Flora of North America species comparison

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

20–90 cm, 1.5–3 mm wide basally, 0.9–1.1 mm wide distally.

bluntly trigonous, (8–)15–40 cm, smooth-angled distally.

sheaths tight, green, fronts hyaline, yellowish and thickened at mouth;

ligules to 3 mm, as long as wide;

widest leaf blades 2.5–4.5 mm wide, sometimes papillose adaxially.

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 (3–)5–10 spikes, 1.5–3.5 cm × 8–15 mm;

proximal internodes equaling or shorter than proximal spikes;

proximal bracts 1–5 cm;

spikes with 8–20 ascending or 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, pale yellow, or pale brown, 9–15-veined abaxially, 3.5–5 × 2.2–3 mm, margins serrulate distally;

beak 0.8–1.2 mm, apical teeth 0.4–0.6 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.

suborbiculate, 1.9–2.5 × 1.5–2 mm.

scales hyaline or brown with green, 3-veined center, ovate, (2.4–)3–4.3 × (1–)1.6–3 mm, body slightly shorter to longer than perigynium and as wide, apex awned to 1.5–3.5(–4) mm.

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.

2.2–2.5 mm.

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