Flora of North America species comparison

5–60 cm.

15–38 cm.

basal and cauline;

proximal leaves reduced to sheaths;

distal leaves with blades 3–6 mm wide.

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.

spikes separate, elongate, 6–20 × 5–8 mm;

lateral spikes 1–3, pendent, long-pedunculate.

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.

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.

brown or purple-brown, veinless, ovate, 3–3.5 × 1.75–2 mm, papillose;

beak 0.3–0.4 mm, shallowly bidentate or truncate, sparsely papillose or smooth.

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.

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

scales dark brown or black, margins occasionally narrowly hyaline, midvein seldom prominent, same color as the body, inconspicuous, broadly lanceolate, shorter than or equaling and as wide as perigynia, apex acute.

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.

= 64