Flora of North America species comparison

angled, 25–75 cm, glabrous.

10–45 cm, smooth to scabrous distally;

bases (remnants of old leaves) slightly or not at all fibrous.

basal sheaths red-brown;

sheaths of proximal leaves glabrous, fronts lacking spots and veins, entire, apex truncate;

blades 3–5 mm wide.

blades pale to bright green, shorter to longer than culms, 0.8–2.5 mm wide, herbaceous, smooth to scabrous abaxially, papillose to scabrous adaxially.

proximal bract subequal to inflorescence, 1–3 mm wide.

with both staminate and pistillate spikes;

peduncles of staminate spikes 0.4–9.9 mm;

proximal nonbasal bracts leaflike, shorter than inflorescences.

erect or the proximal pendent;

proximal 3–4 spikes pistillate, usually sessile, 2.5–9 cm × 4–5 mm, base attenuate;

terminal 1–2 spikes staminate.

proximal pistillate spikes 1–4 (basal spikes 0);

cauline spikes overlapping, proximal 2 spikes usually separated by less than 7 mm, with 4–14 perigynia; staminate spikes 5–14 × 0.5–1.8 mm.

divergent, green, veinless, somewhat flattened, tightly enclosing and distended by the achenes, ovoid, 2.3–4.7 × 1.1–1.8 mm, dull, apex acute, glabrous;

beak green, often twisted, 0.1–0.3 mm, orifice oblique.

pale green, veinless, ellipsoid, 2.3–3.3 × 0.8–1.2 mm, longer than wide;

beak straight, pale green, 0.6–1.1 mm, weakly ciliate-serrulate, apical teeth 0.1–0.4 mm.

not constricted, dull.

brown, ellipsoid, acutely trigonous in cross section, 1.2–1.7 × 0.7–1.3 mm.

scales purple-brown to black, shorter than perigynia, apex acute, awnless.

pistillate scales pale to dark reddish brown, with narrow white margins, lanceolate to ovate or obovate, 2.2–3.4 × 0.4–1.8 mm, equaling or exceeding perigynia, apex usually acuminate, sometimes acute or mucronate; staminate scales lanceolate to ovate, 2.8–6 × 0.6–1.9 mm, apex acute to acuminate.

1.5–2.7 mm.

3.

= 66.