Flora of North America species comparison

to 100 cm × 2 mm, scabrous.

25–80 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 hyaline, often green-veined nearly to collar, summits U- or V-shaped or rounded, sometimes prolonged to 1.5 mm beyond collar;

distal ligules 1–4 mm;

blades 2–5 per fertile culm, 7–25 cm × 2–3.5 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.

stiffly erect, dense or open, greenish brown to gold, 2–4.5 cm × 12–20 mm;

proximal internode 2–15 mm; 2d internode 2.5–5 mm;

proximal bracts leaflike, much longer than inflorescence, or bristlelike.

5–8(–11), usually distinct, broadly ovoid, 8–11 × 5–8 mm, base and apex acute to rounded.

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.

ascending to spreading, green, gold, or cream colored, conspicuously 7–11-veined abaxially, conspicuously 0(–2)-veined adaxially, ovate to broadly ovate, plano-convex to biconvex, 4–5 × 1.9–2.5 mm, 0.7–1.1 mm thick, margin flat, including wing 0.2–0.6 mm wide, often thickened;

beak gold at tip, flat, ciliate-serrulate, abaxial suture usually inconspicuous, distance from beak tip to achene 1.7–2 mm.

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

obovate to elliptic, 2.1–2.5 × 1.6–2 mm, 0.7–1 mm thick.

pale brown, hyaline, awn to 3 mm.

scales reddish brown, with paler center, ovate to broadly ovate, 4–5.5 mm, equaling, ± covering perigynia, hyaline margin absent or to 0.2 mm, apex acute to mucronate.

= 52.

= 78.