Flora of North America species comparison

erect, not stiff, 15–90 cm.

strongly purple-red or yellow-brown tinged with purple-red to 4.8–10.4 cm high at base, 20–60(–68) 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 2.4–5.1(–6.7) mm wide, smooth abaxially.

2–15 cm × 5–10 mm;

proximal bracts shorter than to exceeding spikes;

distal bracts usually scalelike.

0.21–0.57(–0.95) of culm height;

peduncles of lateral spikes scaberulous;

peduncles of terminal spikes (2.5–)18–121 mm, usually much exceeding lateral spikes;

proximal bract with sheaths tight, abaxially glabrous, sheath front apex concave, elongated 0.2–2.5 mm;

ligules 0.2–4.3 mm;

distal bract shorter than 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.

1–3, widely separate;

lateral spikes pistillate or androgynous, with 3–13(–22) perigynia, (19–)13–39 × 3.9–8.3 mm, ratio of spike length (in mm) to flower number = 1.7–3.4;

terminal spikes (16–)20–43 × (2.8–)3.3–4.5(–5.4) 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, 42–65-veined, unwrinkled, obovoid or narrowly obovoid, obtusely triangular in cross section, 3.4–5.1 × 1.5–2 mm, 1.8–2.5(–3.2) times as long as wide, dull, base gradually tapered, apex gradually or abruptly tapered to subacute;

beak absent or excurved, 0–0.4(–1.2) mm.

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

obovoid, 2.6–3.4 × 1.4–1.8 mm, tightly enveloped by perigynia;

stipe 0.1–0.3(–0.6) mm, bent 30–60°;

beak bent 35–80°, 0.25–0.45 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 3.3–11.1(–17.9) × 2–2.8 mm, margins entire, whitish, apex with awn 0.2–8.3(–13.7) mm.

scales 4.2–5.7 × 1.2–1.6 mm.

2.4–4.4 mm.

= 56.