Flora of North America species comparison

15–38 cm.

aphyllopodic, without dead leaf remains at base, 20–90 cm.

sheath summits white-hyaline, green ribbed, U-shaped, occasionally prolonged to 4 mm distal to collar;

distal ligules 1–3(–3.5) mm;

blades 2–4 per fertile culm, 4.5–18 cm × 1.5–2.5 mm.

blades 2–5 mm wide, margins revolute, scabrid at tip.

nodding, dense, dark or medium brown, 1–1.2 cm × 5.5–10 mm;

proximal internode 1.3–3 mm; 2d internode 0.6–1.5 mm;

proximal bracts scalelike to bristlelike.

proximal bracts 2–7 cm, shorter than inflorescences;

lateral spikes usually androgynous, (10–)25–50 × 3.5–6 mm, with 20–80 perigynia;

terminal spikes 20–50 × 2.5–5 mm.

3–6, usually individually indistinct, ovoid to broadly ovoid, 4.5–6.5 × 2.5–5.5 mm, base and apex acute to rounded;

terminal spike without conspicuous staminate base.

ascending-spreading to spreading, gold to dark brown, conspicuously 0–7-veined abaxially, conspicuously 0–4-veined adaxially, ovate, plano-convex, 2.6–3.2 × 0.9–1.3 mm, 0.5–0.65 mm thick, margin unwinged, pithlike tissue usually present in proximal perigynia walls;

beak medium or dark brown at tip, often with white-hyaline, cylindric to somewhat flat, abaxial suture with conspicuous white margin, distance from beak tip to achene 1.2–1.6 mm, entire.

2.5–3.5 × 1.2–2 mm, apex rounded;

beak 0.1–0.5 mm.

ovate to obovate, 1.2–1.5 × 0.8–1 mm, 0.4–0.5 mm thick.

scales dark brown, usually with pale or green midstripe, ovate, 1.5–2.5(–3.5) mm, usually shorter, narrower than perigynia, margin occasionally hyaline gold, to 0.4 mm wide, apex obtuse or acute.

scales ovate, 2.4–4 × 1.3–1.8 mm, shorter and as wide as or slightly narrower than perigynia, apex obtuse to acute.

scales oblong-obovate, 3.7–4.5 × 1.2–2 mm, apex obtuse.

2.6–2.9 mm.

= 64