Flora of North America species comparison

10–90(–135) cm.

30–70(–110) 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 white-hyaline, often brownish tinged, summits U- or V-shaped, prolonged to 0–0.5(–1) mm beyond collar;

distal ligules 1.5–3 mm;

blades (2–)3–4 per fertile culm, 11–40(–50) cm × 1.4–3.5(–4) 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, brown or gold, 1.5–3 cm × 8–12 mm;

proximal internode 2.5–7 mm; 2d internode 1.5–4.5 mm;

proximal bracts bristlelike or leaflike.

4–8(–9), distant to loosely aggregated, at least proximal 1–3 distinct, narrowly to broadly ovoid, (8–)10–11 × 4–6.5 mm, base acute to attenuate, apex acute to truncate.

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-ascending to ascending, green or straw colored to light brown, often green distally, conspicuously 5–9-veined abaxially, conspicuously 0(–3)-veined adaxially, narrowly to sometimes broadly ovate, plano-convex or biconvex, 3.5–4.5(–5.4) × 1.5–1.9 mm, 0.6–0.7 mm thick, ± leathery, margin flat, including wing 0.15–0.3 mm wide, ciliate-serrulate at least on distal body, sometimes filled with pithlike tissue towards perigynium base, often with metallic sheen;

beak brown or gold at tip, cylindric, unwinged, abaxial suture usually inconspicuous, distance from beak tip to achene 1.5–2.2(–2.8) mm, ± entire for 0.5–1 mm.

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

elliptic to broadly ovate, (1.5–)1.7–2.1(–2.3) × 1.05–1.45 mm, 0.5–0.65 mm thick.

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

scales gold or red-gold to chestnut-brown, often with green, gold, or whitish midstripe, ovate to broadly ovate, 3.1–3.6(–4.2) mm, less than or equal to perigynia length, width, margin white, 0–0.2(–0.3) mm wide, apex obtuse 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.