Flora of North America species comparison

trigonous with obtuse angles, 15–75 cm, to 3 mm diam. at base, glabrous.

23–88 cm × 0.5–1.6 mm, smooth.

sheaths to 2.5 cm;

blades 30–35 cm × 5 mm.

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.

10–30 cm;

peduncles of proximal spikes to 4 cm;

bracts 8–15 cm × 3–5 mm, shorter than inflorescences;

lateral spikes 4–5, 6–10-flowered, 1 × 2.5 cm.

(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.

green with red-brown spots, 15–20 raised veins, to 15 × 1.2 mm;

beak obliquely cut, herbaceous, teeth cartilaginous, to 1 mm;

style curved, short stigmas protruding from perigynium at base of oblique orifice.

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.

yellow-brown, oblong, obtusely angled, 3 × 1 mm, tightly enclosed by perigynia, dull.

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

white or translucent with green midvein, ovate, body to 2.5 mm, less than 0.5 length of perigynia, herbaceous, apex acute, acuminate or mucronate, awn to 0.5 mm.

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.