Flora of North America species comparison

20–60 cm × 0.5–0.8 mm, distally smooth.

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.

blades trigonous-channeled in cross section, to 30 cm × 1–2 mm;

distal leaf blade 1–4 cm × 1–1.5 mm, shorter than its 3.5–5.5 cm sheath.

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

distal 1–2 leaf sheaths bladeless, inflated.

blade-bearing involucral bracts solitary, similar to distal leaf, blade usually gray or black proximally, 0.6–2 cm.

involucral bracts absent.

(1–)2–5, in subumbels, narrowly ovoid, 7–10 mm in flower, 15–25 mm in fruit;

peduncles 5–30 mm, scabrous;

scales black or dark gray with black tip, broadly ovate, 3–4 mm, scarious, margins absent or to 0.1 mm wide, 5–9-ribbed, midrib prominent, usually dilated distally, reaching tip, apex obtuse-subacute.

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.

perianth bristles 10 or more, white, 10–15 mm, smooth;

anthers 1–2.5 mm.

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

anthers (0.6–)1.5–3 mm.

narrowly obovoid, 1.5–3 mm.

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

= 58.