Flora of North America species comparison

densely tufted, lateral, ascending or lax to decumbent, distinctly winged, 10–62 cm × 2–2.4 mm;

basal sheath light brown to brown, the proximal frequently wine-red or purple, small, triangular.

arching to spreading, 5–31 cm, smooth or scabrous distally;

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

sheaths 2–15 mm;

blades ascending, midrib well developed, 2 lateral veins conspicuous, slightly more so than other veins, flat, thin, 10–35 cm × 10–38 mm, widest leaf 13–38(–62) mm wide, blades of overwintering leaves smooth.

blades pale green, shorter to longer than culms, 0.9–2.6(–3.2) mm wide, herbaceous, glabrous abaxially, scabrous adaxially.

1.4–2.6 cm × 3.9–2.2(–3.2) mm;

bract blades of distal lateral spikes lanceolate or narrowly lanceolate, wider than spikes, concealing them, widest bract blade of distalmost lateral spike (2.9–)3.2–8.3 mm wide.

peduncles of proximal spikes to 5.8 cm; of terminal spike absent.

with both staminate and pistillate spikes;

peduncles of basal spikes slender, elongate, erect;

peduncles of distal spikes 0.6–4(–10) mm;

proximal nonbasal bracts leaflike, equaling or exceeding inflorescences.

4(–5) per culm;

lateral spikes 6–36 × 3–4.2 mm;

terminal spike erect, linear, 4–18 × 1.2–1.6 mm, often hidden by distal 2 pistillate spikes and distal bract blade, frequently exceeded by distal 2 pistillate bracts.

pistillate spikes 1–4 (basal spikes 0–2);

cauline spikes overlapping, separated by less than 7 mm, with 4–15 perigynia;

distal staminate spikes 3.1–11.3 × 0.7–2.7 mm.

3–20 per spike, strongly to loosely overlapping, erect or ascending, obovate, 3–4.2 × 1.8–2.1 mm;

beak abruptly bent, 0.3–0.6 mm.

yellowish green to grayish green, veinless, globose to obovoid, 2.3–3.1 × 1–1.4 mm, as long as or longer than wide;

beak often bent, pale green, occasionally with reddish brown tinge, 0.4–0.8 mm, ciliate-serrulate, apical teeth 0.1–0.2 mm.

ovoid, 2.5–3.8 × 1.6–1.8 mm.

brown, obovoid, obtusely trigonous in cross section, 1.3–1.6 × 1–1.4 mm.

scales oblong, 2.8–3.2 × 1.4–2 mm, apex obtuse or truncate, awnless (sometimes mucronate).

scales oblong ovate, 2.8–3.2 × 1.4–2 mm, margins hyaline, apex obtuse.

2–2.2 mm.

1.2–2.5 mm.

pistillate scales pale to dark reddish brown, with narrow to broad white margins, ovate, 2–2.8 × 1–1.8 mm, shorter than perigynia, apex obutse, acute, or acuminate (cuspidate on some basal spikes); staminate scales ovate, 2.4–4 × 1–1.9 mm, apex acute to acuminate.

3.

= 44.