Flora of North America species comparison

(10–)20–90 cm × 0.5–0.8(–1.5) mm, scabrous distally.

5–20(–50) cm, smooth or rough distally.

blades trigonous-channeled in cross section, to 45 cm × 1–1.5(–3) mm;

distal leaf blade 3–25 cm × 1–1.5 mm, longer than its (1–)2.5–9 cm sheath.

cauline leaves 0–1, distal leaf usually proximal to mid culm, bladeless or with short blade;

blade forming angle with sheath, filiform or trigonous-channeled, 0.4–1.2 mm wide.

blade-bearing involucral bracts solitary, similar to distal leaf, blade sometimes brown proximally, 0.8–6 cm.

involucral bracts absent or present as short blade on distal leaf.

(1–)2–7, in subumbels, ovoid, 7–10 mm in flower, 20–30 mm in fruit;

peduncles 5–20(–60) mm, scabrous;

scales green to red-brown to almost black, sometimes with green center, ovate-elliptic, 3–4.5 mm, scarious, margins narrow, to 0.2 mm, midrib prominent, fading distally or proximal scale with 2–4 thinner or equally prominent lateral ribs, apex obtuse.

solitary, erect, globose in fruit, 10–20 mm in flower, 15–30 mm in fruit;

scales pale blackish brown, margins and tip hyaline, ovate-lanceolate, thin;

proximal empty scales mostly 10–15, appressed to ascending, ovate, 5–8 mm, ribs ± to margins, midrib not reaching tip, apex acute.

perianth bristles 10 or more, cream, 10–20 mm, smooth;

anthers 1–2 mm.

perianth bristles white to very pale brown;

anthers 0.6–1.2 mm.

narrowly obovoid, 2.5–3 mm.

ellipsoid-obovoid, 1.8–2.1 mm.

= 60.