Flora of North America species comparison

to 100 cm × 2 mm, scabrous.

aphyllopodic, smoothly 3-angled, 8–40 cm.

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.

sheath white-hyaline adaxially, summit U-shaped, smooth;

distal ligule 0.5–4.3 mm;

blades 0–3 per culm, 12 cm × 1.2–3 mm.

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.

green or pale brown, 1.6–3 cm × 7–15 mm;

proximal internode (2–)4–8 mm, 2d internode 1.7–4 mm;

bracts appressed to ascending.

3–8, densely clustered except, often, the proximal 1–2, obovoid-oblanceoloid, 10–16 × 5–7 mm, base acute to acuminate, apex truncate.

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.

appressed, green or gold to light brown, conspicuously 3–12-veined abaxially, 0–9-veined adaxially, wing 0.1–0.15(–0.2) mm wide, narrowly lanceolate, (4.6–)5.5–7.3 × 0.7–1.2 mm, 0.3–0.4 mm thick;

beak tip white, green, or gold, narrowly flat, distance from beak tip to achene 3–5 mm, ± ciliate-serrulate.

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

elliptic to ovate, 1–1.8 × 0.6–0.8 mm, 0.3–0.4 mm thick.

pale brown, hyaline, awn to 3 mm.

scales white- or gold-hyaline with green or gold midstripe, lanceolate to ovate, to 3.5–4.5 mm, shorter than or longer than perigynia.

= 52.

= 64.