Flora of North America species comparison

to 80 cm × 3–8 mm, scabrous.

to 100 cm × 2 mm, scabrous.

sheath fronts not spotted, slightly thickened near hyaline margins, apex convex, membranous, rugose;

ligule retuse or rounded, to 3 mm, free limb to 0.2 mm;

blades 60 cm × 5 mm, shorter than flowering stem.

sheath fronts spotted red-brown or pale brown, apex short-convex, membranous or slightly thickened, rugose;

ligule retuse, to 0.5 mm, free limb to 0.1 mm;

blades 70 cm × 5 mm, tip not reaching inflorescence.

spicate, 3–7 cm × 15–25 mm, with 10–15 branches, proximal branches not distinctly separate; the proximal internode to 10 mm;

bracts setaceous, usually only the proximal conspicuous.

spicate, 2.5–6 × 1.5 cm, with 10–15 branches, proximal scarcely separate; the proximal internode to 10 mm;

proximal bracts setaceous, not conspicuous, distal bracts scalelike.

pale brown, body broadly ovate, 3.2–4 × 2–2.6 mm, base rounded or cordate, apex abruptly contracted to beak;

beak 1.3–1.5 mm, 1/3 length of perigynium.

yellow-brown, red dotted, 3–5-veined abaxially, body broadly ovate, 2.5–5 × 2.5–3 mm, base rounded;

beak 0.8–1.2 mm.

brown, ovate, 1.5–1.9 × 1.2–1.6 mm, dull.

red-brown, elliptic, 1.4–1.6 × 1.2 mm, dull.

hyaline, pale brown, becoming colorless with green midrib, awn usually not longer than the body.

hyaline, brown, awn to 2 mm, usually shorter than scale body.