Flora of North America species comparison

0.8–1.9 mm thick, shoots often arising 2–several per cluster, many nodes without shoots.

erect, not stiff, 15–90 cm.

bluntly trigonous, (8–)15–40 cm, smooth-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 pale to dark brown;

sheaths with hyaline inner band, apex not prolonged, glabrous;

ligules 0–2.8 mm;

blades 1–3(–3.5) mm wide.

2–15 cm × 5–10 mm;

proximal bracts shorter than to exceeding spikes;

distal bracts usually scalelike.

dense, headlike, 1.2–3.5(–4.5) cm, 1/2+ as wide as long (if pistillate);

spikes 6–20(–25), usually unisexual;

staminate spikes lanceoloid;

pistillate spikes ovoid.

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.

brown, essentially veinless, usually stipitate, ovate to broadly elliptic, ± plano-convex, (3–)3.5–4.2(–4.8) × 1.2–2.1 mm, dull;

beak (0.9–)1.2–1.9 mm, apex hyaline, friable, oblique or obscurely bidentulate.

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

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 pale brown to ± whitish hyaline, hyaline margins, lanceolate to ovate, (4.3–)4.7–7.5 mm, apex acute to acuminate, satiny to ± dull.

(2.5–)2.8–3.9 mm, apiculus bristly (30X).

= 56.