Flora of North America species comparison

phyllopodic, with dead leaf remains at base, 5–35 cm.

straight, 10–50 cm, tallest ones 25–50 cm.

blades 1–2.5 mm wide, margins sometimes involute, scabrid at tip.

of flowering stems usually shorter than culms, 5–20 cm × 1.5–2.9 mm;

ligules on distal cauline leaves truncate or rounded.

proximal bracts 0.5-2 cm, much shorter than inflorescences;

lateral spikes 6–15 × 3.5–5 mm, with 2–10 perigynia;

terminal spikes 6–20 × 1–2.5 mm.

peduncles of terminal staminate spikes 0.5–8 mm, 0.2–0.5 length of staminate spikes;

bracts to 20 cm × 1.1–2.9 mm, 1.5–4 times as long as inflorescences;

inner band of sheaths concave or truncate.

proximal pistillate spikes (1–)2–5, approximate, subsessile or short-pedunculate, globose to elliptic, 8.5–19.9 × 4.1–9.8 mm;

terminal staminate spikes pedunculate, 12–21 × 1.3–2.7 mm.

2.5–4.5 × 1.6–2 mm, apex rounded;

beak absent.

reflexed, yellowish green, 3.5–4.8 × 1.1–1.7 mm, apex gradually narrowed;

beak 1.4–2.5 mm, forming an angle of 13–48° with body, smooth.

1.2–1.5 × 1–1.2 mm.

scales circular-ovate, 3–4.8 × 2.2–3.4 mm, long as and wider than perigynia, apex obtuse, sometimes mucronate.

scales oblanceolate to obovate, 3.2–4.8 × 1.5–2 mm, apex acute to obtuse.

2–2.5 mm.

1.1–2.9 mm.

pistillate scales yellowish green, inconspicuous among perigynia, 1.7–2.6 × 0.8–1.2 mm; staminate scales yellowish green, ovate, 2.9–4.4 × 0.8–1.6 mm, apex obtuse or acute to acuminate.

= 52.

= 64.