Flora of North America species comparison

erect, not stiff, 15–90 cm.

30–70(–110) cm.

sheaths pale brown abaxially, inner band thin, hyaline, sometimes slightly red tinged, concave at summit;

ligules slightly longer than wide;

blades pale green to gray-green flat, 10–20(–30) cm × (1.5–)2–4 mm, subequal to shorter than culms, not stiff.

sheaths adaxially white-hyaline, often brownish tinged, summits U- or V-shaped, prolonged to 0–0.5(–1) mm beyond collar;

distal ligules 1.5–3 mm;

blades (2–)3–4 per fertile culm, 11–40(–50) cm × 1.4–3.5(–4) mm.

2–15 cm × 5–10 mm;

proximal bracts shorter than to exceeding spikes;

distal bracts usually scalelike.

open or dense, brown or gold, 1.5–3 cm × 8–12 mm;

proximal internode 2.5–7 mm; 2d internode 1.5–4.5 mm;

proximal bracts bristlelike or leaflike.

4–8, gynecandrous, proximal ± remote, distal spikes approximate, sometimes flexuous, containing (5–)10–20(–30) perigynia suborbicular to oblong, 3–12 × 3–5 mm;

terminal spike staminate for less than 1/2 of length, often clavate due to more conspicuous staminate part.

4–8(–9), distant to loosely aggregated, at least proximal 1–3 distinct, narrowly to broadly ovoid, (8–)10–11 × 4–6.5 mm, base acute to attenuate, apex acute to truncate.

appressed-ascending, gray-green, becoming yellowish brown, obscurely many-veined, elliptic-ovate, 1.8–3 × 1.2–1.7 mm, widest near middle, membranous;

beak abaxial suture inconspicuous, small marginal teeth.

appressed-ascending to ascending, green or straw colored to light brown, often green distally, conspicuously 5–9-veined abaxially, conspicuously 0(–3)-veined adaxially, narrowly to sometimes broadly ovate, plano-convex or biconvex, 3.5–4.5(–5.4) × 1.5–1.9 mm, 0.6–0.7 mm thick, ± leathery, margin flat, including wing 0.15–0.3 mm wide, ciliate-serrulate at least on distal body, sometimes filled with pithlike tissue towards perigynium base, often with metallic sheen;

beak brown or gold at tip, cylindric, unwinged, abaxial suture usually inconspicuous, distance from beak tip to achene 1.5–2.2(–2.8) mm, ± entire for 0.5–1 mm.

pale brown, oblong-obovate, 1.25–1.5 × 1–1.25 mm, dull to slightly glossy.

elliptic to broadly ovate, (1.5–)1.7–2.1(–2.3) × 1.05–1.45 mm, 0.5–0.65 mm thick.

scales hyaline with green, 3-veined center when young, usually brownish tinged in age, broadly ovate, subequal to, not concealing perigynia, apex obtuse to acutish.

scales gold or red-gold to chestnut-brown, often with green, gold, or whitish midstripe, ovate to broadly ovate, 3.1–3.6(–4.2) mm, less than or equal to perigynia length, width, margin white, 0–0.2(–0.3) mm wide, apex obtuse to acuminate.

= 56.