Flora of North America species comparison

dark maroon at base; flowering stems 0.5–1.1 mm thick, 20–90 cm, much longer than leaves at maturity, glabrous, but often scabrous within inflorescence.

to 80 cm.

sheaths glabrous or short-pubescent, basal few bladeless and maroon, others grading from maroon to green on back, pale brown-hyaline, red dotted and sometimes pubescent near apex;

blades flat, 3–9 mm wide, glabrous, minutely scabrous on margins distally.

blades 1.5–3(–4) mm wide.

peduncles of lateral spikes slender, to 40 mm, equaling spikes or usually somewhat shorter, scabrous;

peduncle of terminal spike to 13 mm, glabrous or scabrous;

proximal bracts shorter than inflorescences;

sheaths 20–25 mm;

blades 3–4 mm wide.

usually less than 15 cm, proximal internodes usually less than 100 mm;

peduncles of lateral spikes usually included or exserted less than 1 cm;

proximal bracts with blade 8–75 mm, sheath cylindric, 6–25 mm, mouth not purple-banded, U-shaped, 0.7–1.3(–1.5) mm wide.

4–6;

lateral spikes pistillate androgynous, erect or, sometimes, proximal spikes pendent on long-exserted peduncles, 10–15(–20) × (3–)4.5–7(–8) mm;

terminal spike usually staminate, ± erect, 10–16 × (2.5–)3–5 mm.

green, usually red dotted, 2-ribbed and finely 8–12-veined, veins more obvious near base, ellipsoid to oblong-ovoid, loosely enveloping achenes, 2–3.7 × 1.3–1.6 mm, membranous, acute at base, tapering gradually to acute beakless apex, glabrous.

spreading, usually green or with a few purple blotches, occasionally all purple, 10–16-veined, obovate to ovate, 2.7–3.5(–4) × 1–1.7 mm, margins usually ciliate distally, glabrous;

beak distinct, 0.7–1.2 mm, tip usually brown or purple, usually ciliate, distance from beak tip to achene apex less than 1.4 mm.

substipitate, 1.2–2.6 × 1–1.2 mm.

spikes 2–5, 1 per node, well separated, drooping at maturity, pistillate with 10–45 perigynia attached 2 mm apart, linear, 10–70 × 2–3.5 mm.

spike gynecandrous, 10–60 × 1–3 mm.

scales white-hyaline tinged with chestnut, broad green midrib often red dotted, sometimes scabrous, ovate to oblong, shorter than mature perigynia, apex rounded or cuspidate with ciliate awn less than 1 mm, otherwise glabrous.

scales usually at least partly gold or red-brown with broad scarious margins and tip, sometimes all white, obovate to ovate, 1.8–3 × 1.1–1.8 mm, apex usually obtuse, sometimes short-awned.

scales gold or reddish brown with pale midvein and scarious margins, sometimes all white, obovate to elliptic, rarely ovate, (2.6–)3–3.7(–4.0) × 0.9–2 mm, apex obtuse.

1.4–2.5(–2.7) mm.

= 50, 52, 54.