Flora of North America species comparison

lateral, coarse, trigonous, 50–135 cm, smooth or somewhat scabrous-angled distally.

23–88 cm × 0.5–1.6 mm, smooth.

basal sheaths reddish purple, strongly fibrillose, bladeless;

longest ligules 13–40(–56) mm, much longer than wide;

blades glaucous to pale green, M-shaped, (5.5–)8.5–21 mm wide, glabrous.

ligules 1–3.5 mm, 1–3 times as long as wide;

blades 1.1–4.4 mm wide, widest blade 1.3–4.4 mm wide.

17–60 cm;

proximal 2–4 spikes pistillate, ascending to arching;

distal spikes erect;

terminal 3–5(–7) spikes staminate.

(12–)21–63(–71) mm;

proximal internode 3.3–16(–23) mm;

proximal bracts 5–24(–28) mm, awn 1.3–19 mm;

spikes 3–8, usually gynecandrous, sometimes also pistillate, staminate or with pistillate and staminate flowers scattered throughout;

proximal spikes with 0–2 staminate and 9–19 pistillate flowers, 10–17(–20) × 1.8–5 mm;

terminal spikes usually with 0–3 staminate and 8–18 pistillate flowers, 9–20(–25) × 1.5–5 mm.

ascending, usually strongly 14–28-veined, narrowly ovoid to narrowly ellipsoid, (4.5–)5.2–7.8 × 1.6–2.5 mm, glabrous;

beak obscure, 0.5–1.6 mm, bidentulate, teeth straight, 0.2–0.7(–0.9) mm.

erect, green to pale brown, (3–)4–8-veined abaxially, prominently to weakly 3–6-veined adaxially, narrowly lanceolate, (3.3–)4.1–6.7 × 0.8–1.3 mm, (3.5–)4–6.1(–6.6) times as long as wide, apex abruptly contracted or gradually tapering;

beak 1.2–2.2(–2.8) mm, 0.28–0.51 times as long as perigynia, margins serrulate, apex entire or bidentulate, teeth to 0.2 mm, 0–0.05 times as long as perigynia.

1.7–2.2 × 0.7–1.1 mm, 1.9–2.9 times as long as wide.

scales lanceolate to ovate, apex obtuse to acuminate, glabrous, awn 0.3–3.5 mm, ± scabrous.

scales with pale to red-brown margins, 2.8–4.1 × 1.1–1.6 mm, apex acuminate or with awn to 0.6 mm.

scales with pale to red-brown margins, 2.8–3.9 × 1.4–1.6 mm, apex acute to acuminate.

1.7–2.9 mm.

2–3.4 mm.

= 74.