Flora of North America species comparison

erect or ascending, 7–30 cm × 0.2–0.5 mm;

vegetative shoots taller than culms, (1.4–)1.7–3.7(–4.9) times as tall as tallest flowering culm, blades of vegetative shoots 1–3.5 times wider than bract blades.

20–90 cm;

vegetative culms inconspicuous with few leaves clustered at apex.

basal sheaths white to light brown;

nonbasal sheaths 1–4 mm;

blades erect, drooping or recurved, dark green to grayish blue-green, 11–38 cm × 3–9 mm, usually exceeding culms.

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.

spikes (3–)4 per culm, scattered;

peduncles of proximal pistillate spikes erect, 3–15 mm;

bracts dark green to glaucous, 1–10.5 cm × 1.5–4 mm, well developed, blade of distal lateral spike 5.6–17(–26) times as long as wide.

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.

(3–)8–13 per spike, spirally overlapping, finely veined, obovoid, 2.8–4.2 × 1.4–2 mm;

beak tapering.

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.

short, tapering from swelling just beyond attachment to achene, bent, ascending through entire orifice.

ellipsoid, 2.6–4 × 1.2–1.8 mm, sides flat at maturity, filling perigynia.

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

spikes: proximal usually basal, proximal spikes on usually erect peduncles, distal sessile to very short-pedunculate, 6–12 × 3.5–6 mm, often hidden in foliage.; pistillate scales 1.5–2 × 0.8–1 mm, midribs green, margins hyaline, apex acute, proximal scales of lateral spikes subtending perigynia.

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.

spike sessile or nearly so, (3.5–)4.5–10.2(–11.5) × 0.6–1.4(–1.6) mm, often hidden by distal bract and/or pistillate spikes.; staminate scales 2.6–3.6(–3.8) × 0.8–1 mm, midribs green, margins hyaline, apex obtuse.

1.2–1.8 mm.

= 68, 70.