Flora of North America species comparison

to 100 cm × 2 mm, scabrous.

to 25–60(–100) cm, distally smooth or finely 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.

2–5 mm wide.

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.

proximal bracts shorter than or exceeding inflorescences;

spikes oblong or elongate, cylindric or clavate, 7–27 × 5–7 mm;

lateral 2–4(–6) spikes pistillate, proximal ones usually erect, occasionally spreading or pendent, separate, pedunculate, distal ones overlapping, erect, contiguous, short-pedunculate;

terminal spike gynecandrous, 1/3–2/3 staminate flowers, rarely staminate, sometimes appearing staminate due to fallen terminal perigynia.

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.

ascending, pale green or pale yellow, veinless or obscurely veined, ovate, orbicular or obovate, 2.5–3.5 × 1.75–2.5 mm, apex abruptly beaked, smooth;

beak 0.3–0.5 mm, shallowly or deeply bidentate, smooth.

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

filling proximal 1/2 or less of perigynia.

pale brown, hyaline, awn to 3 mm.

scales dark brown to black, margins hyaline, lanceolate, typically shorter and narrower (equaling or slightly longer) than perigynia, midvein lighter colored than body, conspicuous, frequently raised, prominent, apex acute to short-mucronate.

= 52.