Flora of North America species comparison

to 90 cm × 2 mm, scabrous.

to 80 cm × 3–8 mm, scabrous.

sheath fronts spotted red-brown, veinless, plane, apex truncate to convex, membranous;

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

blades to 75 cm × 6 mm, shorter than flowering stem.

sheath fronts not spotted, slightly thickened near hyaline margins, apex convex, membranous, rugose;

ligule retuse or rounded, to 3 mm, free limb to 0.2 mm;

blades 60 cm × 5 mm, shorter than flowering stem.

loosely paniculate, 4–12 cm × 15–20 mm, with 10–20 branches proximal branches distinct; the proximal internode to 25 mm;

bracts scalelike, not conspicuous, the awn, when present, 15–50 mm.

spicate, 3–7 cm × 15–25 mm, with 10–15 branches, proximal branches not distinctly separate; the proximal internode to 10 mm;

bracts setaceous, usually only the proximal conspicuous.

dark brown-black, 3–5-veined abaxially, 0–3-veined adaxially, body ovate to lanceolate, 3–4.5 × 1.5–2 mm, base rounded to cordate, conspicuous basal spongy tissue somewhat distending perigynium;

beak 1–1.5 mm.

pale brown, body broadly ovate, 3.2–4 × 2–2.6 mm, base rounded or cordate, apex abruptly contracted to beak;

beak 1.3–1.5 mm, 1/3 length of perigynium.

red-brown, ovate, 1.2–1.5 × 1–1.2 mm, glossy;

style base cylindric.

brown, ovate, 1.5–1.9 × 1.2–1.6 mm, dull.

hyaline, red-brown or pale brown, margins colorless, broad, shining, apex acute or mucronate.

hyaline, pale brown, becoming colorless with green midrib, awn usually not longer than the body.

with prominent apiculus to 0.5 mm.