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.

30–100 cm.

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 papillose, summits U-shaped;

distal ligules 3.5–5 mm;

blades 4–5 per fertile culm, green, without auricles, 17–37 cm × 2–5 mm, pliable.

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.

arching or nodding from proximal spike, open at least proximally, silvery greenish yellow, 2.5–6.5 cm × 7–17 mm;

proximal internode 7–18 mm; 2d internode 3–10 mm; often aristate or long-aristate;

proximal bracts scalelike.

(3–)7–15, widely spaced except the distal densely aggregated, proximal 1 often stalked, nearly globose or ovoid, 6–17 × 4.5–7 mm, base clavate or attenuate, apex rounded.

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

beak tapering.

ascending to spreading, uniformly pale green to straw colored, conspicuously, evenly (4–)5–8(–10)-veined on each face, ovate to obovate, plano-convex, 3–4.5 × 1.9–2.3 mm, 0.6 mm thick, usually widest at 2/5–1/2 total length, margin flat, including wing 0.2–0.6 mm wide, finely granular-papillose;

beak whitish at tip, flat, ciliate-serrulate to within 0.3 mm of tip, abaxial suture inconspicuous, distance from beak tip to achene 1.2–2 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.

oblong-ovate, 1.5–1.75 × 1–1.2 mm, 1.4–1.6 times as long as wide, 0.5 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 silvery pale green with pale or green midstripe, lance-subulate, (3.2–)3.5–4.1(–4.6) mm, shorter and narrower than or equaling perigynia, margin white-hyaline, to 0.6 mm wide, apex 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.

= 80.