Flora of North America species comparison

arcuate or slightly sinuous, 10–35 cm.

2–85 cm.

of flowering stems shorter than to equaling culms, 1.4–4.6 mm wide, 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.

peduncles of terminal staminate spikes (1–)3–28 mm;

proximal pistillate spikes (1–)2–5, approximate, the proximal usually distant and pedunculate, elliptic, 5.3–8.5 mm wide;

terminal staminate spikes pedunculate, 9–23.8 × 1.3–3.3 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 olive to green, (2.7–)3.2–3.8(–4.2) × 1.1–1.7 mm wide, apex gradually contracted into a smooth or slightly scabrous, straight or slightly curved (less than 28°) beak;

beak 0.7–1.7 mm.

(2.7–)3.2–4.5 × 1–2 mm;

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

1.1–1.5 × 0.9–1.2 mm.

1.2–1.8 × 0.9–1.4 mm.