Flora of North America species comparison

2–4.5 cm.

2–85 cm.

of flowering stems thickened, recurved, shorter to equaling culms, to 3 cm × 1.6–3.5 mm ligules of distal cauline leaves usually obsolete.

of flowering stems much shorter than culms, to 19 cm × 1–5.4 mm;

ligules of distal cauline leaves truncate or rounded.

proximal pistillate spikes 1–3, contiguous or slightly separate, globose or elliptic, 4–5.5 mm wide;

terminal staminate spikes short- or long-pedunculate, 5.1–6.1 × 1.6–2.1 mm.

peduncles of terminal staminate spikes to 25 mm;

proximal pistillate spikes 1–4, 5.4–11 mm wide;

terminal staminate spikes 5.1–25.3 × 1.3–3.6 mm.

dark green to yellowish green, 2.3–2.8 × 1.3–1.5 mm, apex abruptly narrowed into a scabrous or smooth, reflexed beak;

beak 0.4–2.1 mm, forming an angle of 5–28° with body.

(2.7–)3.2–4.5 × 1–2 mm;

beak forming an angle of (5–)15–40(–58)° with body.

1.2–1.4 × 0.9–1 mm.

1.2–1.8 × 0.9–1.4 mm.