Flora of North America species comparison

to 90 cm × 2 mm, scabrous.

to 60 cm.

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.

blades 3–6 mm wide.

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.

longer than 15 cm, proximal internodes 100–250 mm;

peduncles of proximal spikes commonly exserted less than 1 cm;

proximal bracts with blade 40–125 mm, sheaths cylindric, 11–75 mm, mouth not purple-banded, 1.3–2.1 mm wide.

5–7;

lateral spikes androgynous or pistillate, the proximal spikes erect to pendent, 9–20 × 5–8 mm;

terminal spike staminate or androgynous, ± erect, 9–19 × 2.5–4.5 mm.

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.

spreading, green to gold, 11–16-veined, ovate to obovate, 3.1–4.5 × 1–1.6 mm, margins often ciliate distally, glabrous;

beak distinct, 0.6–1.2 mm, apex white, ciliate, distance from beak tip to achene apex less than 1.4 mm.

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

style base cylindric.

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

with prominent apiculus to 0.5 mm.

1.4–2.2 mm.

scales usually scarious with green to gold midvein, obovate to ovate, 2–4 × 1.2–2 mm, apex obtuse to acuminate or, sometimes, awned.

scales gold with pale midvein with broad scarious margins, usually obovate, 2.8–4.3 × 1–2.4 mm, apex acute to short-awned.