Flora of North America species comparison

(20–)30–100 cm, 1.5–3.5 mm wide basally, 0.7–1.2 mm wide distally.

50–85 cm.

sheaths usually loose, proximal green-and-white-striped and green-and-white-mottled, with conspicous transverse veins on back, fronts white to hyaline, sometimes red dotted and transversely rugose, yellow or brown and thickened at mouth;

ligules 1–4.5 mm, shorter than to as long as wide;

widest leaf blades 3.5–5 mm wide.

sheaths often green-veined, white-hyaline at least 10 mm below summit, ± firm, summits U-shaped or rounded, prolonged to 4 mm beyond collar;

distal ligules 1–4 mm;

blades 3–6 per fertile culm, flat or folded, 14–50 cm × (2.3–)3–5 mm.

with 5–10 spikes, (1.5–)2–5 cm × 8–13 mm;

proximal internodes shorter than to as long as proximal spikes;

proximal bracts to 3 cm;

spikes with 5–15 ascending to spreading perigynia.

usually dense, greenish or gold, usually oblong, 1.9–5 cm × 12–19 mm;

proximal internode 2.5–5(–7) mm; 2d internode 2–5.5 mm;

proximal bracts scalelike or bristlelike, shorter than inflorescences.

5–14, aggregated or proximal 1 more distant, narrowly to broadly ovoid, 9–18 × 6–9(–11) mm, base rounded to attenuate, apex truncate to tapered.

pale green to pale brown, veinless or weakly 2–5-veined abaxially, 3.4–4.6 × 1.9–2.8 mm, body somewhat spongy, thickened at base, margins serrulate distally;

beak 0.7–1.4 mm, apical teeth 0.3–1 mm.

appressed to ascending, green to straw colored, conspicuously usually 10–18-veined abaxially, conspicuously 4–10-veined adaxially, at least 3 adaxial veins longer than achene, lanceolate to ovate, plano-convex, 4.9–6.3(–7) × 1.5–1.8(–2) mm, 0.5–0.7 mm thick, margin flat, including wing 0.25–0.4 mm wide, ciliate-serrulate at least on distal body;

beak gold to red-brown at tip, flat, ± ciliate-serrulate, abaxial suture inconspicuous, distance from beak tip to achene 2.7–4.2 mm.

circular to elliptic-circular, 1.8–2.1 × 1.6–1.8 mm.

elliptic to obovate, 1.6–2(–2.3) × 1–1.5 mm, 0.4–0.5(–0.6) mm thick.

scales hyaline or pale brown with green, 1–3-veined center, ovate, 2.2–3.5 × 1.2–1.8 mm, body 2/3 as long to almost length of perigynia, apex acuminate to short-awned.

scales green to gold or red-brown, with pale midstripe, lanceolate to ovate, (3.9–)4.3–5.2 mm, shorter than or ± equaling and narrower than perigynia, margin white, 0–0.5 mm wide, apex acute to acuminate.

1.5–2.5 mm.