Flora of North America species comparison

(20–)30–100 cm, 2.5–8 mm wide basally, 0.7–1.6 mm wide distally.

9–30(–40) cm.

sheaths usually loose, proximally green-and-white-striped, not white spotted, with conspicuous transverse veins on back, fronts hyaline, sometimes transversely rugose and red dotted, thin, white or hyaline and fragile at mouth;

ligules 2–7 mm, shorter to longer than wide;

widest leaf blades (3–)4–8 mm wide.

sheaths adaxially white-hyaline, sometimes cross-corrugate adaxially, summits usually U-shaped, sometimes prolonged to 3 mm beyond collar;

distal ligules 0.3–2 mm;

blades 3–4(–5) per fertile culm, 3–16 cm × 1.5–4 mm.

with 5–15 spikes, 1–5 cm × 8–15 mm, occasionally compound, then somewhat larger;

proximal bracts to 3 cm;

spikes with 5–15 ascending to spreading perigynia;

proximal internodes shorter than to 1.5 times as long as proximal spikes.

dense, dark brown, green and brown, or gold, 1.1–2.1 cm × 13–18 mm;

proximal internode 1–2.5(–3.4) mm; 2d internode 0.5–2 mm;

proximal bracts scalelike, shorter than inflorescences.

5–7(–9), aggregated, individually indistinct broadly ovoid, 6.5–10 × 4.5–8 mm, base and apex usually rounded.

pale green to pale brown, veinless or 3–7(–12)-veined abaxially, rarely veined adaxially, 3.5–5.5 × 2–3 mm, body somewhat spongy, base thickened, margins serrulate distally;

beak 0.6–1.6 mm, apical teeth 0.3–1 mm.

ascending to ascending-spreading, light brown to coppery or dark brown, conspicuously 0–3(–8)-veined adaxially, lance-ovate to broadly ovate, flat except over achene, 4–6.5 × 1.5–2.6 mm, 0.3–0.5 mm thick, margin flat, including wing 0.3–0.6(–0.8) mm wide, ciliate-serrulate at least on distal body;

beak dark brown to black, white-hyaline at tip, cylindric, unwinged, at least 1 mm, ± entire for 0.3–0.6 mm, abaxial suture inconspicuous or with conspicuous white margin, distance from beak tip to achene (2.3–)2.6–3.8 mm.

circular to elliptic- circular, 1.8–2.1 × 1.6–2 mm.

elliptic or ovate, (1.2–)1.4–1.8 × 0.8–1.1(–1.3) mm, 0.3–0.45 mm thick.

scales hyaline or brown with green, 1–3-veined center, ovate, 2.6–4.4 × 1.3–2.4 mm, body shorter to slightly longer than perigynium, apex acuminate to short-awned.

scales reddish or coppery to dark brown, sometimes with whitish or pale gold midstripe, narrowly ovate to ovate, 3–4.8 mm, shorter and narrower than perigynia, apex acute to obtuse.

1.5–3 mm.

= 82.