Flora of North America species comparison

to 100 cm × 2 mm, scabrous.

25–35 cm, smooth.

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.

2–3 mm wide, often circinate.

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 globose or elongate, 6–17 × 6–10 mm;

proximal spikes sometimes erect, separate, short-pedunculate;

distal spikes contiguous, overlapping, or erect, sessile or short-pendunculate, forming dense terminal cluster;

lateral 1–2(–4) spikes pistillate;

terminal spike gynecandrous.

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, light brown, strongly veined, broadly elliptic, 4–5 × 2–3 mm, apex abruptly beaked, smooth or distally papillose;

beak 0.6–0.8 mm, deeply, sharply bidentate, smooth or papillose.

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

nearly filling body of perigynia.

pale brown, hyaline, awn to 3 mm.

scales light to dark brown or chestnut, distal margins broadly hyaline, lanceolate, equaling or, more commonly, exceeding and narrower than perigynia, midvein lighter colored than body, conspicuous, often raised, prominent, apex acute or mucronate.

= 52.