Flora of North America species comparison

trigonous in cross section, 10–105 cm, smooth distally.

(20–)30–100 cm, 2.5–8 mm wide basally, 0.7–1.6 mm wide distally.

basal sheaths dark reddish brown;

ligules longer than wide;

blades mid to dark green, flat to W-shaped, widest leaves 3–10 mm wide, glabrous.

sheaths usually loose, proximally green-and-white-striped, not white spotted, with conspicuous transverse veins on back, fronts hyaline, sometimes transversely rugose and red dotted, thin, white or hyaline and fragile at mouth;

ligules 2–7 mm, shorter to longer than wide;

widest leaf blades (3–)4–8 mm wide.

3–20(–35) cm;

proximal bract 19–70(–100) cm, (2.5–)3–9 times longer than inflorescence;

proximal (2–)3–6 spikes pistillate, ascending to spreading, at least the distal erect, ca. 20–150-flowered, cylindric;

terminal 1(–3) spikes staminate, slightly if at all elevated beyond summit of crowded pistillate spikes.

with 5–15 spikes, 1–5 cm × 8–15 mm, occasionally compound, then somewhat larger;

proximal bracts to 3 cm;

spikes with 5–15 ascending to spreading perigynia;

proximal internodes shorter than to 1.5 times as long as proximal spikes.

mostly reflexed at maturity, often green or straw colored, strongly 6–13-veined, veins running into beak, ovate, 6–10 × (1.6–)2.1–3.4 mm, apex abruptly tapered;

beak 2.1–4.5 mm, bidentulate, smooth, teeth straight, 0.3–1.1 mm.

pale green to pale brown, veinless or 3–7(–12)-veined abaxially, rarely veined adaxially, 3.5–5.5 × 2–3 mm, body somewhat spongy, base thickened, margins serrulate distally;

beak 0.6–1.6 mm, apical teeth 0.3–1 mm.

pale brown, symmetric, not indented, trigonous, smooth.

circular to elliptic- circular, 1.8–2.1 × 1.6–2 mm.

scales narrowly ovate, 2.4–4.5 × 1.1–1.8 mm, shorter than perigynia, margins entire, apex acute to acuminate, awnless.

scales hyaline or brown with green, 1–3-veined center, ovate, 2.6–4.4 × 1.3–2.4 mm, body shorter to slightly longer than perigynium, apex acuminate to short-awned.

3.

1.5–3 mm.