Flora of North America species comparison

to 100 cm × 2 mm, scabrous.

to 400 cm × 4 mm, scabrous.

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 fronts spotted red-brown, plane, apex truncate or concave;

ligule rounded, to 1 mm, free limb to 0.2 mm;

blades 15 cm × 5 mm, shorter than flowering stem.

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.

loosely paniculate, 4–10 cm × 7–15 mm, the proximal branches distinctly separate;

bracts scalelike, dilated with wide hyaline edges and prominent midvein; the proximal bracts setaceous, prolonged to 10–15 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.

yellow-brown to dark brown, 5–11-veined abaxially, occasionally 3–5-veined adaxially, body ovate, 3–3.6 × 1.2–1.6 mm, base rounded or cordate, conspicuous corky tissue distending the perigynium;

beak chestnut brown, 0.6–1.5 mm, apex white-hyaline, deeply bidentate.

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

brown, ovate, 1.5 × 1 mm.

pale brown, hyaline, awn to 3 mm.

hyaline, pale brown with prominent white-hyaline margins, apex acute or obtuse.

= 52.