Flora of North America species comparison

10–90(–135) cm.

30–75 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.

sheaths adaxially often tinged brown, summits U-shaped;

distal ligules 0.5–2(–3) mm;

blades 4–6 per fertile culm, 17–45 cm × 2.5–4.5 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.

open or dense, greenish brown to gold, 2.5–4 cm × 9–20 mm;

proximal internode 4–16 mm; 2d internode 2–7.5 mm;

proximal bracts leaflike, longer than inflorescences.

3–8, distant, distinct, fusiform to broadly ovoid or obovoid, 11–21 × 6–9 mm, base acute to attenuate, apex truncate to tapered.

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.

appressed to ascending, green or gold, usually inconspicuously veined on each face, narrowly ovate to ovate, flat except over achene or ± plano-convex, 5.4–7.2(–7.5) × 2–2.8(–3) mm, 0.5–0.6(–0.7) mm thick, 2.4–2.7 times as long as wide, margin flat, including wing 0.45–0.8 mm wide, ciliate-serrulate at least distally;

beak red-gold to red-brown, sometimes white-hyaline at tip, flat, ± ciliate-serrulate, abaxial suture usually inconspicuous, distance from beak tip to achene 2.2–3.6 mm.

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

oblong to broadly ovate, 1.9–2.7 × 1.4–2 mm, 0.4–0.5 mm thick.

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

scales red-brown, red-gold, or gold, with pale brown or whitish midstripe, lanceolate to broadly ovate, 4.3–6.2 mm, shorter and narrower than perigynia, margin white, (0.1–)0.2–0.3(–0.5) mm wide, apex acute to acuminate.

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.