 cm × 12–14 mm, blades of owerwintering leaves smooth.

spicate, (3–)7–10 cm × 15 mm, with 10–15 branches, the proximal branches distinctly separate; the proximal internode to 25 mm;

bracts setaceous, those subtending at least the proximal lateral branches conspicuous.

peduncles of proximal spike to 6 cm, longer lateral ones 4.6–14 times as long as spikes they subtend, arising in proximal 1/3 of culm, distal lateral spikes not exserted;

peduncle of terminal spike 0–2.8 cm;

bracts 8–21 × 1–4 mm, blade of distal lateral spike linear, narrower than spikes, widest bract blade of distalmost lateral spike 0.5–3.4 mm wide.

3(–4) per culm;

lateral spikes 7–20 × 2.5–4.5 mm;

terminal spike 11–35 × 1.8–3 mm.

green to pale brown, veinless on both faces or 3-veined abaxially, body ovate or elliptic, 2–3.2 × 1.3–1.8 mm, base obtuse;

beak 0.8–1.2 mm, 1/3–1/2 length of perigynium.

6–18 per spike, closely to loosely overlapping, ratio of longer lateral spike length to perigynia number 0.8–2.4, aggregated, spreading, finely, conspicuously (22–)25–32-veined, narrowly elongate, 3–5.2 × 1.2–1.6 mm;

beak excurved, 0.4–1.7 mm.

red-brown, ovate, 1.2–1.4 × 1 mm, glossy.

elongate-obovoid, 2.2–3 × 1.2–1.6 mm.

pale brown, hyaline, awn to 3 mm.

scales 2–2.5 × 0.8–1.2 mm, apex acute or mucronate.

scales 3.2–4.2 × 1–1.2 mm, margins hyaline or brown tinged, apex acute.

3.5–4 mm.

= 52.