Flora of North America species comparison

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

to 70 cm × 1.5 mm, scabrous.

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.

sheath fronts rugose, indistinctly spotted pale brown, apex convex, membranous;

ligule emarginate to acute, 0–4 mm, free limb to 0.2 mm;

blades 50 cm × 5 mm, shorter than flowering stem.

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.

spicate or somewhat capitate, 3–5 cm × 15–25 mm, with 10–15 branches, proximal not distinct; the proximal internode to 0.5 cm;

bracts scalelike, the proximal setaceous, conspicuous.

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.

dull yellow-brown turning medium brown, red-brown distally, (3–)5–7-veined abaxially, (0–)3–5-veined adaxially, body elliptic to ovate, 2.8–4 × 1.5–2 mm, base obtuse to rounded, usually with well-developed spongy tissue;

beak 1–1.5 mm, 1/3–1/2 length of perigynium.

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

red-brown, ovate, 1.5–1.7 × 1.5–1.8 mm, glossy.

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.

1.5–2.5 mm.

hyaline, brown, awn 0.5–2 mm.