Flora of North America species comparison

to 75 cm × 2 mm, scabrous.

20–90 cm;

vegetative culms inconspicuous with few leaves clustered at apex.

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

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

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

sheaths white-hyaline or green-veined, sometimes papillose, summits U-shaped, not distally expanded;

distal ligules 2.2–6 mm;

blades 3–4 per fertile culm, 11–25 cm × 1.7–4.2 mm.

spicate, 4–7 cm × 15 mm, with 10–15 branches, proximal usually distinct;

proximal internodes to 1.5 cm;

bracts setaceous, proximal 1–3 conspicuous, distal bracts scalelike.

mostly dense, brown, 1.1–3 cm × 5–14 mm;

proximal internode 1–4 mm; 2d internode 1.4–3.4 mm;

proximal bracts scalelike, with bristle tips shorter than inflorescences.

3–10, usually overlapping, ovoid to globose, 4–10 × 3–7 mm, base rounded or truncate, apex rounded.

golden brown, 3-veined abaxially, body broadly elliptic to ovate, 2.2–3 × 1.5–2.2 mm, base rounded;

beak 0.5–1.2 mm, 1/3 length of body.

ascending to ascending-spreading, light to dark reddish brown, conspicuously 3+-veined abaxially, faintly or basally 1–3-veined adaxially, winged to base, ovate or elliptic, plano-convex, 2.5–3.8 × (1–)1.2–2 mm, 0.35–0.45 mm thick, 1.9–2.5 times as long as wide, margin flat, including wing 0.2–0.5 mm wide, 1b ciliate-serrulate at least distally;

beak reddish brown at tip, flat, ± ciliate-serrulate, abaxial suture with reddish brown-hyaline margin, distance from beak tip to achene 1.2–2.2 mm.

red-brown, circular, 1.2–1.5 × 1–1.2 mm, glossy.

ovate or elliptic, 1–1.3 × 0.6–0.9 mm, 0.3–0.4 mm thick.

hyaline, red-brown with narrow colorless margins, awn to 1.5 mm.

scales reddish brown, usually with green or whitish to brown midstripe, lanceolate, 2.5–3.5 mm, shorter and narrower than perigynia, apex acuminate or acute.

= 68, 70.