Flora of North America species comparison

(20–)30–100 cm, 1.5–3.5 mm wide basally, 0.7–1.2 mm wide distally.

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

sheaths usually loose, proximal green-and-white-striped and green-and-white-mottled, with conspicous transverse veins on back, fronts white to hyaline, sometimes red dotted and transversely rugose, yellow or brown and thickened at mouth;

ligules 1–4.5 mm, shorter than to as long as wide;

widest leaf blades 3.5–5 mm wide.

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.

with 5–10 spikes, (1.5–)2–5 cm × 8–13 mm;

proximal internodes shorter than to as long as proximal spikes;

proximal bracts to 3 cm;

spikes with 5–15 ascending to spreading perigynia.

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.

pale green to pale brown, veinless or weakly 2–5-veined abaxially, 3.4–4.6 × 1.9–2.8 mm, body somewhat spongy, thickened at base, margins serrulate distally;

beak 0.7–1.4 mm, apical teeth 0.3–1 mm.

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.

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

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

scales hyaline or pale brown with green, 1–3-veined center, ovate, 2.2–3.5 × 1.2–1.8 mm, body 2/3 as long to almost length of perigynia, apex acuminate to short-awned.

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

1.5–2.5 mm.

3.