Flora of North America species comparison

1 mm thick.

to 100 cm × 2 mm, scabrous.

7–15 cm, 2–2.5 mm thick at base.

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.

sheaths to 1.5 cm, fronts uniformly colorless or pale brown;

blades with conspicuous median groove, flattened dorsiventrally, elliptic in cross section, 6–15(–18) cm × 0.3–0.6 mm, lacking conspicuous air cavities.

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.

0.7–1.5 cm × 6–8 mm, staminate portion less than 2 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.

veinless, sessile, elliptic, 3.5–5 × 1.5–2.5 mm, base rounded, apex acute;

beak erose;

rachilla longer than fruit.

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

stalked to 0.2 mm.

pale brown, hyaline, awn to 3 mm.

scales yellow-brown medially, 1-veined, equaling perigynia in length and width, apex acute, involute, appearing acuminate, awns absent.

1.5–2 mm.

1.5–2.5 mm.

= 52.