Flora of North America species comparison

yellow-brown to dark brown at base, 15–60 cm.

15–70 cm.

sheaths hispidulous;

blades green, widest blades (3–)3.4–5.4(–6.5) mm wide, glabrous abaxially or sparsely hispidulous on midrib.

sheaths adaxially white-hyaline, summits U-shaped, occasionally shortly prolonged beyond collar;

distal ligules 0.8–1 mm;

blades 3–5 per fertile culm, often folded, 3.5–20 cm × 1–3 mm.

0.19–0.48 of culm height;

peduncles of lateral spikes smooth or barely scaberulous;

peduncles of terminal spikes (4.2–)7.5–37(–43) mm, much exceeding lateral spikes;

proximal bract with sheath tight, abaxially scabrous, sheath front apex convex, elongated (0.6–)1.6–4.9(–6.6) mm beyond apex;

ligules 3.3–5 mm;

distal bract usually much exceeding terminal spike.

stiffly erect, open or spikes loosely aggregate, if open, sometimes arching, whitish to pale brown, 1.5–5 cm × 5–10 mm;

proximal internode 5–10 mm; 2d internode 4–8 mm;

proximal bracts scalelike to bristlelike, shorter than inflorescences.

3–5, separate or distal 2–4 spikes overlapping;

lateral spikes pistillate, with 2–7 perigynia, 6–29 × 3.8–6.8 mm, ratio of spike length (in mm) to flower number = 3.5–4.8;

longest terminal spikes 14–34(–42) × 1.3–3(–3.5) mm.

3–5, distant, distinct, ovoid-ellipsoid, 7–14 × 3–8 mm, base tapered to attenuate, apex acute.

distichously imbricate, 52–59-veined, unwrinkled, obovoid or narrowly obovoid, obtusely triangular in cross section, (4.5–)4.6–5.6(–6.2) × 1.9–2.2(–2.3) mm, (2.1–)2.3–2.8(–3) times as long as wide, dull, base gradually tapered, apex abruptly contracted;

beak excurved, (0.5–)0.8–1.3 mm.

essentially erect, pale yellowish brown, often with green beak, 8–10-veined abaxially, veinless or indistinctly 8–10-veined adaxially, ovate to broadly ovate, plano-convex or thickly concavo-convex, 3.8–4.8 × 1.4–2.2 mm, 0.5–0.6 mm thick, margin flat, including wing 0.2–0.4 mm wide, ciliate-serrulate at least on distal body;

beak white-hyaline at tip, flat, ± ciliate-serrulate to the bidentate apex, abaxial suture inconspicuous or white-hyaline, distance from beak tip to achene 1.4–2.2 mm.

obovoid-ellipsoid, 3.2–3.9(–4.2) × (1.6–)1.8–2.1 mm, tightly enveloped by perigynia;

stipe bent 45–70°, 0.4–0.6 mm;

beak bent more than 90°, 0.3–0.5 mm.

ovate-oblong, 1.7–2.1 × 1.2–1.4 mm, 0.5–0.6 mm thick.

scales (4.1–)5.6–9.4(–11.6) × 1.6–2.6(–3.3) mm, margins whitish, denticulate, apex with awn 1.1–6.8 mm.

scales whitish to yellowish, with 1-veined, green to gold midstripe, or white almost throughout at maturity, ovate, 4.4–6 mm, longer and as wide as and concealing perigynia, margin hyaline, 0.3–0.7 mm wide, apex acute.

scales 5.2–6.9 × 1.5–1.7 mm.

3.4–4.2 mm.

= 68.