Flora of North America species comparison

10–35 cm.

often nodding, 20–90 cm, vegetative culms inconspicuous with few leaves clustered at apex.

sheath adaxially white-hyaline, summits U-shaped;

distal ligules 0.9–2 mm;

blades 2–4(–5) per fertile culm, occasionally folded, 6–20 cm × (0.5–)1–2(–2.5) mm, if not folded, margins revolute.

sheaths abaxially hyaline, adaxially whitish mottled, summits U-shaped, shortly prolonged less than 2.8 mm beyond collar, smooth or sometimes papillose (at 30X);

distal ligules 1–2 mm;

blades 3–5 per fertile culm, 15–35 cm × 1.3–2.5(–3) mm.

dense or open, gold to dark brown, 1.7–3 cm × 11–18 mm;

proximal internode 4–8.6 mm; 2d internode 1.5–3.5 mm;

proximal bracts usually scalelike or bristlelike, occasionally leaflike, shorter than inflorescences.

often flexible and nodding, open, with elongate spikes, brown, (2–)2.5–5 cm × 7–10 mm;

proximal internode (4–)7–17(–20) mm; 2d internode (3–)6–10 mm;

proximal bracts scalelike or to 1(–4) cm;

rachis usually thin and wiry.

3–6, distant to loosely aggregated, distinct or individually indistinct, broadly ovoid, 10–15 × 7–9 mm, base acute to attenuate, apex rounded.

3–8, distant or loosely aggregated, ovoid to globose, 4–10 × 3.5–6 mm, base tapered or clavate, apex rounded.

ascending to spreading, gold to coppery; conspicuously 3–11-veined abaxially, conspicuously 0–13-veined adaxially, broadly ovate, usually flat, 4.3–6.3 × 2–3 mm, 0.25–0.5 mm thick, margin flat, including wing 0.4–0.9 mm wide, edge often minutely crinkled;

beak red-brown or brown, usually white-hyaline at tip, cylindric, unwinged, ± entire for (0.3–)0.5–0.9 mm, ciliate-serrulate at least on distal body, abaxial suture inconspicuous or with conspicuous white margin, distance from beak tip to achene (1.9–)2.2–3.7 mm.

erect to ascending, brown, conspicuously 5–7-veined abaxially, veinless or faintly 3–7-veined adaxially, ovate to broadly ovate, plano-convex, 2.8–4(–4.5) × 1.4–1.9(–2) mm, 0.4–0.5 mm thick, 2–2.3 times as long as wide, margin flat, including wing 0.1–0.5 mm wide, ciliate-serrulate at least distally;

beak spreading, appressed or ascending;

straw colored to reddish brown at tip, flat, ± ciliate-serrulate, abaxial suture inconspicuous, distance from beak tip to achene 1.3–2.7 mm.

elliptic, 1.5–2.1 × 0.75–1.1(–1.3) mm, 0.25–0.5 mm thick.

ovate, 1.3–1.7 × 0.85–1.1 mm, 0.5 mm thick.

scales gold or reddish to dark brown, with pale midstripe, lanceolate to ovate, 3.5–4.8 mm, usually shorter than and 1/3–1/2 width of perigynia, margin white, 0–0.2 mm wide, apex obtuse to acuminate.

scales white-hyaline or pale brown with green to brown midstripe not reaching scale tip, proximal scales ovate, 2.3–3.3 mm, shorter by 0–1.6 mm and narrower than perigynia, apex obtuse on proximal scales, acute on distal.

long-persistent.

= 52, 54, 56.