Flora of North America species comparison

10–90(–135) cm.

15–60 cm, distally finely scabrous.

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.

3–4 mm wide.

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.

proximal bracts shorter than or exceeding inflorescences;

spikes overlapping, distinct, contiguous, short-oblong or cylindric, 5–15 × 3–4.5 mm;

lateral 2–3 spikes pistillate;

proximal spikes separate, erect, short-pendunculate;

distal lateral contiguous or separate, not forming dense terminal cluster, of similar length;

terminal spike gynecandrous.

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.

ascending, green becoming dark brown or purple-black, veinless, elliptic, 2–2.5 × 1.25–1.5 mm, frequently serrulate, apex abruptly or gradually beaked, smooth or distal margins sparsely papillose;

beak 0.2–0.3 mm, shallowly bidentate, serrulate or smooth.

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

nearly filling body of perigynia.

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

scales dark brown to black, margins hyaline, ovate, shorter than and as broad as perigynia, midvein same color as body, inconspicuous.

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

0.8–1.6(–2) mm.

= 58.