Flora of North America species comparison

brownish at base, 30–90 cm.

14–89(–101) cm × 0.3–1.1 mm wide, smooth or papillose.

sheaths glabrous;

ligules 11–43(–53) mm;

blades dark green, 10–40 cm × 4–8(–12) mm, those of prominent sterile shoots to 18 mm wide, prominently scabrous on adaxial surface.

ligule on distal leaf 0.9–2.2 mm, as long as wide;

blades 0.6–4.2 mm wide, widest blade 2.4–4.2 mm wide.

12–56 mm;

proximal internode 6–34 mm;

proximal bracts 6–49 mm, awn 7–46 mm;

spikes (2–)3–5, longest ones 2–5, usually gynecandrous;

proximal spikes with 1–2 staminate and (5–)7–12 pistillate flowers, 5.2–11(–13) × (2.1–)3.7–6.9 mm;

terminal spikes usually with 1–3(–5) staminate and (7–)9–13(–16) pistillate flowers, 6.8–13 × 3.8–8.1 mm.

4–7(–9), oblong to short-cylindric;

proximal spikes long-peduncled (occasionally branched), the distal progressively less so or subsessile; pistillate spikes closely 10–160-flowered (70–230-flowered if branched), 1–5.5(–7) cm × 5.5–8(–9) mm; staminate spike 1.5–5 cm.

olive-green, 2-ribbed, strongly 6–8-veined, obovoid, 3.4–4.5 mm, minutely scabrous-puberulent;

beak 1.3–1.9 mm, orifice obscurely bidentate.

erect to ascending, green to pale brown, 0–5-veined abaxially, usually veinless adaxially, narrowly ovate, 4–4.9(–5.2) × 1.3–1.5(–1.6) mm, 2.9–3.8 times as long as wide, apex gradually tapering;

beak 1.4–2.1 mm, 0.32–0.4 times as long as perigynia, margins serrulate, apex entire or bidentulate, teeth to 0.2 mm, 0–0.05 times as long as perigynia.

obovoid, 1.8–2.3 × 1.2–1.5 mm.

1.8–2.2 × 1.2–1.5 mm wide, 1.3–1.8 times as long as wide.

scales nearly equaling bodies of perigynia, apex acute, acuminate, or short-awned, ciliolate.

scales with colorless or stramineous margins, 3–4.5 × 1.6–2.2 mm, body 2.8–4.2 mm, apex acuminate to short-awned, awn to 0.6 mm.

scales with colorless or stramineous margins, 3–5.3 × 1.2–1.6 mm, apex acute to acuminate or occasionally short-awned to 0.3 mm.

(1.8–)1.9–2.2 mm.

1.9–2 mm.

= 54.