Flora of North America species comparison

(10–)20–85 cm.

to 90 cm.

2–8.5 mm wide, sparingly scabrous.

with 3–7 spikes;

peduncles of proximal spikes exserted (0.5–)1 cm;

proximal bracts with blades 12–80 mm, sheaths cylindric, 12–58 mm, mouth not purple-banded, 0.6–2 mm wide.

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.

ascending to spreading, green to purple, indistinctly or distinctly 9-20-veined, (3–)3.5–5.5 × 0.9–1.6(–1.8) mm, usually without flat margins around achene, usually glabrous, margins often ciliate-setose distally;

beak 0.5–1.5 mm, tip dark purple, often ciliate-setose, distance from perigynium beak tip to achene apex less than 2.5 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.

± obovoid, 1.3–2 × 0.7–1.1 mm.

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 red-brown to dark purple with paler midvein, ovate to obovate, 1.9–3.5 × 1–1.7 mm, apex acute or obtuse.

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.

scales gold to purple brown with pale, 2.9–4.5 × 0.7–1.6 mm, midvein ciliate, margins scarious, apex obtuse.

spikes pistillate or androgynous, erect to pendent, purple or purple and brown, 12–32 × 5–10 mm;.

spike staminate, ± erect, 11–66 × 3–8 mm.

(1.9–)2–3 mm.