Flora of North America species comparison

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

20–150 cm.

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 or brown;

sheaths of proximal leaves glabrous, fronts with indistinct spots, veinless, apex U-shaped;

blades usually amphi-stomic, papillose on both surfaces.

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 longer than inflorescence.

erect;

proximal 2–6 spikes pistillate;

terminal (1–)2–4 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, veinless, somewhat flattened, loosely enclosing achenes, ellipsoid or obovoid, dull, apex obtuse or acute, papillose.

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

not constricted, glossy.

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 red-brown to purple-brown, apex obtuse or acute, 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.

= 72–80.