Flora of North America species comparison

35–100 cm, angles glabrous or scabrous.

20–150 cm.

basal sheaths leafless, usually red-brown;

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

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.

peduncle of proximal spike not more than 4 cm;

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

proximal bract longer than inflorescence.

erect;

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

terminal 1–3 spikes staminate.

erect;

proximal 2–6 spikes pistillate;

terminal (1–)2–4 spikes staminate.

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.

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

not constricted, glossy.

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

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

= 76, 77.

= 72–80.