Flora of North America species comparison

erect, not stiff, 15–90 cm.

dark purple-red to 2–3.2 cm high or rarely brown at base, 15–90 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 glabrous;

blades green, widest blades (3.7–)4.2–8.2(–9.1) mm wide, smooth abaxially.

2–15 cm × 5–10 mm;

proximal bracts shorter than to exceeding spikes;

distal bracts usually scalelike.

0.38–0.85 of culm height;

peduncles of lateral spikes smooth or barely scaberulous;

peduncles of terminal spikes 1.6–22(–51) mm, usually barely exceeding lateral spikes;

proximal bract sheath loose, abaxially glabrous, sheath front slightly concave to slightly convex, elongated 0.7–2.5(–4.4) mm beyond apex;

ligules (1.8–)3–7.5(–11.2) mm;

distal bract slightly exceeding or rarely much exceeding terminal spike.

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.

(3–)4–5(–6), distal 2–4 overlapping;

lateral spikes pistillate or rarely androgynous, with 3–19 perigynia, 5–31 × 6.7–11.4 mm, ratio of spike length (in mm) to flower number =1.6–2.1(–2.8);

terminal spikes 7–35 × 1.5–3.1 mm.

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.

spirally imbricate, 52–64-veined, unwrinkled, narrowly ellipsoid to obovoid, orbicular or suborbicular in cross section, (4.2–)4.5–5.1(–5.3) × (1.8–)2–2.6 mm, 1.8–2.3(–2.6) times as long as wide, lustrous, base very gradually tapered, apex gradually tapered;

beak absent or straight, 0–0.2 mm.

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

broadly obovoid to obovoid, widest at 0.6–0.66(–0.7) of body length, (2.6–)3.1–3.5(–3.7) × 1.7–2.1(–2.2) mm, loosely enveloped by perigynia;

stipe straight, (0.2–)0.3–0.4(–0.5) mm;

beak straight, (0.2–)0.3–0.6 mm.

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 4–8.2 × 2.1–2.6 mm, margins whitish, usually with red-brown speckles, entire, apex with awn 0.9–5.3 mm.

scales 2.7–5 × 1.1–2.1 mm.

2.3–3.3 mm.

= 56.