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, 8–90 cm, scabrous 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 reddish brown;

ligules as wide as to slightly longer than wide;

blades mid to dark green, V-shaped, sometimes with revolute margins, 0.9–6.3 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.

2.5–14(–20) cm;

proximal bract 0.6–16(–29) cm, shorter than or equaling inflorescence;

proximal 1–3 spikes pistillate, erect or the proximal often pendent;

terminal 1–3 spikes staminate.

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.

ascending, often dark-colored, obscurely few-veined, veins not running to beak, tightly investing achene, elliptic, 2.2–5.5 × 1.1–2.9 mm, apex abruptly contracted;

beak 0.2–0.8 mm, bidentulate, teeth straight, to 0.3 mm.

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

yellow, biconvex, 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 ovate, 1.9–4.3(–5) × 0.9–2.1 mm, as long as or shorter than perigynia, margins entire, apex obtuse or acute, awnless.

1.5–2.5 mm.

2.

= 78, 80.