Flora of North America species comparison

solitary or few together, somewhat trigonous, (20–)30–70(–80) cm, stout, to 1.5(–4) mm diam. basally;

basal sheaths persistent, brown to purplish brown, septate-nodulose.

10–60 cm;

basal sheaths brown.

blades filiform, trigonous-channeled, (2–)3–10 cm × 1–2 mm;

distal 1–2 leaf sheaths bladeless, inflated.

bladeless sheaths 1–3 per culm, expanding distally, to 1 mm wide;

blades filiform, trigonous, not more than 1 cm.

involucral bracts absent.

involucral bracts absent.

solitary, erect, globose in fruit, 1.5–2(–4) cm;

scales blackish to purplish brown;

proximal empty scales not more than 7, obovate or trigonous-obovate, 4–20 mm, margins white or paler, as wide as dark portion, apex blunt;

distal scales obovate to ovate-lanceolate, margins hyaline, 1 mm wide or wider.

solitary, erect, globose-subglobose to ovoid-oblong, 10–20 mm in flower, to 50 mm in fruit;

scales lead-colored to greenish gray with white-hyaline margins to 1 mm wide; empty scales more than 10, ovate-lanceolate;

proximal scales reflexed or spreading at maturity, 5–10 mm.

perianth bristles 10 or more, red-brown to white, 20–40 mm, smooth;

anthers (0.6–)1.5–3 mm.

perianth bristles 10 or more, white, seldom reddish or brown, 10–18 mm, smooth;

anthers 1–3 mm.

oblong-obovoid, 2–2.7 mm, as wide as long, apex apiculate (0.3–0.5 mm).

ovoid to obovoid, 1.9–3.5 mm, apex minutely apiculate.

= 58.

= 58, 60.