Flora of North America species comparison

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

acutely angled, 10–110 cm, scabrous.

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.

basal sheaths red-brown;

sheaths of proximal leaves glabrous, fronts lacking spots and veins, apex truncate;

blades epistomic, 2–4.5 mm wide, adaxially papillose.

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.

proximal bract subequal to inflorescence, 1.5–4 mm wide.

erect;

proximal 2–3 spikes pistillate, 1.2–4.2 cm × 3–5 mm, base obtuse or acute;

terminal 1–2 spikes staminate.

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.

ascending, pale brown with red-brown or black spots on apical 1/2, occasionally black on apical 1/2, 3–9-veined on each face, somewhat flattened, tightly enclosing achenes, stipitate, ellipsoid or obovoid, 2–3.7 × 1.1–2.1 mm, somewhat leathery, dull, base truncate, distended, apex obtuse or rounded, papillose;

stipe 0.1–0.3 mm;

beak red-brown or black, 0.1–0.2 mm, orifice scabrous.

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

not constricted, whitish iridescent, base adnate to perigynium.

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 dark purple-brown or black, shorter than perigynia, apex obtuse, awnless.

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.

= 83, 84, 85.