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.

(35–)40–110 cm;

vegetative culms few, inconspicuous, with 6–8 leaves, not strikingly 3-ranked.

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 adaxially white-hyaline, summits concave or truncate, prolonged beyond collar to 2.5 mm, papillose at least near apex;

distal ligules 1–5 mm;

blades 3–4 per fertile culm, 2.5–25 cm × 2–5 mm, usually adaxially papillose.

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.

open, pale brown, 0.24–0.62 cm × 8–15 mm;

proximal internode 5–17 mm; 2d internode 3–10 mm;

proximal bracts scalelike, with bristle tips shorter than inflorescences.

3–6(–8), distant, distinct, ovoid to clavate, 7–21 × 5.5–12 mm, base rounded to long tapered, apex rounded.

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

beak tapering.

15–80 in larger spikes, ascending or ascending-spreading, green to pale whitish green with reddish brown margin, conspicuously 8–12-veined abaxially, 4–8-veined adaxially, broadly elliptic to nearly orbiculate, (4.5–)5.1–6.7(–7.1) × (2.4–)2.8–4.2 mm, 0.5–0.7 mm thick, membranaceous with brown achene visible through hyaline adaxial face, margin flat, including wing 0.8–1.2 mm wide, often erose, scalloped, or with an irregular tooth, smooth;

beak pale brown at tip, flat, ciliate-serrulate, abaxial suture inconspicuous, distance from beak tip to achene 2.4–3.7 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.

elliptic to oblong, 1.6–2.2 × 1.1–1.6 mm, 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 reddish brown with green midstripe, lance-ovate to ovate, 3.1–5.4 mm, 1.9–3.2 times as long as wide, (1–)1.4–2.3 mm shorter than perigynia, narrower than perignyia, apex obtuse to 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.

scales obtuse.

1.2–1.8 mm.

(2.4–)2.8–4.2 mm.

= 76, 78.