Flora of North America species comparison

(24–)35–85 cm.

usually aphyllopodic, without dead leaf remains at base, 20–60 cm.

sheath adaxially white-hyaline, summits U-shaped to rounded;

distal ligules 2–3 mm;

blades (1–)2–4(–5) per fertile culm, flat ± to tip, 7–22 cm × (1.5–)2–3.5(–4) mm.

blades 1–2.5 mm wide, margins involute, scabrid.

stiffly erect, usually open, brown, 1.5–4 cm × 10–15 mm;

proximal internode (2.5–)4–10 mm; 2d internode (2.5–)3–6 mm;

proximal bracts scalelike or bristlelike, shorter than inflorescences.

proximal bracts 2–6 cm, shorter than inflorescences;

lateral spikes sometimes androgynous, 6–20 × 4–8 mm, with 8–30 perigynia;

terminal spikes 7–35 × 1.5–2.5(–3) mm.

5–9, usually loosely aggregated, ovoid to broadly ovoid, 9–14 × 6–8 mm, base attenuate, apex rounded to tapered.

ascending to ascending-spreading, gold to light brown, conspicuously 3–9-veined abaxially, conspicuously 2–5-veined adaxially, lanceolate to ovate, usually flat except over achene, 3.4–4.7(–5.2) × 1.3–2.1 mm, 0.4–0.5 mm thick, margin flat, including wing 0.2–0.6 mm wide;

beak red-brown or gold at tip, usually cylindric, unwinged, ± entire for 0.3–0.5 mm, sometimes flat, ciliate-serrulate to tip, abaxial suture often with conspicuous white margin, distance from beak tip to achene (1.2–)1.5–2 mm.

2.5–4 × 1.8–2.6 mm, apex rounded;

beak 0.1–0.5 mm.

elliptic to broadly ovate, 1.1–1.8 × 0.9–1.2 mm, 0.4–0.5 mm thick.

scales reddish gold to brown or greenish, often white-hyaline at tip or base, with pale or green midstripe, narrowly to broadly ovate, 3.4–5 mm, length and width less or greater than perigynia, margin not white-hyaline, apex acute to acuminate.

scales ovate to ovate-circular, 3–5.5 × 2–3.4 mm, wider and as long as or slightly longer than perigynia, apex obtuse to subacute, sometimes mucronate.

scales obovate, 3–4.5 × 1.4–1.6 mm, apex obtuse, sometimes mucronate.

2–3 mm.

= 62, 64, 66, 68.