Flora of North America species comparison

21–47 cm, smooth to weakly scabrous distally;

bases not fibrous.

easily compressed, to 120 cm × 7 mm, scabrous.

blades pale green, shorter than culms, 1–3.3 mm wide, herbaceous, papillose abaxially, scabrous adaxially.

sheaths usually all with blades, green;

fronts rugose, indistinctly linearly veined, apex colorless, fragile, convex, not forming extension, erose;

ligules acute, 10 mm, free limb to 0.8 mm;

blades not epistomic, to 100 cm × 15 mm.

with both staminate and pistillate spikes;

peduncles of staminate spikes 0.4–2.2 mm;

proximal cauline bracts leaflike usually shorter than inflorescences.

densely spicate, elongate, cylindric, with 15–25 distinguishable branches, 5–15 × 4 cm;

proximal internode to 10 mm.

proximal pistillate spikes 2–3 (basal spikes 0);

cauline spikes with proximal 2 spikes overlapping, se!parated by less than 7 mm, with 3–10 perigynia; staminate spikes 5.3–8.6 × 0.8–1.7 mm.

light green, veinless, ellipsoid, 3.2–4.2 × 1.1–1.3 mm, longer than wide;

beak straight, pale green, 0.7–1 mm, ciliate-serrulate, apical teeth 0.2–0.4 mm.

pale brown with red-brown veins, 15-veined abaxially, 7-veined adaxially, to 6 × 2 mm, base distended proximally, cordate;

stipe to 0.4 mm;

beak to 3.5 mm, serrulate.

brown, obovoid to ellipsoid, obtusely trigonous in cross section, 1.9–2.4 × 1–1.3 mm.

ovate, to 2 × 1.5 mm;

stalk to 0.3 mm;

persistent style base cylindric.

pistillate scales reddish brown to pale brown, with broad white margins, ovate, 2.2–3.2 × 1.2–1.8 mm, 1/2 to 2/3 length of perigynia, apex acute to acuminate,; staminate scales elliptic, 2.4–3.2 × 0.9–1.8 mm, apex acute.

hyaline.

1.4–1.5 mm.

3.

= 36.