Flora of North America species comparison

20–150 cm.

35–100 cm, angles glabrous or scabrous.

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.

basal sheaths leafless, usually red-brown;

blades amphistomic, 5–8 mm wide, papillose on both surfaces.

proximal bract longer than inflorescence.

peduncle of proximal spike not more than 4 cm;

proximal bract longer than inflorescence, 4–8 mm wide.

erect;

proximal 2–6 spikes pistillate;

terminal (1–)2–4 spikes staminate.

erect;

proximal 2–6 spikes pistillate, 4–6 cm × 4–7 mm, base cuneate or attenuate;

terminal 1–3 spikes staminate.

ascending, veinless, somewhat flattened, loosely enclosing achenes, ellipsoid or obovoid, dull, apex obtuse or acute, papillose.

pale brown, veinless, obovoid, 2.6–3.2 × 1.5–2.2 mm, apex rounded;

beak pale brown, thickened, not more than 0.2 mm.

not constricted, glossy.

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

scales pale red-brown with narrow red-brown marginand broad pale midvein.

= 72–80.

= 76, 77.