Flora of North America species comparison

15–70 cm.

15–80 cm, 1.5–2 mm wide basally, 0.5 mm wide distally.

sheaths adaxially white-hyaline, summits U-shaped, occasionally shortly prolonged beyond collar;

distal ligules 0.8–1 mm;

blades 3–5 per fertile culm, often folded, 3.5–20 cm × 1–3 mm.

sheaths tight, green, fronts white-hyaline;

ligules less than 2 mm, wider than long;

widest leaf blades 1.5–2.5 mm wide.

stiffly erect, open or spikes loosely aggregate, if open, sometimes arching, whitish to pale brown, 1.5–5 cm × 5–10 mm;

proximal internode 5–10 mm; 2d internode 4–8 mm;

proximal bracts scalelike to bristlelike, shorter than inflorescences.

with 5–10 spikes, 2–5 cm × 5–10 mm;

proximal internodes 1–2 times as long as proximal spikes;

proximal bracts 1–2 cm;

spikes with 5–10 erect perigynia.

3–5, distant, distinct, ovoid-ellipsoid, 7–14 × 3–8 mm, base tapered to attenuate, apex acute.

essentially erect, pale yellowish brown, often with green beak, 8–10-veined abaxially, veinless or indistinctly 8–10-veined adaxially, ovate to broadly ovate, plano-convex or thickly concavo-convex, 3.8–4.8 × 1.4–2.2 mm, 0.5–0.6 mm thick, margin flat, including wing 0.2–0.4 mm wide, ciliate-serrulate at least on distal body;

beak white-hyaline at tip, flat, ± ciliate-serrulate to the bidentate apex, abaxial suture inconspicuous or white-hyaline, distance from beak tip to achene 1.4–2.2 mm.

pale green to pale brown, veinless or obscurely veined abaxially, 2.6–3.5 × 1.2–1.5 mm, margins serrulate distally;

beak 0.8–1.5 mm, apical teeth 0.3–0.5 mm.

ovate-oblong, 1.7–2.1 × 1.2–1.4 mm, 0.5–0.6 mm thick.

elliptic-circular, 1.5–1.7 × 1.1–1.2 mm.

scales whitish to yellowish, with 1-veined, green to gold midstripe, or white almost throughout at maturity, ovate, 4.4–6 mm, longer and as wide as and concealing perigynia, margin hyaline, 0.3–0.7 mm wide, apex acute.

scales brown with green midvein, ovate, 2.7–3.6 × 1.4–2.1 mm, body longer and wider than perigynium, apex awned.

not measured.

= 68.