Flora of North America species comparison

to 80 cm × 3–8 mm, scabrous.

(5–)20–80 cm.

sheath fronts not spotted, slightly thickened near hyaline margins, apex convex, membranous, rugose;

ligule retuse or rounded, to 3 mm, free limb to 0.2 mm;

blades 60 cm × 5 mm, shorter than flowering stem.

sheath summits usually U-shaped, sometimes prolonged to 2.5(–4) mm beyond collar;

distal ligules 1–3(–5) mm;

blades 3–4(–5) per fertile culm, 10–20 cm × (1.5–)2–3(–5) mm.

spicate, 3–7 cm × 15–25 mm, with 10–15 branches, proximal branches not distinctly separate; the proximal internode to 10 mm;

bracts setaceous, usually only the proximal conspicuous.

erect, dense, headlike, green to brown, (0.8–)1.5–2.2 cm × 7–20 mm;

proximal internode 1.5–5 mm; 2d internode 1–3.5 mm;

proximal 2–3 bracts leaflike, ascending to spreading, much longer than inflorescences, usually less than 1.8 mm wide, bases ± surrounding culms.

(5–)7–10(–14), individually distinct or indistinct, broadly ovoid to ovoid, (4.5–)7–10 × 4.5–7(–9) mm, base and apex truncate to acute.

pale brown, body broadly ovate, 3.2–4 × 2–2.6 mm, base rounded or cordate, apex abruptly contracted to beak;

beak 1.3–1.5 mm, 1/3 length of perigynium.

ascending to ascending-spreading, cream colored to light brown, conspicuously 0–9-veined abaxially, conspicuously 0–8-veined adaxially, ovate to lanceolate, plano-convex or flat, (2.8–)3.5–4(–4.8) × (0.8–)1–1.5(–1.8) mm, 0.35–0.45 mm thick, margin flat, including wing (0.1–)0.2(–0.5) mm wide, wing ciliate-serrulate on distal body;

beak gold to red-brown at tip, cylindric, unwinged, abaxial suture usually with conspicuous white margin, distance from beak tip to achene 1.9–2.5 mm, entire for at least 0.4–0.9 mm.

brown, ovate, 1.5–1.9 × 1.2–1.6 mm, dull.

sessile or shortly stipitate, ovate to obovate, (1–)1.2–1.6 × 0.7–1 mm, 0.3–0.4 mm thick.

hyaline, pale brown, becoming colorless with green midrib, awn usually not longer than the body.

scales gold to brown, with whitish, green, or tan midstripe, lanceolate to ovate, 2.4–4.3 mm, shorter, narrower than perigynia, margin sometimes white, 0.25 mm wide, apex acuminate to awned.

= 68.