Flora of North America species comparison

to 100 cm × 2 mm, scabrous.

30–70(–110) cm.

sheath fronts spotted red-brown or pale brown, apex truncate or short-convex, membranous or hyaline, rugose;

ligule retuse or rounded, to 2 mm, free limb to 0.2 mm;

blades 120 cm × 5 mm, longer than flowering stem.

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.

spicate, (3–)7–10 cm × 15 mm, with 10–15 branches, the proximal branches distinctly separate; the proximal internode to 25 mm;

bracts setaceous, those subtending at least the proximal lateral branches conspicuous.

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.

green to pale brown, veinless on both faces or 3-veined abaxially, body ovate or elliptic, 2–3.2 × 1.3–1.8 mm, base obtuse;

beak 0.8–1.2 mm, 1/3–1/2 length of perigynium.

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.

red-brown, ovate, 1.2–1.4 × 1 mm, glossy.

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

pale brown, hyaline, awn to 3 mm.

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.

= 52.