Flora of North America species comparison

10–90(–135) cm.

solitary or not, erect, 20–100(–130) cm.

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.

4–8;

basal sheaths reddish to brownish;

sheath of distal leaf (1.3–)1.7–10(–25) cm;

ligules triangular, 3.5–18 mm;

blades 15–64 cm × 4–15 mm.

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.

4–40 cm;

peduncles of proximal spikes 0.5–20 cm, basal 2 peduncles 1–20 cm apart of terminal spike 0.5–6(–7) cm, shorter than or exceeding distal pistillate spike by 2 cm or less;

bracts leafy, sheaths 0.5–15 cm, blades 13–55 cm × 3–11 mm.

proximal pistillate spikes (1–)2–5, distal spikes usually ± crowded, ascending, densely (4–)8–80-flowered, ovoid to cylindric, 1.5–6.5 × 1.3–3 cm;

terminal staminate spikes 1(–2), 1.5–8.5 cm × 1–5 mm.

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, strongly 13–22-veined, ± stipitate, lance-ovoid, 11–19 × 3–6 mm, shiny, glabrous;

beak conic, 6–10 mm.

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

stipitate, rhomboid, flat to concave faces, angles smoothly thickened, not pointed or nobbed, 3–4(–4.5) × 1.7–2.6(–2.8) mm;

style same texture as achene.

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

scales 1–7-veined, lanceolate to lanceolate-ovate, 6–15 × 1–2.7 mm, apex acute to awned, awns rough, to 6 mm.

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

0.8–1.6(–2) mm.

3, 3–5.5 mm.

= 58.