Flora of North America species comparison

erect, not stiff, 15–90 cm.

10–85 cm, 1.8–2.2 mm wide basally, 0.5–0.9 mm wide distally;

basal scales and sheaths usually red or purple tinged.

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 tight, green, fronts hyaline;

ligules (3.5–)4–8 mm, longer than wide;

widest leaf blades 2–4 mm wide, often papillose adaxially.

2–15 cm × 5–10 mm;

proximal bracts shorter than to exceeding spikes;

distal bracts usually scalelike.

with 3–8 spikes, 1–4 cm × 6–10 mm;

proximal internodes as long as or slightly longer than proximal spikes;

proximal bracts to 2 cm;

spikes with 5–10 spreading to ascending perigynia.

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.

greenish brown finally becoming black and glossy, veinless or to 7-veined abaxially, 4–5.5 × 2.2–2.4 mm, base of body somewhat spongy, thickened, margins serrulate distally;

beak 1.5–2 mm, apical teeth 0.3–0.6 mm.

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

suborbiculate, 2–2.3 × 2 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 brown with green 1–3-veined center, lanceolate to ovate, 3.2–4.5 × 1.7–2.2 mm, body slightly shorter and slightly narrower than perigynium, apex acuminate to short-awned.

1.5–2.5 mm.

= 56.

= 58.