Flora of North America species comparison

(10–)20–85 cm.

to 100 cm × 2 mm, scabrous.

2–8.5 mm wide, sparingly scabrous.

sheath fronts spotted red-brown or pale brown, apex short-convex, membranous or slightly thickened, rugose;

ligule retuse, to 0.5 mm, free limb to 0.1 mm;

blades 70 cm × 5 mm, tip not reaching inflorescence.

spicate, 2.5–6 × 1.5 cm, with 10–15 branches, proximal scarcely separate; the proximal internode to 10 mm;

proximal bracts setaceous, not conspicuous, distal bracts scalelike.

4–6, erect;

lateral spikes pistillate with a few staminate flowers proximally and rarely also distally, narrowly elliptic, 11–4.5 × 5.5–11 mm;

terminal spike staminate, sometimes gynecandrous or abortive, 9–42 × 1.5–3.5 mm.

horizontal, 3.2–5.1(–5.6) × 1.3–2.5 mm, minutely pustulate;

beak 1.2–2.1 mm, smooth.

yellow-brown, red dotted, 3–5-veined abaxially, body broadly ovate, 2.5–5 × 2.5–3 mm, base rounded;

beak 0.8–1.2 mm.

trigonous-obovoid, sides strongly concave, 1.2–1.8(–2.1) × 0.9–1.3(–1.5) mm, less than 2 times as long as wide;

style deciduous, straight or sinuous.

red-brown, elliptic, 1.4–1.6 × 1.2 mm, dull.

scales with distinct body, 2.9–7(–11.8) × 0.4–0.9(–1.1) mm, body 1.5–2.5 mm, translucent, apex with long, scabrous awn to 1.4–4.5(–9) mm, exceeding perigynia.

scales ± tightly imbricate, lanceolate, narrowly ovate, or oblong-obovate, 3.3–9.3(–12.5) × 0.9–1.6 mm, apex acute to truncate-erose or retuse, sometimes with scabrous awn to 0.1–6.2(–9.2) mm.

hyaline, brown, awn to 2 mm, usually shorter than scale body.