Flora of North America species comparison

erect, not stiff, 15–90 cm.

33–72 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.

sheath adaxially white-hyaline or brownish tinged, occasionally only in very narrow band extending 2.5 cm proximal to collar;

summit usually U-shaped;

distal ligules 1–2.5(–3.5) mm;

blades 3–4(–5) per fertile culm, 15–30 cm × (2.8–)3–4.5 mm.

2–15 cm × 5–10 mm;

proximal bracts shorter than to exceeding spikes;

distal bracts usually scalelike.

dense, green and brown, gold and brown, or light brown, (1.7–)2–3 cm × 15–21(–27) mm;

proximal internode (2–)3.5–7(–11) mm; 2d internode 2–5 mm;

proximal bracts bristlelike, shorter than inflorescences or occasionally 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.

4–5, distant, distinct, broadly ovoid, 11–16 × 6–12 mm, base rounded 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.

ascending or appressed-ascending, green to gold, veinless on each face or, occasionally, 6-veined abaxially, broadly ovate, usually flat except over achene, (5.5–)6–7.2 × 2.7–3.8 mm, 0.5–0.7 mm thick, 1.8–2.3 times as long as wide, margin flat, including wing 0.5–1.1 mm wide, ciliate-serrulate at least distally;

beak red-gold to red-brown, sometimes white-hyaline at tip, flat, ± ciliate-serrulate, abaxial suture with conspicuous white margin, distance from beak tip to achene 3–4.3 mm.

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

broadly ovate to broadly elliptic, (1.8–)2–2.3 × (1.1–)1.3–1.6 mm, (0.4–)0.5–0.7 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, red-brown, or chestnut-brown, sometimes with green to gold midstripe, lanceolate to broadly ovate, 4.7–6.7 mm, shorter and narrower than perigynia, margin white 0.1–0.2(–0.4) mm wide, apex acute to acuminate.

= 56.