Flora of North America species comparison

20–60 cm, 2–3.5 mm wide basally, 0.5–1 mm wide distally.

densely tufted, ascending, lax or, occasionally, decumbent, 13–78 cm × 0.8–1 mm.

sheaths tight, green, rarely white spotted, fronts hyaline, slightly thickened at mouth;

ligules to 5 mm, longer than wide;

widest leaf blades (1.9–)2.5–5 mm wide.

basal sheaths purple or purple tinged;

sheaths 2–42 mm;

blades ascending or lax, erect, green or yellow-green, midrib developed adaxially, 2 lateral veins abaxially, 19–38 cm × 1–5 mm, blades of overwintering leaves smooth.

0.5–11.2 cm × 0.5–4 mm, angles of bract sheath denticulate;

bract blade of distal lateral spikes linear, narrower than spikes, not concealing them;

widest bract blade of distalmost lateral spike 0.5–3.4 mm wide.

forming dense heads, with 3–8 spikes, 0.6–2 cm × 5–10 mm;

proximal bracts 1–5 cm;

spikes with 4–20 ascending to spreading perigynia.

peduncles proximal pistillate spikes to 11 cm, distal spike sessile; staminate spike 0.5–10.6 cm.

(3–)4(–5) per culm;

lateral spikes 5–27 × 3–4 mm;

internode between proximal scales in proximal spike 1.1–3.2(–4.8) mm;

terminal spike linear, 11–21 × 1–2.2 mm.

pale green to pale yellow, veinless or to weakly 8-veined abaxially, 2.5–3.2 × 1.4–2 mm, body elliptic to circular, widest at 0.4–0.55 length of body, margins serrulate distally;

beak 0.7–1.1 mm, apical teeth 0.3–0.5 mm.

4–12 per spike, closely overlapping, aggregated, ascending, conspicuously (22–)25–32-veined, elliptic-obovate, 2.8–3 × 1.5–1.8 mm, 1.8–2.7 times long as wide;

beak abruptly bent, 0.2–0.8 mm.

circular, 1 × 1 mm.

obovoid, 2.6–2.8 × 1.3–1.6 mm.

scales hyaline with green midvein, ovate, 1–1.8 × 0.8–1.4 mm, body not more than 1/2 length of perigynium, apex acuminate to short-awned.

scales 2.8–3 × 1–1.2 mm, apex acute to aristate, awn to 1 mm.

0.7–1.3 mm.

2.6–3 mm.

scales 3.5–4 × 1.2–1.5 mm, margins hyaline, purple-brown or brownish purple tinged, apex acute.

= 48.

= 33, 38, 40.