Flora of North America species comparison

0.8–1.9 mm thick, shoots often arising 2–several per cluster, many nodes without shoots.

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

bluntly trigonous, (8–)15–40 cm, smooth-angled 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 pale to dark brown;

sheaths with hyaline inner band, apex not prolonged, glabrous;

ligules 0–2.8 mm;

blades 1–3(–3.5) mm wide.

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.

dense, headlike, 1.2–3.5(–4.5) cm, 1/2+ as wide as long (if pistillate);

spikes 6–20(–25), usually unisexual; staminate spikes lanceoloid; pistillate spikes ovoid.

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.

brown, essentially veinless, usually stipitate, ovate to broadly elliptic, ± plano-convex, (3–)3.5–4.2(–4.8) × 1.2–2.1 mm, dull;

beak (0.9–)1.2–1.9 mm, apex hyaline, friable, oblique or obscurely bidentulate.

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

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 pale brown to ± whitish hyaline, hyaline margins, lanceolate to ovate, (4.3–)4.7–7.5 mm, apex acute to acuminate, satiny to ± dull.

1.5–2.5 mm.

(2.5–)2.8–3.9 mm, apiculus bristly (30X).