Flora of North America species comparison

brownish at base, 30–90 cm.

13–50 cm, scabrous distally;

bases (remnants of old leaves) weakly to strongly fibrous.

sheaths glabrous;

ligules 11–43(–53) mm;

blades dark green, 10–40 cm × 4–8(–12) mm, those of prominent sterile shoots to 18 mm wide, prominently scabrous on adaxial surface.

blades green, 0.7–4.5 mm wide, herbaceous, smooth to scabrous abaxially, smooth to scabrous adaxially.

with both staminate and pistillate spikes;

peduncles of staminate spikes (0.8–)2.5–20 mm;

proximal cauline bracts leaflike, green or reddish brown, shorter than inflorescences.

4–7(–9), oblong to short-cylindric;

proximal spikes long-peduncled (occasionally branched), the distal progressively less so or subsessile; pistillate spikes closely 10–160-flowered (70–230-flowered if branched), 1–5.5(–7) cm × 5.5–8(–9) mm; staminate spike 1.5–5 cm.

proximal pistillate spikes 1–3(–4) (basal spikes 0, rarely 1);

cauline spikes overlapping or somewhat separated, with (2–)5–15 perigynia; staminate spikes 8–30 × 1.3–4.1 mm.

olive-green, 2-ribbed, strongly 6–8-veined, obovoid, 3.4–4.5 mm, minutely scabrous-puberulent;

beak 1.3–1.9 mm, orifice obscurely bidentate.

yellowish green to pale brown or olive, veinless, obovoid, 2.8–4.6 × 1.5–2.2 mm, as long as wide;

beak straight, pale green, occasionally with reddish tinge, 0.4–1.3 mm, weakly ciliate-serrulate, apical teeth 0.1–0.7 mm.

obovoid, 1.8–2.3 × 1.2–1.5 mm.

dark brown, obovoid to globose, obtusely trigonous in cross section, (1.4–)1.6–2.5 × 1.5–2.2 mm.

scales nearly equaling bodies of perigynia, apex acute, acuminate, or short-awned, ciliolate.

pistillate scales pale brown to dark reddish brown or purplish brown, narrow white margins, elliptic to ovate, 2.6–5.4 × 1.2–2.6 mm, equaling perigynia, apex acute to acuminate or short-awned (rarely obtuse); staminate scales with white margins 0.4–0.8 mm wide, lanceolate to obovate, 3.6–6.7 × 1.2–1.7 mm apex obtuse to long-acuminate.

(1.5–)2–3.8 mm.

3.

= 54.