Flora of North America species comparison

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

often lax, supported by other vegetation, 27–105 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 white-hyaline or green-veined with central white-hyaline strip, summits U-shaped to rounded, sometimes prolonged beyond collar;

distal ligules 1.5–5.5 mm;

blades 3–6 per fertile culm, 12–65 cm × 1.3–3.7(–4.6) 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.

dense to open, green and brown, gold and brown, or brown, 1.3–3.5 cm × 7–23 mm;

proximal internode 2–3(–4.5) mm; 2d internode 1–3 mm;

proximal bracts bristlelike or rarely leaflike, longer than inflorescences.

4–11, densely aggregated, at least proximal 1–3 distinct, ovoid to broadly ovoid, 6–12.3 × 3.8–9.1 mm;

base rounded;

apex acute to rounded.

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.

ascending to spreading, straw colored or gold to coppery, conspicuously (0–)5–9-veined abaxially, conspicuously 0–6-veined adaxially, veins not reaching top of achene, ovate to broadly ovate, plano-convex to biconvex, (2.9–)3.5–4.7(–5.7) × 1.2–1.7(–2.2) mm, 0.5–0.75 mm thick, ± leathery, margin flat, including wing 0.2–0.4 mm wide, ciliate-serrulate at least on distal body, with metallic sheen;

beak often brown to dark brown at tip or white-hyaline, cylindric, unwinged, abaxial suture inconspicuous, distance from beak tip to achene 1.5–2.2(–2.6) mm, ± entire for (0.3–) 0.4–0.8 mm.

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

broadly ovate to quadrate, 1.3–2.1 × 1–1.5(–1.7) mm, 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 brown, red-brown, or coppery, with whitish, green, or pale brown midstripe, ovate, (3.2–)3.5–4.5 mm, shorter, narrower than, or covering perigynia, margin often indistinct, white, 0–0.4 mm wide, apex ± obtuse or rarely short-awned.

1.5–2.5 mm.