Flora of North America species comparison

erect, not stiff, 15–90 cm.

trigonous in cross section, 30–85 cm, scabrous angled distally.

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.

basal sheaths reddish purple;

ligules as wide as to longer than wide;

blades light green, glabrous, flat to W-shaped, widest leaves 1.8–4.3(–5) mm wide.

2–15 cm × 5–10 mm;

proximal bracts shorter than to exceeding spikes;

distal bracts usually scalelike.

8–30 cm;

proximal bract (3–)9–35 cm, mostly equaling or exceeding inflorescence;

proximal 1–3 spikes pistillate, erect or, sometimes, the proximal spreading, cylindric;

terminal 1–3 spikes staminate.

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.

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 to spreading, often green or straw colored, strongly 9–12-veined, veins running into beak, lance-ovate, 5.9–10.2 × 2.4–3.3 mm, apex contracted;

beak 2.4–4.2(–4.8) mm, bidentate, finely scabrous at least near tip and on teeth, teeth straight, to 0.5–1.4 mm.

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

brown, symmetric, not indented, trigonous, smooth.

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 narrowly ovate, 3.5–5.2 × 1.1–2.1 mm, shorter than perigynia, margins entire, apex obtuse to acute, awnless.

3.

= 56.