Flora of North America species comparison

10–90(–135) cm.

dark maroon at base; flowering stems 25–50 cm, as long or slightly longer than leaves at maturity, 0.4–0.6 mm thick, glabrous, sometimes scabrous on angles within inflorescence.

3–6 per culm;

sheaths tight, inner band hyaline, 1.8–2.5 cm, apex concave, glabrous;

ligules 0.6–2.5(–4.5) mm, rounded to ± acute;

blades plicate, 5–40 cm × 0.7–3.3(–3.8) mm, widest leaf 1–3.3(–3.8) mm wide.

basal sheaths maroon, bladeless, pubescent, often only sparsely so;

others grading from maroon to green on back, brown-hyaline on front, red dotted and pubescent toward apex;

blades flat, 1–2 mm wide, sparsely pilose on adaxial surface, margins ciliate.

0.7–7.8 cm;

spikes (2–)3–8;

lateral spikes pistillate often with few staminate flowers proximally, 3–15.5 mm, sessile, staminate portion 7-flowered, to 8.2 mm, pistillate portion 3–32-flowered, 2.5–11 mm;

basal 2 spikes 1.7–42 mm apart;

terminal spike gynecandrous, 5–24 mm, staminate portion 2–17-flowered, 2–16.5 × 0.9–2 mm, pistillate portion 4–26-flowered, 2.6–9 × 4.9–9.1 mm.

peduncles of lateral spike 0–35 mm;

peduncle of terminal spike 5–35 mm, minutely scabrous;

proximal bracts equaling or often exceeding inflorescences;

sheathless and auriculate or with sheaths less than 3 mm;

blades to 1 mm wide.

spreading to reflexed, castaneous to dark brown, 2–14-veined abaxially, 0–12-veined adaxially over achene, lanceolate to ovate, (2.65–)2.9–4.75 × 0.8–2.1 mm, (1.7–)1.8–3.2(–3.6) times as long as wide;

beak (0.85–)0.95–2 mm, (0.4–)0.45–0.86 length of body, serrulate, teeth (0–)0.15–0.5 mm.

green, usually red dotted, 2-ribbed and conspicuously 6–10-veined, narrowly lance-ellipsoid, loosely enveloping achene, 4–4.8 × 1.2–1.5 mm, membranous, base with stipe 1 mm, apex gradually tapering to beak, pubescent toward apex;

beak truncate or minutely toothed, 1 mm.

ovate-lanceolate to rhombic-ovate, 1.3–2.1 × 0.8–1.55 mm.

substipitate, 2–2.5 × 0.8–1 mm.

scales ovate, (1.4–)2.1–3.1 × 0.7–2.3 mm, apex acute to sometimes obtuse.

scales reddish brown with narrow hyaline margins and green midrib, ovate, shorter than mature perigynia, apex rounded to acute or cuspidate, glabrous.

scales ovate-lanceolate to ovate, 1.3–3.8 × 0.8–1.7 mm, base clavate, apex acute.

0.8–1.6(–2) mm.

spikes 1–3, 1 per node, each overlapping 1 above but not crowded, proximal 1 often well separated, erect to ascending, sessile or pedunculate, pistillate with 10–25 perigynia attached less than 1 mm apart, narrowly elongate, 10–35 × 2–3 mm.

spike staminate, 10–24 × 1.5–2.5 mm.

= 58.