Flora of North America species comparison

to 100 cm × 2 mm, scabrous.

5–17 cm, scabrous distally;

bases (remnants of old leaves) weakly fibrous.

sheath fronts spotted red-brown or pale brown, apex truncate or short-convex, membranous or hyaline, rugose;

ligule retuse or rounded, to 2 mm, free limb to 0.2 mm;

blades 120 cm × 5 mm, longer than flowering stem.

blades green, occasionally glaucous, exceeding culms, 1.7–3 mm wide, herbaceous, papillose to scabrous abaxially, papillose to scabrous adaxially.

spicate, (3–)7–10 cm × 15 mm, with 10–15 branches, the proximal branches distinctly separate; the proximal internode to 25 mm;

bracts setaceous, those subtending at least the proximal lateral branches conspicuous.

with both staminate and pistillate spikes;

peduncles of staminate spikes 0.3–1.2 mm;

proximal cauline bracts leakflike, shorter than inflorescences.

proximal pistillate spikes 2–3 (basal spikes 0);

cauline spikes overlapping, proximal 2 separated by less than 7 mm, with 4–8 perigynia; staminate spikes (3–)6.1–9.3 × 1.1–1.7 mm.

green to pale brown, veinless on both faces or 3-veined abaxially, body ovate or elliptic, 2–3.2 × 1.3–1.8 mm, base obtuse;

beak 0.8–1.2 mm, 1/3–1/2 length of perigynium.

pale green, veinless, ellipsoid, 3–4.1 × 0.9–1.4 mm;

beak straight, pale green, 0.6–0.9 mm, weakly ciliate-serrulate, apical teeth 0.1–0.3 mm.

red-brown, ovate, 1.2–1.4 × 1 mm, glossy.

brown, ellipsoid, biconvex, flattened-trigonous, or evenly trigonous with convex sides (all three types may occur on the same plant), 1.5–2 × 0.9–1.3 mm.

pale brown, hyaline, awn to 3 mm.

pistillate scales pale to dark reddish brown, with narrow white margins, ovate to lanceolate, 2.7–4.2 × 1.2–2 mm, shorter than to equaling perigynia, apex acute to acuminate or short-aristate; staminate scales lanceolate, 2.8–4 × 1.2–1.8 mm, apex obtuse or acute to acuminate.

1.8–2 mm.

2(–3).

= 52.