Flora of North America species comparison

(24–)35–85 cm.

acutely or obtusely angled, 30–115 cm, scabrous.

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.

basal sheaths red-brown;

sheaths of proximal leaves glabrous, fronts lacking spots and veins, apex convex, prolonged;

blades 3–6 mm wide.

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 bract equal to inflorescence, 3–5 mm wide.

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

erect;

proximal 3–5 spikes pistillate, 2.5–10 cm × 3–5 mm, base attenuate;

terminal 2–3 spikes staminate.

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.

ascending, green, spots absent, 3–5-veined on each face, somewhat flattened, loosely enclosing achenes, ellipsoid, 1.7–3.2 × 1–2.1 mm, dull, apex rounded or obtuse, papillose;

beak 0.1–0.3 mm.

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

not constricted, dull.

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 pale or red-brown, equaling perigynia, apex acute, awnless.

= 62, 64, 66, 68.

= 72.