Flora of North America species comparison

erect or ascending, 7–52 cm × 0.5–1 mm.

15–120 cm.

basal sheaths white or light brown;

nonbasal sheaths green, 8–37 mm;

blades green, 8–44 cm × 0.8–5 mm, shorter than or overtopping culm, 0.5–1.3(–1.8) times as tall as tallest flowering culm;

blades of vegetative shoots 1–3.5 times wider than bract blades.

sheath white hyaline or green-veined, summits usually U-shaped, often prolonged to 4 mm beyond collar;

distal ligules 1–2.5(–4) mm;

blades 3–4(–5) per fertile culm, 10–30 cm × 1.2–4.2(–6.5) mm.

2.2–11.4 cm × 1–3 mm.

spikes (2–)4 per culm, scattered;

peduncles of pistillate spikes 0.5–10.2 cm; of staminate spike 0.4–8.7 cm.

dense or open, gold to dark brown, 0.9–2.8 cm × 6.7–16.3 mm;

proximal internode 0.7–4.5(–9) mm; 2d internode 0.7–4 mm;

proximal bracts usually scalelike, sometimes bristlelike, shorter than inflorescences.

3–9(–13), distinct or densely aggregated and individually indistinct, ovoid to broadly ovoid, 4.4–10 × 3.2–8.7 mm, appearing coarse-textured, base acute to rounded, apex rounded.

3–9 per spike, finely veined, obovoid, 2–4.2 × 1.2–1.8 mm;

beak tapering.

ascending to spreading, golden brown or coppery to blackish, conspicuously (0–)2–9-veined abaxially, conspicuously 0–4(–7)-veined adaxially, veins reaching top of achene, ovate to elliptic-ovate, plano-convex, 2.8–4.7(–5.1) × 1.1–2.3 mm, 0.5–0.7 mm thick, margin flat, including wing 0.2–0.4 mm wide, sometimes filled with pithlike tissue near base, ciliate-serrulate at least on distal body, occasionally with white margin, with metallic sheen;

beak red-brown to black at tip, sometimes white-hyaline, cylindric, unwinged, ± entire for 0.4–0.7 mm, suture usually inconspicuous, distance from beak tip to achene 1.5–2.2(–2.8) mm.

slender, ascending through entire orifice.

obovoid, 1.8–2.8 × 1–1.6 mm, sides plane or slightly concave at maturity, tightly fitting perigynia.

elliptic to broadly ovate, 1.2–1.9 × 0.7–1.4 mm, 0.4–0.6 mm thick.

spikes: proximal usually basal, erect, ascending, or drooping, short to long pedunclulate, 6–18 × 4–5 mm.; pistillate scales keeled, 1.8–2 × 1–1.2 mm, midribs green, margins hyaline, apex acute, proximal scales of lateral spikes subtending perigyinia.

scales dark gold or red-brown to dark brown, usually with pale or green midstripe, ovate, 2.2–3.7(–4.2) mm, less than or equaling perigynia in length and width, margin white, 0–0.15 mm wide, apex obtuse to long-acute.

spike 1, linear to linear-clavate, 11–24 × (1–)1.2–2.7 mm.; staminate scales oblong, 2–3.6(–5.5) × 1–1.5 mm, midribs green, margins hyaline, frequently brown tinged, apex acute.

2–3.3 mm.

= 74.