Flora of North America species comparison

(24–)35–85 cm.

25–120 cm;

vegetative culms few, inconspicuous, usually fewer than 15 leaves, not strikingly 3-ranked.

sheath adaxially white-hyaline, summits U-shaped to rounded;

distal ligules 2–3 mm;

blades (1–)2–4(–5) per fertile culm, flat ± to tip, 7–22 cm × (1.5–)2–3.5(–4) mm.

sheaths adaxially white-hyaline, summits U-shaped or truncate and reaching to 1.5 mm beyond collar, smooth;

distal ligules 1.5–2.8 mm;

blades 3–5 per fertile culm, 9–35 cm × 1.7–3.8 mm.

stiffly erect, usually open, brown, 1.5–4 cm × 10–15 mm;

proximal internode (2.5–)4–10 mm; 2d internode (2.5–)3–6 mm;

proximal bracts scalelike or bristlelike, shorter than inflorescences.

congested or somewhat open, green to brown, 1.4–2.7(–3.4) cm × 7–16 mm;

proximal internode 3–9 mm; 2d internode 3–8 mm;

proximal bracts scalelike, bristle tips shorter than inflorescences.

5–9, usually loosely aggregated, ovoid to broadly ovoid, 9–14 × 6–8 mm, base attenuate, apex rounded to tapered.

2–5, distant, distinct, globose to ovoid, 10–35-flowered, 7–12 × 5–10 mm, base rounded or tapered, apex rounded;

terminal spike usually lacking conspicuous staminate base.

ascending to ascending-spreading, gold to light brown, conspicuously 3–9-veined abaxially, conspicuously 2–5-veined adaxially, lanceolate to ovate, usually flat except over achene, 3.4–4.7(–5.2) × 1.3–2.1 mm, 0.4–0.5 mm thick, margin flat, including wing 0.2–0.6 mm wide;

beak red-brown or gold at tip, usually cylindric, unwinged, ± entire for 0.3–0.5 mm, sometimes flat, ciliate-serrulate to tip, abaxial suture often with conspicuous white margin, distance from beak tip to achene (1.2–)1.5–2 mm.

(10–)15–40(–45) per spike, ascending, light greenish brown to brown with pale margin, conspicuously 6-veined or more abaxially, 4–6-veined adaxially, broadly ovate to orbiculate, plano-convex, 4–5.4 × 2.4–3.4 mm, 0.5–0.6 mm thick, margin flat, including wing 0.3–0.8 mm wide, smooth;

beak pale green or brown at tip, flat, 0.7–1.6(–1.8) mm, ciliate-serrulate, abaxial suture with white or hyaline golden brown margin, distance from beak tip to achene 1.7–2.6(–2.9) mm.

elliptic to broadly ovate, 1.1–1.8 × 0.9–1.2 mm, 0.4–0.5 mm thick.

broadly ovate to orbiculate, 1.6–2 × 1.4–1.8 mm, 0.5–0.6 mm thick.

scales reddish gold to brown or greenish, often white-hyaline at tip or base, with pale or green midstripe, narrowly to broadly ovate, 3.4–5 mm, length and width less or greater than perigynia, margin not white-hyaline, apex acute to acuminate.

scales yellowish brown, lance-ovate, 2.9–4 mm, 0.7–1.7 mm shorter than perigynium or reaching base or sometimes middle of perignyium beak, margins pale, apex acute or obtuse.

= 62, 64, 66, 68.

= 74.