Flora of North America species comparison

10–35 cm.

50–90 cm;

vegetative culms with numerous leaves spaced evenly along distal 1/2.

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 adaxially green-veined nearly to collar with V-shaped hyaline band extending 4–20 mm proximal to collar, somewhat loose, expanded near summit, ± wing-angled, adaxially firm, summits thin, U-shaped to rounded, sometimes shortly prolonged beyond collar;

distal ligules 4–9 mm;

blades 3–6 per fertile culm, 18–40 cm × 3–7 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.

nodding, open at least proximally, pale brown, 2.5–6 cm × 7–14 mm;

proximal internode 5–12(–18) mm; 2d internode 3–11 mm;

proximal bracts scalelike, sometimes bristlelike to 3 cm.

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

8–15, proximal spikes well spearated, nearly globose, 9–12 × 6–8(–9) mm, base tapered, 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.

usually 15–30 per spike, ascending to reflexed, with divergent beak, pale brown; conspicuously (3–)5–8-veined abaxially, conspicuously 3–6-veined adaxially, lanceolate, flat to plano-convex, thin, 2.9–4.3 × 1.2–1.6 mm, 0.3 mm thick, margin flat, including wing 0.2 mm wide;

beak sometimes red-brown at tip, flat, ciliate-serrulate, distance from beak tip to achene 1.6–2.4 mm.

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

ovate to oblong, 1.1–1.7 × 0.6–1 mm, 0.3 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 to brown with brown or green midstripe not reaching tip, oblong-lanceolate to oblong-ovate, 2–2.7 × 0.9–1.5 mm, shorter and narrower than perigynia, apex obtuse to nearly acute.

long-persistent.

= 64.