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 400 cm × 4 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 spotted red-brown, plane, apex truncate or concave;

ligule rounded, to 1 mm, free limb to 0.2 mm;

blades 15 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.

loosely paniculate, 4–10 cm × 7–15 mm, the proximal branches distinctly separate;

bracts scalelike, dilated with wide hyaline edges and prominent midvein; the proximal bracts setaceous, prolonged to 10–15 mm.

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.

yellow-brown to dark brown, 5–11-veined abaxially, occasionally 3–5-veined adaxially, body ovate, 3–3.6 × 1.2–1.6 mm, base rounded or cordate, conspicuous corky tissue distending the perigynium;

beak chestnut brown, 0.6–1.5 mm, apex white-hyaline, deeply bidentate.

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

brown, ovate, 1.5 × 1 mm.

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, pale brown with prominent white-hyaline margins, apex acute or obtuse.