Flora of North America species comparison

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

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

10–35 cm.

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

sheath adaxially white-hyaline, summits U-shaped;

distal ligules 0.9–2 mm;

blades 2–4(–5) per fertile culm, occasionally folded, 6–20 cm × (0.5–)1–2(–2.5) mm, if not folded, margins revolute.

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.

dense or open, gold to dark brown, 1.7–3 cm × 11–18 mm;

proximal internode 4–8.6 mm; 2d internode 1.5–3.5 mm;

proximal bracts usually scalelike or bristlelike, occasionally leaflike, shorter than inflorescences.

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.

3–6, distant to loosely aggregated, distinct or individually indistinct, broadly ovoid, 10–15 × 7–9 mm, base acute to attenuate, apex rounded.

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.

ascending to spreading, gold to coppery; conspicuously 3–11-veined abaxially, conspicuously 0–13-veined adaxially, broadly ovate, usually flat, 4.3–6.3 × 2–3 mm, 0.25–0.5 mm thick, margin flat, including wing 0.4–0.9 mm wide, edge often minutely crinkled;

beak red-brown or brown, usually white-hyaline at tip, cylindric, unwinged, ± entire for (0.3–)0.5–0.9 mm, ciliate-serrulate at least on distal body, abaxial suture inconspicuous or with conspicuous white margin, distance from beak tip to achene (1.9–)2.2–3.7 mm.

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

elliptic, 1.5–2.1 × 0.75–1.1(–1.3) mm, 0.25–0.5 mm thick.

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.

1.2–2.5 mm.

long-persistent.

3.

scales gold or reddish to dark brown, with pale midstripe, lanceolate to ovate, 3.5–4.8 mm, usually shorter than and 1/3–1/2 width of perigynia, margin white, 0–0.2 mm wide, apex obtuse to acuminate.