Flora of North America species comparison

dark maroon at base; flowering stems 25–80 cm, usually longer than leaves at maturity, 1–2 mm thick, glabous to pubescent.

usually curved, bluntly trigonous, 1–25(–44) cm smooth-angled distally.

basal sheaths maroon, bladeless, pubescent, sometimes glabrous, others grading from maroon to green on back, light brown-hyaline on front, dotted or streaked with dark red, pubescent distally;

blades flat, 3–7 mm wide, pilose, especially abaxially, sparsely so distally, margins ciliate.

basal sheaths brown to dark brown;

ligules 0.3–1.2 mm;

blades involute, usually ± equaling culms, 0.5–2 mm wide.

peduncles of lateral spikes slender, 5–20 mm, shorter than spikes, pubescent;

peduncle of terminal spikes 5–40 mm, minutely scabrous;

proximal bracts nearly equaling but usually not exceeding inflorescences;

sheaths 15–25 mm;

blades 1.5–3 mm wide.

0.5–1.6(–2) cm;

spikes ca. (1–)3–7, essentially indistinguishable in dense ovoid to hemispheric head.

green to dark olive-green, copiously red dotted, 2-ribbed with 6–10 almost equally prominent veins, loosely enveloping achenes, ellipsoid-ovoid, 3.5–5 × 1.7–2 mm, membranous, base acute or with short stipe, apex gradually tapered to beak, glabrous or less often pubescent;

beak minutely bidentate, 0.4–0.7 mm.

pale yellowish brown proximally, darker brown on beak and distally, essentially veinless to finely 3–12-veined abaxially, essentially veinless adaxially, ± inflated, ovate to broadly ovate, (3–)3.2–5.1 × (1.4–)1.6–2.3(–2.7) mm, papery or leathery, dull to satiny;

stipe 0.2–0.7 mm;

beak 0.5–1 mm, scabrous-margined or, occasionally, smooth.

distinctly stipitate, 1.7–2.5 × 1–1.5 mm, stipe to 0.7 mm.

spikes 2–4, 1 per node, distal 2 usually overlapping terminal spike, others well separated, nodding or drooping at maturity, pistillate with 20–45 perigynia attached 1.5 mm apart, narrowly cylindric, 15–45 × 3–4.5 mm.

spike gynecandrous, 15–45 × 2–4.5 mm.

scales hyaline with broad green, red dotted midrib, elliptic-ovate, shorter than mature perigynia, apex acute to aristate or awned, awn less than 1 mm, ciliate.

scales pale brown to dark brown, usually with broad whitish hyaline margins, broadly ovate to nearly orbicular, shorter than perigynia, apex obtuse to acute, body shiny, ± translucent.

1.1–2 mm.